[Elecraft] K3+KPA500+KAT500 RFI Revisited
Dear Elecraft aficionados: The symptom is KPA switching bands during Tx. Seems like a while ago I was troubleshooting the RFI problem between the equipment. K3 + KPA500 + KAT500 Using the "enhanced" configuration where serial cable between the K3 to KAT to KPA assisted in communicating band changes as well as key-down event and so on. I own two KPA-500's. Both are less than 6mo old. Let me refer to them as KPA-1 and KPA-2. KPA-1 is in the hands of Elecraft for repair. It worked flawlessly (until needing repair), but the RFI issue I will write about did not exist when that KPA-1 was in the chain. KPA-2 was purchased in December as a backup. Since putting KPA-2 in-line, the RFI problems I will describe have gone unresolved. Scenario is with KPA-2 in-line. Even running tiny power (< 10W, <15 W) I can routinely and 100% reproduce the problem where the BCD data in the AUX line that carries the information about which band the KPA should be set on will change during Tx. For example I can put KAT into MAN, put KPA in bypass. Tune the antenna via K3 and witness the search resolve to a 1:1 on the SWR. That sometimes will trigger the effect -- I can see in the KPA, even in bypass that the band the KPA is set on is changed from the band the K3 is set on. Even more insidious is that if the KPA winds up on a different band after the tune (or after "VVV" CW testing after tune), that pressing the band button on the KPA to bring it back does not bring the KPA back to the right band. It is as if the KPA has two states of band-awareness.. The awareness of the band displayed in the LCD and the band that the input is set for. Here's an example: K3 on 40m Tune per usual (KAT MANUAL, KPA Bypass) KPA remains on 40m. K3 power output 14W Then put the KPA into Operate Tap "VVV" out on the key. Witness the KPA operate but then switch band to 30m or 17m or 20m, etc.. (not expected) Then on the KPA tap (Band) 7 (for the 40m band) and nothing happens (not expected) Tap on the KPA 14 then the whole chain switches to 20m (expected) Suppose the TUNE did not yield a band-switch during Tx, repeating the test but this time putting the KPA into Operate after the tune is sure-fire going to cause the bandswitch. (I configured the KPA to go to Bypass in the event of a band-change event in order to have some sense of protection while the key-down test Tx occurs). That's the scenario where after Tx the KPA is out of sync with the K3. Whether or not the KPA is attempting to frequency-count is not evident, the KPA:RADIO setting is "K3" which means leverage the BCD data from the K3 vis-a-vis the KAT path. I can replicate this band-inconsistency at will. I don't think I can safely operate the equipment if the BCD encoded band data is fluctuating during Tx. What would happen if I switched bands (N1MM) and hit the keyer and the KPA got confused on the last Tx? Magic smoke I imagine. Only happened with KPA-2 not KPA-1. But I'm wondering if KPA-1 suffered a catastrophe caused by this scenario and I didn't notice the clicking band-switch because I had not expected it to switch bands during Tx. What have I done to remedy? I think I've tried everything but obviously I have a gap -- otherwise I'd have solved this problem. - New coax between everything. - Shorter or longer coax, different coax (RG-213, 8X, LMR-240, etc..) - Tighter loops (6 -8") when there is excess coax or lazy big loops where there is excess coax. - New connectors/adapters (Yes, Amphenol) - Re-route coax different ways. Avoid this, that and the other, etc.. Permutations of routing. - Move and adjust placement of equipment. KAT near the KPA, KAT away from the KPA, both near or away from the K3, etc.. - Chokes between things. K3 to KPA, KPA to KAT, KAT to antenna system - Non-bleeding chokes, bleeding chokes. - Ferrite on serial cables, more ferrite, insane amounts of ferrite, or zero ferrite - Move the position of serial cables above, below, up, down, left, right. I haven't got to the point of putting little tangerines on altars and burning incense. I'm trying to keep a positive mood while part of me wants to take up the art of Bonsai and raking the sand. Obviously RFI is a likely culprit, but I'll be damned if I can figure out where it is -- or rather why it would be -- affecting this given all of the mitigations attempted. But I'm always a student and looking for things that were/are not obvious at first. I'm almost to the point where I will take away the "enhanced" mode serial data path between the equipment and rely on the analog key-line between them and RF frequency-counter capabilities so that the KAT and the KPA are on the right band when I key-down. I just need to review the docs to make sure I have the KPA and the KAT setup to go "analog" rather than "KPA:RADIO = K3" mode.
Re: [Elecraft] KAT-500 + KPA-500 / SWR Thresholds
This reply is going back in the thread, on purpose because I've settled the matter. The follow on discussion in the other thread was informative (thanks) and I'll store it in a note for the station. TL;DR; Situation is resolved. Bad RF due to crap elbow connector and lack of diligence in ferrite application on AUX serial cabling. -- Gory Details: Some background that I apologize for not mentioning (and wasting your time - very sorry). But, I didn't know at the time of the original question post. When I was testing *after* the post, I went to the KPA and flipped the display to show TEMP. So when I repeated the experiment (even into a dummy load), I heard the clicks as before, but when I glanced at the LCD panel of the KPA I noticed that the Frequency was bouncing around. (14 Mhz then 18Mhz then back to 14Mhz and then show the TEMP again). I thought, "why on earth is the KPA trying to use a different frequency??" That triggered some evaluation of an earlier email (name withheld) that mentioned RF in the shack. I dug through the parts bin and got a handful of snap-on ferrite and loaded up the AUX Cables on the ends.. Tons of ferrite. OK so then I re-ran the test. Same result but slightly better. Not as much relay chatter. Then I began to wonder about the RF again. I decided to move some equipment. I moved the KPA from the top of the KAT and placed it nearby but not as it was before. Re-routed the coax and so on and re-tested. But this time not as pervasive. Some relay chatter, but less clicking (and less band-switching in the KPA). OK, so we're getting somewhere... Then I took a real good look at the coax. Sure enough those Amphenol elbow connectors were not what I thought they were. Upon closer inspection I realized they were (let us just say) not what I wanted. I swapped them out and lo and behold the problem was gone. No amount of CW into the Dummy Load would trigger the click (ie., the "band switch" clicking). It was the band-switch relay that was clicking after all. Not the Bypass to MAN and vice versa... I was too proud to notice that I had a couple of connectors that were not the prime quality. And too proud to realize I hadn't really applied as much ferrite where it needed to be. I am really sorry to spin up so many great minds to think about this. Lesson learned. Really make sure RF(I) is eliminated. Really. Eliminated. Now, to whom should I send a complementary coffee gift card with the essential fix... Thanks very much. I return you now to the list for more important issues. Thanks. --- 73, Jeff W7BRS https://blog.w7brs.com On Monday, January 1st, 2024 at 1:31 PM, Jeff Wandling wrote: > W7BRS> comments in-line below. > > > > > --- > 73, Jeff W7BRS > https://blog.w7brs.com > > > > On Monday, January 1st, 2024 at 1:21 PM, Andy Durbin a.dur...@msn.com wrote: > > > > > "Actual Results: The ATU-500 clicks between Bypass and MAN (by "clicks", I > > mean only what I can infer from the behavior -- it is as if the ATU-500 is > > either using the memory-based ATU settings of the previously tuned settings > > and switching between that and what seems like a Bypass mode) -- the > > clicking is rapid and persistent at the onset of the CW message." > > > > How does your KAT500 know what frequency to use? Does it have a serial data > > interface or does it depend only on the internal RF counter? > > > W7BRS> AUX cable between K3 to KAT-500 and KAT-500 to KPA-500. They are in > serial communication per Elecraft protcol(s), whatever those are. > > > What KAT500 mode (AUTO, MAN, BYP) is selected when you observe this anomaly? > > > W7BRS> Per manual for KAT-500/KPA-500 the stated "nominal" mode is MAN. So I > leave the KAT-500 in MAN after tuning the antenna to 1.1. > > > I ask these questions because I doubt the problem has anything to do with > > SWR thresholds. > > > W7BRS> Interesting. I am only guessing that the excessive clicking in the > KAT-500 was the KAT-500 going in/out of BYPASS. (This isn't the clicking > associated with the Tune-search for L/C. It's a different kind of click. I > don't know how else to describe it other than a single kind of click as if it > was a single relay in operation in the KAT-500 -- that same kind of 'click' > sound that would occur if you switched between MAN and BYPASS on the KAT-500. > Same sound. But that's not definitive enough I suppose. I don't have any > Serial Log data from the Utility to base that guess. > > > W7BRS> Thanks for the questions. I've got a few other replies to sort through > with other suggestions: > > > 1. Try dum
Re: [Elecraft] KAT-500 + KPA-500 / SWR Thresholds
Thanks. That's good detail. I'll recheck the manual once more. I made a common mistake of assuming too much and not reading enough. I have tremendous respect and faith in the engineering put into the system of the Elecraft line.. That's a long way of saying, It works brilliantly. I just want to avoid a mistake in where the ATU-500 and KPA-500 are trying to resolve a tune whilst the CW spews forth. This comment and the prior comment about the Kenwood aspect (and related command-set mentioned) are interesting. Thanks. Aside from all that -- when folks here use the "SWR Thresholds" and use the K3+KAT+KPA chain via Aux Serial data sharing -- what do you use for the three metrics in SWR Thresholds? There's a KPA Inhibit SWR, Re-tune SWR and Bypass SWR value. The recommended values in the manuals seem frightfully high for my nerves to handle. Any advice on *that* would be welcomed. HNY, Thanks. --- 73, Jeff W7BRS https://blog.w7brs.com On Monday, January 1st, 2024 at 4:37 PM, G4GNX wrote: > AFAICR the manual says that if an AUX cable is connected between the KAT500 > and the radio, the KAT500 will follow any frequency/band change and if a > tuning solution has already been stored for that frequency/band it will be > employed before the radio goes into TX. In other words, whilst the radio is > still in RX mode. > > However, elsewhere in the manual it says that when the KAT500 receives RF, it > will also pickup the nearest tuning solution, which is a fail-safe action in > case the KAT500 does not receive data from the radio, for any reason. > > This is only if the radio is a K3, K3S or K4 and if a KPA500 is in use, RF > from it is sent to the KAT500 but the AUX cable must be connected AFTER the > KAT500. i.e. K3———KAT500———KPA500. > > I make no comment about using the KAT500 with a Kenwood (or other) rig. > > 73, > Alan - G4GNX > South Coast UK > Elecraft K4D / KPA500 / KAT500 / IC-9700 > > > > > On 1 Jan 2024, at 21:56, Andy Durbin a.dur...@msn.com wrote: > > > > "> How does your KAT500 know what frequency to use? Does it have a serial > > data interface or does it depend only on the internal RF counter? > > > > W7BRS> AUX cable between K3 to KAT-500 and KAT-500 to KPA-500. They are in > > serial communication per Elecraft protcol(s), whatever those are. > > > > > What KAT500 mode (AUTO, MAN, BYP) is selected when you observe this > > > anomaly? > > > > W7BRS> Per manual for KAT-500/KPA-500 the stated "nominal" mode is MAN. So > > I leave the KAT-500 in MAN after tuning the antenna to 1.1." > > > > Your problem sounded a bit like the conflict between serial data frequency > > and RF count when operating near a "bin" boundary. However, my only > > experience with that problem is with Kenwood rigs using serial data to > > provide frequency to KAT500. I have no experience with AUXBus. > > > > For Kenwood owners one solution was to use the FDT command to desensitize > > the RF counter so serial data frequency always had priority. The command > > description implies it is equally applicable to AUXBus so may be worth > > experimenting. > > > > "FDT Frequency Counter Distance for Retune > > GET format: FDT; > > SET/RESPONSE format: FDT nn; where nn is the distance, in kHz, between the > > current ATU frequency and the most recent TX frequency count for the ATU to > > change ATU settings to the new frequency. The value is between 0 > > (interpreted as the default of 10 kHz) thru 65535, which disables ATU > > tuning based on frequency count. This is intended for customers that prefer > > the KAT500 only follow the frequency provided by a serial port command or > > the K3/K3S/K4 AUXBUS, or select a minimum distance between current ATU > > frequency and a newly counted frequency. > > FDT was introduced in firmware version 01.99." > > > > Andy, k3wyc > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to j...@w7brs.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT-500 + KPA-500 / SWR Thresholds
W7BRS> comments in-line below. --- 73, Jeff W7BRS https://blog.w7brs.com On Monday, January 1st, 2024 at 1:21 PM, Andy Durbin wrote: > "Actual Results: The ATU-500 clicks between Bypass and MAN (by "clicks", I > mean only what I can infer from the behavior -- it is as if the ATU-500 is > either using the memory-based ATU settings of the previously tuned settings > and switching between that and what seems like a Bypass mode) -- the clicking > is rapid and persistent at the onset of the CW message." > > How does your KAT500 know what frequency to use? Does it have a serial data > interface or does it depend only on the internal RF counter? > W7BRS> AUX cable between K3 to KAT-500 and KAT-500 to KPA-500. They are in serial communication per Elecraft protcol(s), whatever those are. > What KAT500 mode (AUTO, MAN, BYP) is selected when you observe this anomaly? W7BRS> Per manual for KAT-500/KPA-500 the stated "nominal" mode is MAN. So I leave the KAT-500 in MAN *after* tuning the antenna to 1.1. > > I ask these questions because I doubt the problem has anything to do with SWR > thresholds. > W7BRS> Interesting. I am only guessing that the excessive clicking in the KAT-500 was the KAT-500 going in/out of BYPASS. (This isn't the clicking associated with the Tune-search for L/C. It's a different kind of click. I don't know how else to describe it other than a single kind of click as if it was a single relay in operation in the KAT-500 -- that same kind of 'click' sound that would occur if you switched between MAN and BYPASS on the KAT-500. Same sound. But that's not definitive enough I suppose. I don't have any Serial Log data from the Utility to base that guess. W7BRS> Thanks for the questions. I've got a few other replies to sort through with other suggestions: 1. Try dummy load vs. real antenna 2. Carefully listen if clicks are syncopated with CW (they aren't but I can listen again to make sure). 3. RF/RFI - Not likely except that Serial AUX cable might be picking up some RF.. I could attach some ferrite cores around it to rule out. Otherwise the shack is weighted down with ferrite in all the right places -- Everywhere. /hi/ W7BRS> Thanks again for the questions, very good. > Andy, k3wyc > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to j...@w7brs.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KAT-500 + KPA-500 / SWR Thresholds
Scenario: K3 + KAT-500 + KPA-500 All with latest firmware as of 1/1/2024 Prerequisites: K3 ATU in Bypass. Loop (wire) antenna tuned via KAT-500 "MAN" to 1.1 SWR. Leave the KAT-500 in MAN not AUTO. Goal: To observe the KAT-500 and KPA-500 remain in a MAN (manual) tune configuration without attempting to switch between BYPASS/MAN or BYPASS/AUTO as long as the SWR Thresholds are satisfied. Stimulus: Operate the K3 in CW. As in a contest (CQ CALL or {EXCH} etc..) Observations made: Observed that the SWR on the KPA-500 is at the lowest value in the LED-file (from left to right, left most LED is illuminated on the SWR meter) Observed that the KAT-500 SWR LED meter only intermittently illuminates the left-most (lowest) SWR indicator during CW transmission.. Expected Results: The ATU-500 will not switch between bypass to memory based ATU settings. Actual Results: The ATU-500 clicks between Bypass and MAN (by "clicks", I mean only what I can infer from the behavior -- it is as if the ATU-500 is either using the memory-based ATU settings of the previously tuned settings and switching between that and what seems like a Bypass mode) -- the clicking is rapid and persistent at the onset of the CW message. During CW transmission, at no time did the SWR in the KPA-500 SWR meter exceed the left-most LED indicator and at no time did the KAT-500 SWR meter indicate an SWR exceeding the left most (lowest) SWR indicator Questions: I am wondering -- is it a matter of difficult settings in the SWR Threshold? I've perhaps chosen values that are causing this switch (clicking) to occur? The impact is that when it is 'clicking' the power output to the amplifier subsides for a fraction of a second -- and I can only guess that the actual signal is effected while the KPA-500 and KAT-500 sort out what the tuner settings ought to be -- in real-time. What I'd like to know is -- if I manually tune the antenna with the KAT-500 and leave it in "MAN" mode on the KAT-500 that the amplifier is NOT inhibited unless the SWR exceeds a limit, but otherwise do not allow the KAT-500 to signal the KPA to inhibit otherwise? Is that what is going on? The click into Bypass and out of Bypass an edge case of the SWR Threshold handling ? I've set the SWR Thresholds as follows: Inhibit the KPA-500 if the SWR exceeds 1.6 SWR (act of paranoia to prevent the KPA-500 to ever attempt to operate if the SWR is 1.6 or higher) Force auto-tune if it exceeds 1.5 SWR Bypass the KAT-500 if the SWR is below 1.1 By this setting, I am guessing that if the SWR during transmission (operation) is above 1.1 and below 1.6 the KAT-500 will not a) Inhibit and b) not cause Auto-Tune. And it also means to me that only if the SWR is below 1.1 (never happens) that the KAT-500 will drop out of a MAN/AUTO mode and go into BYPASS (I chose 1.1 specifically to prevent the drop into BYPASS -- an unattainable SWR of 1.0) Perhaps I'm doing it wrong. What kind of SWR Thresholds does Elecraft recommend to literally prevent: - The KAT-500 to drop into Bypass if the MAN setting is in force? - Quell any attempt to do "Tune" while in MAN if the SWR is below X and above Y SWR. - Inhibit the KPA-500 if the SWR exceeds Z SWR. For arbitrary X, Y and Z SWR levels. Thanks. Ping directly if you need additional information. HNY --- 73, Jeff W7BRS https://blog.w7brs.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT-500 Utility / Unable to Edit Config
Yep. It seems there was a regression. Update: I got a patched version from Dick K6KR last night to try. It worked. I expect that the software will spin to a new version, probably. Don't know their release schedule. But, good find Andy. Thanks. All is well now -- the Edit Config will persist changes and the UI does not lock out the functions as described. --- 73, Jeff W7BRS https://blog.w7brs.com On Thursday, December 28th, 2023 at 9:25 AM, Andy Durbin wrote: > I was running ver 1.21.10.8 and the edit threshold function appears to work > correctly. > > I installed 1.23.9.8 and found all thresholds were blank (current values not > displayed) and could not be edited. > > Utility ver 1.23.9.8 seems to be broken. I suggest running 1.21.10.8. Email > me if you don't have it available. > > 73, > Andy, k3wyc > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to j...@w7brs.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KAT-500 Utility / Unable to Edit Config
Goal: Adjust the KAT-500 Configuration so that the SWR Thresholds are set as follows: The amplifier (KPA-500 in this case) is inhibited unless the SWR is better than 1.4. Force the Auto-tune if the SWR is worse than 1.8 Bypass if the SWR is better than 1.2 Attempts (repo-cases) Below are two repo-case scenarios. The first case is an attempt to Edit the Config for the KAT-500 with the Utility. The second case is a nominal test of entering and exiting the Edit Config feature. Both seem to yield strange results where the Edit Config feature does not commit the changes and further the UI appears to not present a mode that lets me re-enter the Edit Config phase unless I re-assert the Port connection. First Repo-case: Rig is K3/100 S/N 4xxx, patched fully to latest Firmware. Host system: Windows 10, latest patches, etc.. Install KAT-500 Utility version 1.23.9.8 Reboot PC Launch KAT-500 Utility (Firmware is 02.05 installed on KAT-500 from Factory) Select tab Port Test Communications See dialog window confirming connection to COM port and baud-rate OK. Select tab Configuration Select Edit Configuration Select tab "SWR Thresholds" Select radio button "ALL" for band. Enter 1.8 for Autotune (per manual page 30) Enter 1.2 for Bypass (per manual page 30) Press OK Witness Dialog window for Edit Configuration disposed. Main window of application -- All buttons (Edit, Save, Restore, Display Fault, Erase Memories, Reset) all greyed out. Cannot be chosen. Then -- Select tab "Port" Dialog window confirming connection to COM port and baud-rate OK Select tab "Configuration" All buttons (Edit, Save, Restore, Display Fault, Erase Memories, Reset) now functional. Select "Edit Configuration" Select tab SWR Thresholds Witness radio button selected ALL for Band Witness ALL SWR Thresholds empty - no values present. Result: The settings are not preserved nor is the Edit Configuration session committed after using "OK" in that panel to set the SWR Thresholds. Second repo-case: Same setup - same version of KAT-500 Utility. Reboot PC Run KAT-500 Select Port tab Witness confirmation of Communication OK Select tab Configuration Select Edit Configuration Select Cancel (do not edit any configuration) Witness all buttons greyed out (Edit Configuration, Save, Restore, Display, etc..) non-functional. Result: The panel rendered under the Configuration tab holds buttons (Edit, Save, Restore, Display, etc..0 that are greyed out UNLESS and UNTIL I re-assert the Port connection. Attempted fixes: - Reboot PC. Attempt to Edit Config, Same result. - Power cycle KAT, KPA, K3. Attempt to Edit Config, Same result. - Save Configuration and Restore Configuration Succeed. Then attempt to edit - same Result. Windows enumerates the KAT and KPA serial interfaces normally. I am not required to run as Adminstrator to exercise the KAT-500 Utility. All of the other features of KAT-500 Utility seem to work -- Firmware tab, Operate tab, Port tab. Command Tester tab works (sent the SN; command for serial number, succeeded). --- 73, Jeff W7BRS https://blog.w7brs.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] WTB: Elecraft K1 Tilt Stand
A long-shot I know, but I'm looking for a KTS1 wide-range tilt stand for an Elecraft K1. Will probably have to find some aftermarket substitute, but thought I'd ask for the real thing first. Thanks! -- Jeff, KE9V __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Elecraft Digest, Vol 231, Issue 2
Yep that seems to work. Yet when I plug the usb back Up, one of the programs keys the radio transmitter. I turn the radio off and then back On to use one of these programs. Both programs are using the same Com Port. Jeff Sent from my iPhone > On Jul 3, 2023, at 2:36 PM, elecraft-requ...@mailman.qth.net wrote: > > Send Elecraft mailing list submissions to >elecraft@mailman.qth.net > > To subscribe or unsubscribe via the World Wide Web, visit >http://mailman.qth.net/mailman/listinfo/elecraft > or, via email, send a message with subject or body 'help' to >elecraft-requ...@mailman.qth.net > > You can reach the person managing the list at >elecraft-ow...@mailman.qth.net > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Elecraft digest..." > > > Today's Topics: > > 1. Elecraft CW Net Announcement (kevin) > 2. Err 70 PTT low power (Jeff Drew) > 3. Re: KXPA100 (Gerry leary) > 4. Re: Err 70 PTT low power (Christian Friess) > 5. Re: K2/10 (Michael Carter) > 6. K2: Filter Aliginment software for Apple MACs. > (Francis Cummings, III) > 7. Re: K4 Rx is awesome... (George Thornton) > 8. Re: Err 70 PTT low power (Jim Brown) > 9. Re: K4 Rx is awesome... (David Gilbert) > 10. "SOLD"..FOR SALE.K2/10 (KJ) > 11. Elecraft CW Net Report (kevin) > 12. Re: Elecraft CW Net Report (Brian Hunt) > 13. K3 Receive gone (Jim Rhodes) > 14. Re: K3 Receive gone (Michael Carter) > 15. Re: K3 Receive gone (George Fremin III) > 16. Re: K2: Filter Aliginment software for Apple MACs. > (Alan D. Wilcox) > 17. Re: K2: Filter Aliginment software for Apple MACs. > (Walter Underwood) > 18. Re: K2: Filter Aliginment software for Apple MACs. > (John Magliacane) > 19. For Sale K3 DX/Contesting Transceiver an accessories > (David Needham) > 20. Fwd: For Sale K3 DX/Contesting Transceiver andaccessories > (David Needham) > 21. July K4/K4D plus KPA1500 and KPA500 Amplifier Specials -More > Details (Eric Swartz) > > > -- > > Message: 1 > Date: Sat, 1 Jul 2023 20:42:37 -0700 > From: kevin > To: Elecraft Reflector > Subject: [Elecraft] Elecraft CW Net Announcement > Message-ID: <6d26692c-bebd-5e35-7486-3c0c14255...@coho.net> > Content-Type: text/plain; charset=UTF-8; format=flowed > > Good Evening, > > ?? Sun, with a little rain, has made the forest green.? It smells > great.? More new birds arrived.? The young Gray jays have learned to > fly.? I noticed them falling onto the roof until they gained control.? > Now they have joined the flock flying around. > > ?? The sun has a very large sunspot group.? There was a glancing CME > earlier today.? Solar activity is a little lower at the moment.? Good > propagation with only summer storms to contend could happen.? A > thunderstorm would clear the skies and cool things down.? I'm sure Texas > would enjoy a cool front. > > > Please join us on (or near): > > 14050 kHz at 2200z Sunday (3 PM PDT Sunday) > ?7047 kHz at z Monday (5 PM PDT Sunday) > > ?? 73, > ? Kevin. KD5ONS > > > > > > > - > > > > > > The Universe is already mad, anything else would be redundant. > > > > > > > -- > > Message: 2 > Date: Sun, 2 Jul 2023 03:38:40 -0500 > From: Jeff Drew > To: elecraft@mailman.qth.net > Subject: [Elecraft] Err 70 PTT low power > Message-ID: > Content-Type: text/plain; charset=us-ascii > > The K4 does one of two things: > > * gets stuck in transmit mode. Remedy: turn off radio. > > * Will not transmit when PTT or > Keyed. Remedy: None > > I changed pistol grip PTT which did not corrrect problem. Need to know the > fix for this problem urgently. > > Jeff > N4JDU > > Sent from my iPhone > > > -- > > Message: 3 > Date: Sun, 2 Jul 2023 08:14:42 -0600 > From: Gerry leary > To: Gary Memory > Cc: Elecraft Reflector > Subject: Re: [Elecraft] KXPA100 > Message-ID: <47b8a28c-0348-4525-86e4-22c2c6ea5...@icloud.com> > Content-Type: text/plain; charset=utf-8 > > I got one when they first came out. It was so much fun that I think I played > with it for two days straight without stopping for anything except necessary > breaks and sleep. > > Gerry Leary Wb6ivf > > On Jul 1, 2023, at 1:37 PM, Gary Memory wrote: > > ?Hey Rob??I ordered it in January. I did the internal tuner as well. This > afternoon I?ve been loa
[Elecraft] Err 70 PTT low power
The K4 does one of two things: * gets stuck in transmit mode. Remedy: turn off radio. * Will not transmit when PTT or Keyed. Remedy: None I changed pistol grip PTT which did not corrrect problem. Need to know the fix for this problem urgently. Jeff N4JDU Sent from my iPhone __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Elecraft Digest K4 order/shipping status
Can someone explain Elecraft's K4 order/shipping status please? I don't understand what "K4 Group 3 orders have been emailed through 4/15/22" means, exactly. I ordered a k4 on July 31st but was never told what "group" I was in. Does this mean I must be in Group 4 because I haven't been emailed at all yet? I suppose that also means my order will be filled after 4/15 at the earlies, too---correct? I just want to have an idea without bugging the nice folks at Elecraft if I don't have to... 73, Jeff, AK5B From: elecraft-boun...@mailman.qth.net on behalf of elecraft-requ...@mailman.qth.net Sent: Saturday, September 24, 2022 5:50 PM To: elecraft@mailman.qth.net Subject: Elecraft Digest, Vol 221, Issue 6 Send Elecraft mailing list submissions to elecraft@mailman.qth.net To subscribe or unsubscribe via the World Wide Web, visit http://mailman.qth.net/mailman/listinfo/elecraft or, via email, send a message with subject or body 'help' to elecraft-requ...@mailman.qth.net You can reach the person managing the list at elecraft-ow...@mailman.qth.net When replying, please edit your Subject line so it is more specific than "Re: Contents of Elecraft digest..." __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Help a Blind guy sell his gear?
I have 2 questions. I happen to be blind and have some great gear I just don’t/can’t use. Used precisely 3 times. First question is where is the best place to list my used Elecraft gear? Also, I’m having trouble learning what is a “fair” price. I don’t want to take advantage of anyone…and I don’t want to give it away either. I need the money to invest in my music gear. Here’s what I have. KX2 w/tuner and clock. AX1 &2. I have the bag for it as well as extra battery and MH3 mic. Additionally I have Chameleon MPAS Lite antenna and a backpack from Chameleon that holds everything, and room for a bunch more. I was thinking $1,500? Is that off? High or Low? Help! Thanks! 73 KO4NE Sent from my iPhone > On Dec 31, 2021, at 6:13 PM, elecraft-requ...@mailman.qth.net wrote: > > Send Elecraft mailing list submissions to >elecraft@mailman.qth.net > > To subscribe or unsubscribe via the World Wide Web, visit >http://mailman.qth.net/mailman/listinfo/elecraft > or, via email, send a message with subject or body 'help' to >elecraft-requ...@mailman.qth.net > > You can reach the person managing the list at >elecraft-ow...@mailman.qth.net > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Elecraft digest..." > > > Today's Topics: > > 1. Re: Report on cheap power supply for K2 (Geert Jan de Groot) > 2. Re: Simulated Stereo (Peter Eijlander (PA0PJE)) > 3. P3 with TXmon and Svga for sale (Ronnie Hull) > 4. Re: I'm Thrilled with my new K4 (Robert Sands) > 5. Re: I'm Thrilled with my new K4 (David Gilbert) > 6. K4D Owner Manual (Sam Sargent) > 7. Re: K4D Owner Manual (George Briggs) > 8. Re: K4D Owner Manual (Thorsten Fricke) > 9. Re: Elecraft E850463 cable (Mike Murray) > 10. Re: I'm Thrilled with my new K4 (Robert Sands) > 11. Re: KAT500 Attenuator (Wes) > 12. TX Gain calibration fails (dl...@gmx.net) > 13. Re: TX Gain calibration fails (William Hammond) > 14. Elecraft P/N 620021 source (Paul Kemp) > 15. KX3 - Low sensitivity on 12M band (Bert) > 16. FS: KRX3A (Nick-VE3EY) > 17. Problem solved - KX3 - Low sensitivity on 12M band (Bert) > 18. Cleaning Solder Flux, Redux (eda...@aya.yale.edu) > 19. Re: [POSSIBLE SPAM] Cleaning Solder Flux, Redux > (Dr. William J. Schmidt) > 20. Re: Output power being eaten (Al Lorona) > 21. Re: Output power being eaten (Jim Brown) > 22. Re: [POSSIBLE SPAM] Cleaning Solder Flux, Redux (Harlan Sherriff) > 23. Need a mentor (Lou Mecseri) > 24. Re: [POSSIBLE SPAM] Cleaning Solder Flux, Redux (Eric Garner) > > > -- > > Message: 1 > Date: Wed, 29 Dec 2021 12:21:36 +0100 > From: Geert Jan de Groot > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] Report on cheap power supply for K2 > Message-ID: > Content-Type: text/plain; charset=UTF-8; format=flowed > >> On 29/12/2021 04:06, elecraft-requ...@mailman.qth.net wrote: >> A concern might be if the battery is fully charged using the 14 volt supply, >> and then a conventional 13.8 volt supply is accidentally connected with the >> battery turned on in the radio, then the voltage regulator of the >> conventional power supply might get confused. > > That should not be the case unless your K2 circuit is modified. D10 on > the RF board prevents voltage from the battery to reach the DC power > connector on the back. So there is no voltage from the battery to the > power connector and the power supply does not get confused. > > It is the same D10 that makes power supply selection for charging > difficult, BTW. In order to get 13.8V on the battery for charging, one > must pass D10 *and* the resistor in the KBT2 kit. Note that D10 got > changed to a schottky diode as part of the K2 A-to-B kit. Still, I have > my K2 power supply set to 14.2V for this reason. > > Note that "hey, I found a power supply that doesn't generate noise" for > me is just one selection criteria for power supplies. Other > considerations are safety and protection: correct fusing and the like. I > had a cheap charger explode within 8ft distance in a shack a few years > ago. The explosion ripped the casing out of the wall socket, ripped the > casing apart and left the electronics smoldering on the hotel carpet. > The thing sounded like a pistol shot but didn't even trigger the mains fuse. > > My question, then: would you mind if something like this were to happen, > in your shack, at night, and the resulting situation starting a fire? > There is a reason that "brandname" power supplies have more protection > circuitry: if there would be a fire in your shack, then with a brandname > power supply this is a liability case. > With an Amazon Special, whom would you make responsible? > > That is why I either use brandname power supplies or only charge when I > can attend the charge process. I don't want to badmouth your purchasing > decision, but perhaps this gives s
[Elecraft] K3 DVR comes and goes?
Hey y'all, I have an old K3 that we upgraded to K3S a few years back. It also has a DVR unit in it. All firmware is current. Today upon powerup the DVR didn't work - showed as not installed and obviously didn't work. I powered off the radio and back on again, and there was the DVR, working again as usual. I'm thinking the contacts may need cleaning on the DVR/pins - but also wondering if there's other things that I should check. I'm taking the radio on a dxpedition soon and want everything to work properly. Thanks, Jeff N6GQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Unsubscribe my deceased husband
JJWilson Sent from my iPad __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KAT3 (not KAT3A) issue - older K3 take note
TL;DR: Got a KAT3 in your K3? Next time you have your K3 open, pull out KAT3 and preemptively remove L10 and C10, and replace with a jumper. You don't need them and they are probably messing you up at times. (Are there any other older K3 issues like this? Tell me!) I have an early model K3 that still has all of its original modules. I was having an issue where the power output was sometimes dropping to just a few watts. Running the TX calibration would sometimes fail completely with weird error messages, but if I could get it to run it would get through most of the way but always fail on 52MHz due to high SWR (over 2). With a dummy load or a matched antenna, SWR was over 2 also in normal operation. Of course, this low power situation would magically correct itself after some poking around, though the 52MHz high SWR was consistent. I finally decided that I wanted to do some 6m operating and I used the KAT3 to get matched to the load. I would just operate until something finally decided to fail fully. It did. After a few hours C10 on the KAT3 blew, LOUDLY and smokily. Undoubtedly due to some crazy high voltages presented by the tuner. After some sleuthing in the Elecraft reflector I found the C10/L10 filter issue being well discussed. Pulling them out and jumpering solved all my issues. With the K3, anyway. :) This filter was not included in the KAT3A. If you have one of those, you're good. If you want to know more about the history of this filter it's easy enough to find in the email archives. :) Hope this helps - jeff wk6i -- Jeff Stai ~ WK6I ~ wk6i.j...@gmail.com RTTY op at W7RN Twisted Oak Winery ~ http://www.twistedoak.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] XV222 Mods Question
hi Mike - I checked my notes from field testing the XV222 and didn't see any C12 mod, and I checked my actual XV222 and didn't find any extra caps there. Regarding Z4... there were a series of Builder's Alerts that came out with mods to be made. It's possible that yours is also a field test and/or some of the mods were not done in your version. Don W3FPR may be better able to talk to that, and to have the Builder's Alerts handy in digital form so I don't have to scan them for you. :) Anyway, Alert #5 says Z4 is supposed to be a 56 ohm resistor. I'll have to dig deeper to see what is up with Q1. 73 jeff wk6i On Thu, Jun 10, 2021 at 3:08 PM Don Wilhelm wrote: > Mike, > > Has the paint been cleared from all parts of the enclosure that contact > the 2D connectors? > If not, that could be reason for your observations. > > You might want to remove those capacitors to see if all is well without > them. > I have lots of experience with the Elecraft transverters and do not > recall that as a mod. > > 73, > Don W3FPR > > On 6/10/2021 5:37 PM, Mike Cizek W0VTT wrote: > > Greetings, > > > > > > > > I recently purchased a used XV222 that had some modifications done in the > > local oscillator circuit. The construction was very sloppy, but > transverter > > works OK most of the time. Power output is adequate with good audio on > SSB > > and receiver sensitivity seems OK. Sometimes the xvtr goes in to > parasitic > > oscillation. I can stop the oscillation by touching certain parts of the > > case, and it will operate normally for a while. Weird. I cannot find > any > > documentation about the mod on line. > > > > > > > > It appears that two 2.2 pF caps have been added (on the bottom side of > the > > board) in parallel with C12 (10pF), and the collector of Q1 goes above > the > > board directly to Z4 instead of into its hole in the PCB. Has anyone > seen > > this mod or the reason for it documented anywhere? > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wk6i.j...@gmail.com > -- Jeff Stai ~ WK6I ~ wk6i.j...@gmail.com RTTY op at W7RN Twisted Oak Winery ~ http://www.twistedoak.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] using the sub receiver in a K3S with a 2nd P3?
I am looking for any information on hooking up a P3 to the sub-receiver in a K3S. Any help would be appreciated. 73, Jeff, K3DUA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] OT: High school drafting class, ~1975
Not offered in my HS as I recall in 1976 but in college one quarter of it was required. I enjoyed it so much I took the second quarter. My son who almost has his degree also recently took "drafting" courses, in which they did an entire internal combustion engine including animating it when it was done. Yike. 73 jeff wk6i On Fri, Apr 23, 2021 at 10:11 PM Wayne Burdick wrote: > OK, I've really dated myself now. > > Anyone remember "drafting"? A favorite class in high school: blueprints, > mechanical drawings, schematics, straight edges, hand lettering, > projections and elevations. We invented things to draw that weren't real, > but looked like they should be. Did all the math by hand -- on a slide > rule, if necessary. Day-dreamed about what we might one day build. > > -- Jeff Stai ~ WK6I ~ wk6i.j...@gmail.com RTTY op at W7RN Twisted Oak Winery ~ http://www.twistedoak.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K3 WTB 1.8KHz, 15KHz Filters + KDVR3 please.
As per the topic, I'm after a 1.8KHz Filter, a 15KHz filter and a KDVR3 for my K3 at a reasonable price please. (Yes, I know that Inrad still sell them but I'm hoping to find something cheaper in here) Thanks in advance, Jeff Cochrane VK4XA Innisfail, Queensland Australia - Jeff Cochrane - VK4XA Innisfail, QLD, Australia. K3 #3545 -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K3 WTB - Filters and KDVR3
Hi everyone, I have recently rejoined the Elecraft fold with K3 serial #3545 I am looking for a couple of filters for it as it is only fitted with the stock 2.7KHz 5 pole SSB filter. What I am after is a 1KHz 8 pole and a 2.1KHz 8 pole for it as well as the KDVR3. Does anyone out there have these at a reasonable price? (and who are willing to ship the items to Australia) Thanks in advance, Jeff Cochrane VK4XA Innisfail, Queensland, Australia - Jeff Cochrane - VK4XA Innisfail, QLD, Australia. K3 #3545 -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Are external tuners really needed with Chamaeleon antennas?
I am considering purchasing a Chamaeleon MPAS Lite and from what I gather from advertisements they require an external wide range antenna tuner to work. I have a kx2 with the internal tuner. I am guessing there is something beyond my paygrade as to why this would not be sufficient? If anyone has direct experience with these antennas please let me know your experience and what you think. Also… I am interested in this particular antenna because I am visually impaired and it seems like something I could set up myself relatively easily. Thanks! 73 KO4NE Sent from my iPhone __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K3 for sale
I have my K3 for sale. Used about 5 hours after build, for test and calibration. Have all the manuals etc. K3-100KAT3KBPF3KFL3-400KXV3A Perfect condition.$1500.00 Contact me offlist at:jmartin...@hushmail.com Thanks,N7KRTJeff Martin __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] FS: Elecraft KPA1500 amplifier
I offer for sale my KPA1500 amplifier in excellent cosmetic and operational condition. Given the amount of nonsense I see on a lot of boards with respect to high end gear sales, I would welcome the serious buyer come to the shack for a first hand personal check out of the amp so the new owner can be 100% satisfied of it's condition. For those otherwise trusting buyers who don't associate my callsign with that of a scoundrel, I would be willing to do some driving for a meet up & hand off as part of the deal. QTH here is about 30 minutes south of Kansas City, KS, in the lovely center of the propagation black hole here in the great USA. $5400 OBO. Those interested - kindly contact me off list to jeff at ac0c dot com Happy Thanksgiving and this year it looks like we will have some extra propagation on the CQ WPX CW contest this weekend as well to be thankful for. 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KIO3 Digital Board Failed and WSJTx transmit issues
Hi EdI just solved a similar problem with my K3 (s/n 1900 plus all K3 upgrades) setting up WSJTx after Windows 10 update and having to renumber COM ports that use FTDI chip USB adapters. I could not set my usual config for CAT and PTT (using CAT) and got a PTT ERR on the K3 which would go into TX but without power on WSJTx boot up. Just pushing TEST on and then off reset the K3IO and I was off to the races. This is in the original K3 manual, page 19 I think. Found on a previous post after search PTT ERR. In the K3 Manual: " If a PC or other device asserts RTS or DTR DIGOUT 1 while you're in the PTT-KEY menu entry, the K3 will enter TEST mode as a precaution. Page 19 In the tables below, 0 = 0 VDC, and 1 = device Normally, when the K3 is turned on, a 5-VDC logic supply voltage. signal appears on ACC pin 7 (K3 ON)." I thought my K3IO was toast as WSJTx software and FTDI serial USB adapters all worked fine with my FT-1000mp. This was caused by adjusting the K3 MENU and CONFIG setting while changing things on WSTJx at the same time.must have been in panic mode. Hi. Hope this helps.73Jeff VE3CV __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K4 Second RX and Transverters
I have sent this question to Elecraft support a few times over the last few weeks without a response, so I am giving it a try here. If I have a basic K4 and a 2M transverter attached, will I be able to monitor 6M or any other internal band off of the single main antenna port and also have a 2M transverter frequency on the 2nd RX? Or is the transverter considered a second antenna and would require the K4D with he second RX path to have the two bands at the same time? The transverter would use the 10M IF, but I am not sure how the pathing works if the transverter port would be an either or with the main antenna without a K4D. Jeff K9KLD __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Elecraft KAT500/KPA500 PowerCombo only Partially Compatible with Modern Kenwood Rigs
Just a little public service announcement that the Elecraft KAT500/KPA500 PowerCombo is only partially compatible with modern Kenwood radios. To whit… the PowerCombo works with VFO A, but not VFO B. Most modern rigs come with dual VFO’s, of course. And many come with outright dual receivers. This ability to quickly monitor and move between bands/frequencies comes in handy in a variety of scenarios. And most of us happily bounce between these dual VFO’s without attaching any particular importance to one over the other. The problem lies with the KAT500, which reliably tracks VFO A… but which cannot track VFO B. The upshot being that if you’re operating VFO A, the KAT500/KPA500 PowerCombo will work as expected. But as soon as you toggle over to VFO B the KAT500 will manifest with clacking relays with every Tx on/off transition and the KPA500 will instantly fault with High Reflected Power if it is brought online in SWR conditions that required a tuned solution from the KAT500. Said differently, if you’re operating in conditions where native, un-tuned SWR is low – where you don’t need the KAT500, in other words - the KPA500 works perfectly. But as soon as you move to a frequency with a moderate-or-higher SWR – a situation where you need the KAT500 to insert its tuned solution – it cannot do so, and the KPA500 faults. The behavior is independent of the best practices usually espoused for the KAT500… always operate in ‘Manual,’ “train the tuner” to lock in inductor/capacitor settings in advance, and do that pre-tuning with 25-watts or more for greater accuracy. This VFO B problem applies to the Kenwood TS-590SG, TS-890S, TS-990S, and perhaps others. On their own, the KAT500/KPA500 PowerCombo are a remarkable addition to any shack. Profound is the word I’ve often used to describe their impact. However, the inability to use VFO B in conjunction with them is a pretty major failing. I have no information one way or the other, but I suspect the KPA1500 also suffers from this issue. Probably the thing that surprises me most is that this issue has apparently existed for years… and yet has not been socialized anywhere that I’m aware of. Neither the Kenwood TS-890S User Manual nor the Kenwood TS-890S In-Depth Manual make mention that their VFO’s A and B implement slightly different character streams. Elecraft’s KAT500 Automatic Antenna Tuner Owner’s Manual doesn’t mention that interfacing with Kenwood radios is a problem. Fred Cady, KE7X (RIP), doesn’t mention it in his KPA500 Amplifier and KAT500 Tuner manual. And it doesn’t appear to have made its way into any knowledgebase within Elecraft itself. One wonders how many hours have been spent by Elecraft staff and Elecraft customers – and how many KAT500 and KPA500’s have been shipped back for repair – because of this one issue. And that’s why I’m posting it here. I’d like to thank Bob and Dick from Elecraft for their prompt, professional, and thoughtful assistance in helping me to look at the anomalous behavior I’ve always seen, but never could quite pin down, with my KAT500/KPA500. And I’d especially like to thank Andy Durbin, K3WYC, for finally illuminating what was actually going on. Andy submitted a defect report last fall and hopefully Elecraft will prioritize it at some point. In the meantime, if you’re running a Kenwood rig and are contemplating adding the KAT500/KPA500 PowerCombo… be aware that there are issues. 73, Jeff K4EI __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Where is Elecraft Support ?
Continuing the OT parade, I have one. When I first joined the ASIC team at Western Digital I was assigned to complete a SCSI interface chip and get it into manufacturing. It was a design that they had decided not to produce... except for the fact that one frisky salesman sold it to an passenger jet manufacturer. Said mfr needed, for the whole lifetime of the jet in question, something like 30 units. But since there was a contract signed, we made it. 73 jeff wk6i On Wed, Mar 11, 2020 at 1:19 PM Alan wrote: > My experience with lifetime buys was at HP/Agilent. They would only do > such a buy when the manufacturer announced a part discontinuance. You > then figure out how many parts you need for the expected product > lifetime plus spares for future repairs and buy that many to put in stores. > > It's a pain in the neck because it can be expensive to store all that > unused inventory and it's hard to estimate product lifetime years in > advance. So if possible you try to find a substitute part, even if that > may involve some re-design. But sometimes a lifetime buy is the only > reasonable solution. > > Alan N1AL > > > On 3/11/20 12:10 PM, Fred Jensen wrote: > > It is dependent on scale, David. The USAF flies large fleets of a > > number of different A/C and has in-place materiel warehousing and > > distribution facilities. > > > > On 3/10/2020 9:49 PM, David Gilbert wrote: > >> > >> That makes zero sense. > >> > >> What are you going to make a "Lifetime Buy" on? A synth? A front > >> panel? A tuner? You might as well buy a second (or third) rig since > >> you don't have a clue what might fail in the future, and if you buy > >> all those things separately (or worse yet the individual components > >> that go into them) you better plan on working an extra year or so > >> before retiring. > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wk6i.j...@gmail.com -- Jeff Stai ~ WK6I ~ wk6i.j...@gmail.com RTTY op at W7RN Twisted Oak Winery ~ http://www.twistedoak.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Visit to Elecraft HQ worthwhile?
hi Paul - I'm sorry I completely disagree. You do the drive north to south so you can easily pull over for every OMG view turnout without needing to turn left. :) 73 jeff wk6i On Tue, Jan 14, 2020 at 5:03 AM Paul Gacek via Elecraft < elecraft@mailman.qth.net> wrote: > > As to driving highway 1. My sense is its “easier”/more pleasant to do it > going south to north as you aren’t constantly worrying about the shear drop > to your immediate right. > > -- > Jeff Stai ~ WK6I ~ wk6i.j...@gmail.com RTTY op at W7RN Twisted Oak Winery ~ http://www.twistedoak.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] DZOTA: Dead Zones On The Air
And most of the SIERRA Nevada too! 73 jeff wk6i On Tue, Dec 10, 2019 at 3:18 PM Fred Jensen wrote: > and most of Nevada too. > > 73, > Fred ["Skip"] K6DGW > Sparks NV DM09dn > Washoe County > > On 12/10/2019 7:12 AM, Joseph Street wrote: > > DZOTA somost of Canada then. This jives perfectly with my desire > to go hike where nobody else wants to go. I might just get bitten by this > bug along with a few thousand mosquitoes and blackflies. One problem > though, I've never owned a cell phone. I need some other way of knowing > when I'm in a dead zone. Any suggestions? > > > > > > Joe ve3vxo > > > > > > From: elecraft-boun...@mailman.qth.net > on behalf of Wayne Burdick > > Sent: December 10, 2019 9:46:09 AM > > To: Elecraft Reflector > > Cc: elecraft...@groups.io > > Subject: [Elecraft] DZOTA: Dead Zones On The Air > > > > Have you seen those cell-phone company maps showing how much of the > country they cover? Inevitably, they reveal a patchwork of Dead Zones > (DZs): places where coverage is not just bad...it's non-existent. > > > > In such inhospitable realms, your choices are smoke signals, sat phone, > or ham radio. This smacks of an opportunity. Hence DZOTA. > > > > DZOTA places are often DeZerted. In fact, they are often in dezerts, in > contrast to many of the conspicuous high places typical of SOTA. This may > be a benefit to outdoor radio enthusiasts who, when hiking, prefer level > ground or even a gentle downward slope. And in an emergency, those hikers > might be the only ones around with comms. > > > > Where are the most notorious DZs? I have a few tiny cell network black > holes in my urban neighborhood, thanks to AT&T. But the truly inspiring DZs > are far from civilization, covering tens or hundreds of square miles. > Typically, they're also far from sources of noise. > > > > I have no illusions that DZOTA sites will be officially tracked and > chased anytime soon. Still, the "NO SIGNAL" icon on my phone now has new > meaning. It's a bug you, too, can change to a feature just by keeping a > radio in your vehicle at all times. > > > > In my case, it's the spare KX2 and AX1 under the driver's seat. > > > > 73, > > Wayne > > N6KR > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wk6i.j...@gmail.com > -- Jeff Stai ~ WK6I ~ wk6i.j...@gmail.com RTTY op at W7RN Twisted Oak Winery ~ http://www.twistedoak.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Looking for volunteer to design a tiny CW transceiver for socially isolated kids/teens
1) Wouldn't it be better to use one of the ISM bands? Then licensing is not a problem. I'd feel uncomfortable giving radios that operate in the ham bands to people without a license. There are bands 6.765-6.795MHz, 13.553-13.567MHz, and 26.957-27.283 close to our 40, 20, and 12/10 meter bands, and a number of bands in the VHF+ range. The 13MHz one is used by the HiFER <https://en.wikipedia.org/wiki/LowFER> experimenters already. There are also the LowFER and MedFER bands. 2) Does the pixie not meet the requirements? They're cheap ($3-5 on eBay), low power (~150mW), and have QSK. The kits you buy don't have a volume control, but that is simple to add. -- Jeff aa6xa __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Cruise lines
What I find interesting is their using the government supplied scanning equipment for free to remove any personnel alcohol, and increase their profit margin.75$ for a 7$ bottle of wine?! Along with the sub standard entertainment on board, bad food, etc. I avoid cruises like the plague. 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Paul Antos Sent: Wednesday, October 16, 2019 8:39 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Cruise lines Yes, RC prohibits amateur radio gear, but will happily sell you personal walkie talkies at the gift shop to talk to your far-flung mates on board ... perhaps the same thought as prohibiting bringing your own liquor on board. Paul NS2N Get Outlook for Android<https://aka.ms/ghei36> __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k...@arrl.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Cruise Lines
Try a different cruise line. Last year AMSAT had their annual meeting on a cruise ship. Radio operation was allowed on HF VHF and UHF without any issues from the ships officers. 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joseph Shuman via Elecraft Sent: Wednesday, October 16, 2019 10:48 AM To: Elecraft Mail Server Subject: [Elecraft] Cruise Lines Going on a cruise in a few months, so I emailed the cruise line about operating at sea with a KX2. Here is the reply: “Ham Radios, Shortwave Radios or Satellite Radios (portable or standalone) may not be brought on board as they pose a risk of interfering with onboard navigational equipment.” OK! The line has a right to say no. But... I have operated my KX2 QRP 40m portable with a GPS and Laptop in the transmission RF envelope with no interference problems. I know maritime uses mostly 156-162 MHz for ship to ship or ship to shore, some specific HF frequencies (outside of our bands) are allocated for emergency communications and satellite navigation is typically 1150-1610 MHz. Most ships now have WiFi and rely on phone apps for on-board communication, so there are a few thousand phones on board operating in the GHz range that are no problem. Also, as a USN Sub Service vet I learned a few things about at-sea comms 40-some years ago, and considering the improvements in our technology... Sorry if I seem to be ranting, but opportunities to operate at sea (for a OM in Ohio) are rare and this cruise line’s position seems to me to be the easy answer: ban all Hams outright. Keeping Watch- shu KE8KJZ Joe Shuman __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k...@arrl.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 VFO-B knob replacement notes
I have a spare stock K3 knob set left over from when I replaced them a few years ago with a set of heavy CNC machined ones. Only problem is there at my Florida home. If no one else steps forward with an original replacement for you I will send you the one I have when I get home in mid December. All I would possibly ask for is the shipping. Let me know 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Geert Jan de Groot Sent: Monday, October 14, 2019 6:00 PM To: Elecraft Reflector Subject: [Elecraft] K3 VFO-B knob replacement notes Hi, Recently I purchased a K3 and found I need to give it some love as it has been a bit behind on maintenance. One of the issues is that the VFO B knob has cracked. This is Elecraft part number E980090, listed as K3 spare part. Unfortunately, that knob is no longer available, and here is where the fun starts. What is sent instead, is Elecraft part E980275. Both E980090 and E980275 are listed but only E980275 is available. The replacement knob is smaller, the old knob is 1 3/8", the new knob is 1". Just replacing the knob won't work because the felt washer sticks out. Also, the encoder is too long and the new knob sticks out - the felt washer doesn't work. Called Elecraft sales and there is some confusion. The errata of the build instruction of the K3S (not K3) explains what has happened: - The new knob is smaller - it needs a different felt washer, replace E700033 with E700416 - the encoder needs an additional lock washer, E700150. - So, if you order a replacement, order all of this and plan to have to take the front panel apart. None of this is on the elecraft website. I also did not find anything in the reflector archives. And it's not in the K3 documentation, only the K3S documentation. This is kind of painful, since in addition to the price of the spare parts I ordered to get the K3 up to date ($173) I spent $80 on shipping, customs and postal admin overhead and I now find I have an incomplete mod kit. I will need to cut the wrongly-ordered felt washer to size and find a replacement lock washer to make the encoder sink deeper to match the new knob.. Again, this isn't listed in the spare parts on the website or on the reflector; it is now documented on the reflector, at least. Geert Jan __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k...@arrl.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K$ Delivery Euope
Well me too 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Macy monkeys Sent: Thursday, October 10, 2019 5:32 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K$ Delivery Euope Am I the only one finding the K$ typo mildly amusing? :) John K7FD > On Oct 10, 2019, at 2:15 PM, Ray Spreadbury via Elecraft wrote: > > Hi Udo > > I spoke to Eric at the UK Hamfest a couple of weeks ago. He said that > probably deliveries to Europe would be more like May/June/July with some > early examples perhaps being available to European Retailers for demos a > bit earlier. > > I also Emailed Elecraft Sales last week to enquire if I could get one in > Jan/Feb (the same as USA I think) by paying the deposit directly to > Elecraft. > > I received an answer from Madelyn Gomez a day later that before ANY > deliveries are made to Europe, the K4 will have to achieve European CE > Approval. > > Not sure what happens if the UK leave the EU at end October with Brexit !! > > 73 Ray G3XLG > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to macymonk...@charter.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k...@arrl.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA-1500 failing on 160...AGAIN!
It's from my head. I have a BVT - it's DC so the 4K is a DC claim. I BVT cables used here in the shack as a fast way to ensure I don't have some microscopic wire or filing or whatever down in a connector - stuff like that is a nightmare to troubleshoot. At one point I tried to use a PL259 for a HV run but it arced from time to time at 4.2KV. So at least in this shack, a PL259/SO239 is rated for well under 4KV. 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com On 9/27/19 3:14 PM, Walter Underwood wrote: Few of us can guarantee dry air for our antenna connections. Where is this data from? For the question “Has anyone tested them?”, I expect that Amphenol tests to the published specs. Those tests would be over the entire temperature range in the data sheet. If you visit the data sheets I linked for the UHF and type N connectors, you might notice that type N has spect for many more attributes than UHF. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) On Sep 27, 2019, at 11:04 AM, Jeff Blaine wrote: PL259/SO239 BDV is around 4KV in dry air. 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com On 9/27/19 1:01 PM, j...@kk9a.com wrote: 5000 watts is 500 volts rms with a perfect antenna system. I suspect that PL-259 connectors really can withstand much more than 500 volts. Has anyone tested them? My station has a mixture of UHF, N and DIN connectors and all have worked perfectly for 1500 watts HF. If PL-259s are failing they are either poor quality connectors or there are serious antenna issues causing excessive voltage. John KK9A Walter Underwood K6WRU Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] From the Amphenol data sheet, UHF connectors are rated for 500 V peak, so they are marginal for use at that power level. Type N connectors are rated at 1500 V peak. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to keepwalking...@ac0c.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to keepwalking...@ac0c.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA-1500 failing on 160...AGAIN!
I don't doubt the AMP connector is great but doubt this issue is due to a connector. One thing I can say from personal experience is that if you have a tall or long antenna, you definitely need a static bleed on that bad boy. Never really gave those stories much credence but a number of years back I was doing some work on an 80m full size vert one summer. Managed at one point to to reach up and touch a wire that was hanging off the vertical - and landed up on my butt from the jolt. So that static build up thing is real. Been using high value high power wire wound resistors for bleeding since. And a polyphaser to provide the discharge path in the event the voltage builds up too high from a nearby strike or whatever. The 1500 has PIN diodes for switching. Generically speaking running a PIN diode switched amp without a spark gap on the coax to clamp spikes from whatever cause seems like tempting fate one step too close. Maybe the 1500 has some internal protection - don't hear much about a lot of switching failure on the amp. But a GDT pass through like a polyphaser is cheap insurance. PS: CQ WW RTTY starts tonight!!! 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com On 9/27/19 1:48 PM, Jim Brown wrote: On 9/27/2019 11:01 AM, j...@kk9a.com wrote: If PL-259s are failing they are either poor quality connectors or there are serious antenna issues causing excessive voltage. YES! Only first quality connectors and adapters should be used. I run legal limit to resonant antennas fed with 50 ohm and 75 ohm coax and hard line. Amphenol 83-1SP connectors are the standard throughout my station. I use type N only on hard line for which UHF connectors are not available. I've NEVER experienced any symptoms of arcing in connectors. I HAVE seen lots problems caused by poor quality connectors and adapters, and by poorly soldered coax connectors when putting stations together for Field Day and similar operations. My rule: In North America, if the connector doesn't say Amphenol 83-1SP or have a MIL spec number stamped on it, it is JUNK. The same holds true for adapters. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to keepwalking...@ac0c.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA-1500 failing on 160...AGAIN!
PL259/SO239 BDV is around 4KV in dry air. 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com On 9/27/19 1:01 PM, j...@kk9a.com wrote: 5000 watts is 500 volts rms with a perfect antenna system. I suspect that PL-259 connectors really can withstand much more than 500 volts. Has anyone tested them? My station has a mixture of UHF, N and DIN connectors and all have worked perfectly for 1500 watts HF. If PL-259s are failing they are either poor quality connectors or there are serious antenna issues causing excessive voltage. John KK9A Walter Underwood K6WRU Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] From the Amphenol data sheet, UHF connectors are rated for 500 V peak, so they are marginal for use at that power level. Type N connectors are rated at 1500 V peak. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to keepwalking...@ac0c.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] No Speaker Audio / K3
Hello, I have a K3 that just recently lost speaker audio. No audio from the external amplified speakers I’ve been using, and nothing from the built-in K3 speaker when the external speakers are unplugged. Headphone audio is working fine. Any suggestions before contacting support? Thanks! Jeff, W4JSH Pleasant View, TN Sent from Mail for Windows 10 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] [K2] DXE Clifton Labs Z10000 Buffer Amp
Not sure about a review at DXE, but categorically anything cooked up by the late Jack Smith K8ZOA is an exceptional performer. The CLifton ports that DXE has done have been well implemented so you can expect good results. I've used the original Clifton version of the board in a number of projects and it's excellent. The huge reverse isolation ensures that the LO of the SDR does not feed back into the rig. 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com On 8/19/19 10:54 PM, Clark Macaulay wrote: Looking for comments about the reissue of this amp as I'm considering adding a panadapter to my venerable (and very capable) K2. There is only one review at DXE and it is not very complimentary. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3/0 complete remote system for sale
The K3/0 remote package has been sold. Thanks for all the interest. 73 Jeff kb2m From: jeff griffin [mailto:k...@arrl.net] Sent: Sunday, July 28, 2019 5:42 PM To: 'Elecraft' Cc: 'elecraft...@groups.io' Subject: K3/0 complete remote system for sale I have in excess of my needs a complete K3/0 remote system. This package will include.. 1. A K3/0 2. A remoteRig RRC-1258 MkII K3 Elecraft K3 twin set 3. An Astron SS-18 power supply. 4. A Yamaha CM500 headset w/PTT switch 5. All cables needed at both ends to hook up and power on. I used to run remote all of the time while traveling, but haven't used this but twice in the last year. You really can't beat having an actual hardware radio, the K3/0 in front of you while remoting. All equipment in scratch free, very good, non smoker condition. Pictures available if needed. $975 for the package shipped insured CONUS. Will ship offshore, but shipping will be extra, pre paid. 73 Jeff kb2m __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K3/0 complete remote system for sale
I have in excess of my needs a complete K3/0 remote system. This package will include.. 1. A K3/0 2. A remoteRig RRC-1258 MkII K3 Elecraft K3 twin set 3. An Astron SS-18 power supply. 4. A Yamaha CM500 headset w/PTT switch 5. All cables needed at both ends to hook up and power on. I used to run remote all of the time while traveling, but haven't used this but twice in the last year. You really can't beat having an actual hardware radio, the K3/0 in front of you while remoting. All equipment in scratch free, very good, non smoker condition. Pictures available if needed. $975 for the package shipped insured CONUS. Will ship offshore, but shipping will be extra, pre paid. 73 Jeff kb2m __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K4 and Linux Infrastructure
Missed reply all. At some level even if they do "only" have apps they will have this problem. App developers will need to be able to modify and test things. Also I doubt that there would be many apps if this is a separate process than mainstream linux/windows. why would a hobby developer want to build a separate thing just for one pretty expensive radio when they could just build the app for linux or windows and support everyone. Maybe they have some trick to make app onboarding easy. My 2 cents Jeff N6SDR >> On Mon, Jun 3, 2019, 5:45 PM Lynn W. Taylor, WB6UUT < >> kx...@coldrockshotbrooms.com> wrote: >> >>> Seriously folks, think about the folks in Elecraft support and Service. >>> >>> Imagine spending an hour working through a problem just to find out that >>> someone is running modified firmware (and this is firmware, not software >>> for us to play with). >>> >>> It's an embedded system. If you break it, you own both parts, and >>> Elecraft would need a 100% reliable way to verify that you didn't >>> introduce bugs. >>> >>> Let this idea go, folks. >>> >>> -- Lynn >>> >>> On 6/3/2019 3:31 PM, Dave Cole (NK7Z) wrote: >>> > Based on the lack of ability to chance the CW rise times, I suspect >>> > Elecraft will not give access to the processor, and OS. I would not. >>> > >>> > Why? If too many users change things, and break things, the radio >>> will >>> > get a bad rep... If Elecraft is smart, they will lock the users out >>> of >>> > that level of access. >>> > >>> > 73s and thanks, >>> > Dave (NK7Z) >>> > https://www.nk7z.net >>> > ARRL Technical Specialist >>> > ARRL Volunteer Examiner >>> > ARRL Asst. Director, NW Division, Technical Resource >>> > >>> > On 6/3/19 2:04 PM, Jeff Scaparra wrote: >>> >> I believe these are all good points that elecraft should consider. As >>> for >>> >> myself I am a tinker-er and as such i can imagine many things i would >>> >> like >>> >> to do with the on board system. Personally I would like the option of >>> >> "unlocking" access do that I could use the underlying linux system and >>> >> would be willing to be responsible for the security of the system if >>> I >>> >> did >>> >> so. I know there will be many who just want a good radio to operate >>> and >>> >> that is why I am suggesting that maybe this is a opt into thing with >>> the >>> >> caveat that if you unlock this your responsible to keep the radio >>> secure. >>> >> >>> >> Jeff >>> >> N5SDR >>> >> >>> >> On Mon, Jun 3, 2019, 3:35 PM Dave New, N8SBE wrote: >>> >> >>> >>> Paul, >>> >>> >>> >>> I believe you mistook the 'direction' of DDOS attack I was talking >>> >>> about. >>> >>> >>> >>> The K4 would not be the target of a DDOS attack, but rather an >>> unwitting >>> >>> participant in launching a DDOS attack as part of robot army of IoT >>> >>> devices. >>> >>> >>> >>> Thousands of hacked IoT devices are for rent on the dark web, for any >>> >>> script kiddie that wants to attack a particular target. >>> >>> >>> >>> Also, it may be popular to use hacked web sites, or various documents >>> >>> with trojan horse loads to deliver ransom ware or bitcoin miners, but >>> >>> there are other known vectors, including various open ports found >>> while >>> >>> scanning. It may be the a router would be able to block access, but >>> the >>> >>> very peer-to-peer nature of the K4 (controlling other K4's or being >>> >>> controlled by another K4 or PC, tablet, etc, means that routers would >>> >>> need to allow certain inbound connections through the router or >>> >>> firewall. These allow for interesting attack vectors, which will >>> >>> certainly be exercised, if possible. >>> >>> >>> >>> 73, >>> >>> >>> >>> -- Dave, N8SBE >>> >>> >>> >>> Original Message >>> >>> Subject: Re: [Elecr
Re: [Elecraft] K4 and Linux Infrastructure
Actually there is more to think about than security here as well. What would elecraft do about users that break the system but misconfiguring stuff, etc... if they allow users to opt in I would fully expect users to have to agree to owning responsibility for any modifications. This would mean that if you have a problem with the radio and send it in and the problem is solved by reflashing the base image then you should be charged for wasting their time. I would also expect to have the base image given to users so we can fix our own mistakes. I think this problem will exist one way or another. Quite likely elecraft will be legally required to make available some or all of the base image of the radio due to software licences. It is also likely that someone will figure out how to get access to the underlying system. In my opinion elecraft can get out in front by setting expectations and telling users if you do this your on your own from a warranty perspective. It would be nice of them to limit that but they could have that void the whole warranty. It will be interesting to see how they handle this. This is precisely the reason I got put my deposit for the second group. I want to see how this shakes out before commiting which means I cant be the first one with the radio. Jeff N5SDR On Mon, Jun 3, 2019, 4:04 PM Jeff Scaparra wrote: > I believe these are all good points that elecraft should consider. As for > myself I am a tinker-er and as such i can imagine many things i would like > to do with the on board system. Personally I would like the option of > "unlocking" access do that I could use the underlying linux system and > would be willing to be responsible for the security of the system if I did > so. I know there will be many who just want a good radio to operate and > that is why I am suggesting that maybe this is a opt into thing with the > caveat that if you unlock this your responsible to keep the radio secure. > > Jeff > N5SDR > > On Mon, Jun 3, 2019, 3:35 PM Dave New, N8SBE wrote: > >> Paul, >> >> I believe you mistook the 'direction' of DDOS attack I was talking >> about. >> >> The K4 would not be the target of a DDOS attack, but rather an unwitting >> participant in launching a DDOS attack as part of robot army of IoT >> devices. >> >> Thousands of hacked IoT devices are for rent on the dark web, for any >> script kiddie that wants to attack a particular target. >> >> Also, it may be popular to use hacked web sites, or various documents >> with trojan horse loads to deliver ransom ware or bitcoin miners, but >> there are other known vectors, including various open ports found while >> scanning. It may be the a router would be able to block access, but the >> very peer-to-peer nature of the K4 (controlling other K4's or being >> controlled by another K4 or PC, tablet, etc, means that routers would >> need to allow certain inbound connections through the router or >> firewall. These allow for interesting attack vectors, which will >> certainly be exercised, if possible. >> >> 73, >> >> -- Dave, N8SBE >> >> Original Message >> Subject: Re: [Elecraft] K4 and Linux Infrastructure >> From: Paul Gacek >> Date: Mon, June 03, 2019 4:00 pm >> To: "Dave New, N8SBE" >> Cc: Elecraft Reflector , Rick WA6NHC >> >> >> Dave >> >> DDOS is quite hard for any end point (PC, iPhone, K4 etc) to deal with >> effectively. If a million zombie Macs decide to simultaneously attack >> your end point your best chance is as Rick states, a device that makes >> up the perimeter defenses such as a firewall or cyber security >> alternative (i.e router, IDP). Most homes don’t have anything >> particularly sophisticated deployed and are therefore somewhat >> vulnerable. In truth DDOS attacks are quite rare and typically not aimed >> at Citizen Dave or his neighbors. Protection albeit optimistic is really >> in the realm of a corporate network but even then we have a few cases >> where iconic sites get hammered and go dark. Enabling the K4 to defend >> against DDOS is a little like building a house to withstand random bits >> of ISS dropping in unexpectedly; not something I’m expecting to be >> paying for. >> >> Unwanted ransomware or bitcoin mining programs are most likely the >> result of an unwitting end user at and end point (PC, Android etc) doing >> something that resulted in the malware ending up on their end point. >> Could be surfing to a suspect web site (www.PawnStorm4U.com) or even >> going to a compromised but reputable site such as NASA.gov. >> Alternatively, it could be someone openi
Re: [Elecraft] K4 and Linux Infrastructure
I believe these are all good points that elecraft should consider. As for myself I am a tinker-er and as such i can imagine many things i would like to do with the on board system. Personally I would like the option of "unlocking" access do that I could use the underlying linux system and would be willing to be responsible for the security of the system if I did so. I know there will be many who just want a good radio to operate and that is why I am suggesting that maybe this is a opt into thing with the caveat that if you unlock this your responsible to keep the radio secure. Jeff N5SDR On Mon, Jun 3, 2019, 3:35 PM Dave New, N8SBE wrote: > Paul, > > I believe you mistook the 'direction' of DDOS attack I was talking > about. > > The K4 would not be the target of a DDOS attack, but rather an unwitting > participant in launching a DDOS attack as part of robot army of IoT > devices. > > Thousands of hacked IoT devices are for rent on the dark web, for any > script kiddie that wants to attack a particular target. > > Also, it may be popular to use hacked web sites, or various documents > with trojan horse loads to deliver ransom ware or bitcoin miners, but > there are other known vectors, including various open ports found while > scanning. It may be the a router would be able to block access, but the > very peer-to-peer nature of the K4 (controlling other K4's or being > controlled by another K4 or PC, tablet, etc, means that routers would > need to allow certain inbound connections through the router or > firewall. These allow for interesting attack vectors, which will > certainly be exercised, if possible. > > 73, > > -- Dave, N8SBE > > Original Message > Subject: Re: [Elecraft] K4 and Linux Infrastructure > From: Paul Gacek > Date: Mon, June 03, 2019 4:00 pm > To: "Dave New, N8SBE" > Cc: Elecraft Reflector , Rick WA6NHC > > > Dave > > DDOS is quite hard for any end point (PC, iPhone, K4 etc) to deal with > effectively. If a million zombie Macs decide to simultaneously attack > your end point your best chance is as Rick states, a device that makes > up the perimeter defenses such as a firewall or cyber security > alternative (i.e router, IDP). Most homes don’t have anything > particularly sophisticated deployed and are therefore somewhat > vulnerable. In truth DDOS attacks are quite rare and typically not aimed > at Citizen Dave or his neighbors. Protection albeit optimistic is really > in the realm of a corporate network but even then we have a few cases > where iconic sites get hammered and go dark. Enabling the K4 to defend > against DDOS is a little like building a house to withstand random bits > of ISS dropping in unexpectedly; not something I’m expecting to be > paying for. > > Unwanted ransomware or bitcoin mining programs are most likely the > result of an unwitting end user at and end point (PC, Android etc) doing > something that resulted in the malware ending up on their end point. > Could be surfing to a suspect web site (www.PawnStorm4U.com) or even > going to a compromised but reputable site such as NASA.gov. > Alternatively, it could be someone opening a compromised PDF or > Word/Excel attachment. The best protection here is to be cautious and > mindful of what you do in the cyber world and absolutely make sure you > are running the most uptodate OS (not XP) and to its most current patch > level. > > > Presumably but maybe not, the K4 won’t make available to the ham > operator a browser that allows them to surf wherever nor an email client > that they can read Excel attachments at the whim of the ham operator. > That is best done outside of the K4. > > > Hardening Linux, following best practices on coding and penetration > testing are all things to be aware of and implement as appropriately. > > > For those who might be interested in perusing details of some of these > topics these links might be interesting; > Secure Coding Practices > https://msdn.microsoft.com/en-us/aa570401Hardening Linux > > https://www.computerworld.com/article/3144985/linux-hardening-a-15-step-checklist-for-a-secure-linux-server.htmlPenetration > Testing https://www.tenable.com > > > With Elecraft’s proximity to Silicon Valley and presumably contacts > abounding, I’m optimistic the K4 will do us proud and I won’t have > to rely on Rocky and Bullwinkle to keep nefarious foreign agents out of > my K4. > > > Paul > W6PNG/M0SNA > www.nomadic.blog > > > > > > > On Jun 3, 2019, at 7:58 PM, Rick WA6NHC wrote: > > Much of that protection can be implemented at the router level (>90% of > all sites) and the internal linux (fairly bullet proof) will deal with > the
Re: [Elecraft] KPA1500 fans
Is there a fan mod other than a firmware upgrade? 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com On 6/3/19 10:14 AM, Dan Atchison via Elecraft wrote: I have all of the KPA1500 fan mods and firmware upgrades and they make the amplifier so much quieter.?? Good job, Elecraft. What I would like to see, however, is a firmware /option /to exhibit the following tendency. Minimum fan speed at 0.?? When the amp detects a PTT, then the fan speed would increase to fan level 1 and remain that way for a period of time after PTT detection has ceased (perhaps 10 - 15 seconds?). After that delay time it would go back to fan speed 0.?? Of course, temperature sensing would increase fan speed regardless of the PTT sense. If this has been discussed before, I missed it.?? If it's currently available then I missed it again. Awaiting my K4.?? I hate waiting! 73, Dan -- N3ND __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 USB audio CODEC TX audio issue
Jeff, Just checking things I have forgotten in the past. You do have the mode set to Data and the Data sub-mode set to Data A correct? 73, Mark, WB9CIF Yup. -Original Message- From: HB [mailto:h...@optilink.us] Sent: Saturday, June 1, 2019 12:56 PM To: jeff griffin Cc: Elecraft Subject: Re: [Elecraft] K3 USB audio CODEC TX audio issue Make sure the new version of WSJT-X still has the correct codec selected. Also, Open the Windows volume control and check the volume level for the codec Went over all settings, still no TX. I even swapped out the USB cable. I connected a IC-9100 I brought up here with me to use as a SAT radio backup and after 5 minutes I had contacts on FT8. I think there is something wrong with the KIO3B, looks like I will be calling Elecraft on Monday... 73 Jeff kb2m > On Jun 1, 2019, at 11:24 AM, jeff griffin wrote: > > Having an issue with no USB TX audio. When in TX all I see is one bar on > the rf out meter, 0 ALC. Upon return to my summer home in NJ I started up my > K3 which was on remote duty for the winter. All is working well except the > USB audio CODEC TX. This all was working when I left. At first I expected > the new version of WSJT X, but I'm having the same problem with another > application. I went through the KIO3B install manual and everything is set > correctly. I'm running K3 firmware level 5.67, which I also updated to > assure no issues with the same version that was already installed. I > uninstalled the USB drivers and let the system re-install. I'm not > experiencing any normal SSB TX issues, the K3 transmits TX audio fine in SSB > voice mode. I'm thinking the KIO3B has an issue, possibly an loose internal > cabling issue? Anyone ever have this same issue? Anyone have any ideas? > Thanks for reading.. > > > > 73 Jeff kb2m __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 USB audio CODEC TX audio issue
Having an issue with no USB TX audio. When in TX all I see is one bar on the rf out meter, 0 ALC. Upon return to my summer home in NJ I started up my K3 which was on remote duty for the winter. All is working well except the USB audio CODEC TX. This all was working when I left. At first I expected the new version of WSJT X, but I'm having the same problem with another application. I went through the KIO3B install manual and everything is set correctly. I'm running K3 firmware level 5.67, which I also updated to assure no issues with the same version that was already installed. I uninstalled the USB drivers and let the system re-install. I'm not experiencing any normal SSB TX issues, the K3 transmits TX audio fine in SSB voice mode. I'm thinking the KIO3B has an issue, possibly an loose internal cabling issue? Anyone ever have this same issue? Anyone have any ideas? Thanks for reading.. 73 Jeff kb2m __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 4K Ultra High Def version of Elecraft K4 Q&A Video Posted by NG7M
Absolutely and I am very excited to see a top manufacturer giving what looks like will be first class support for Linux. What I was most excited to see though was that the radio looked like it might be running a mainstream Linux distro. My personal opinion is that giving the consumer the option to have access to that would really open up the possibilities with this radio (and help many to justify the cost). If my radio can run all the software I need for all my communications, logging, etc... I don't have to worry how I have emergency power for the radio AND a laptop or computer for field day or actual emergencies. I can only have a plan for 12V emergency power (battery, solar, ...) and I don't need an inverter or generator or worry about boost/buck converters for my other non 12v equipment. My only real fear is that before the release Elecraft would lock that down so that the consumer doesn't have a way to at a minimum unlock the underlying OS to use in this way. I fully understand that some won't want to deal with the underlying OS but I also think there are many that would. External monitors that run off 12 v are also easy found due to the car market ( https://www.amazon.com/Monitor-Computer-Display-Security-Speaker/dp/B0779PM23K/ref=sr_1_8?keywords=12v+hdmi+monitor&qid=1559195100&s=gateway&sr=8-8 ). Jeff N5SDR. On Thu, May 30, 2019 at 12:33 AM Bill Frantz wrote: > I think it was Eric who said, in one of the recorded interviews, > that the pad controlling the K4 at "Dayton" was running Linux, > and that any device that could provide a virtual machine that > could run Linux could run the control software. > > Also, Wayne posted that they would never run Windows in the K4. > And I'll bet they don't have a deal with Apple to run MacOS/iOS. :-) > > 73 Bill AE6JV > > On 5/30/19 at 10:07 PM, j...@scaparra.com (Jeff Scaparra) wrote: > > >One thing I > >noticed is the screen they have hooked up to the K4 looks like it is > >running ubuntu. > > --- > Bill Frantz| "I wish there was a knob on the TV to turn > up the > 408-356-8506 | intelligence. There's a knob called > "brightness", but > www.pwpconsult.com | it doesn't work. -- Gallagher > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 4K Ultra High Def version of Elecraft K4 Q&A Video Posted by NG7M
Wow the radio looks much more impressive in high definition. One thing I noticed is the screen they have hooked up to the K4 looks like it is running ubuntu. I find that very interesting. Either it wasn't hooked up to the radio and it was hooked up to a linux box or we may have access to a linux distro right in the radio. That would actually be cool as people wouldn't have to use it but I would like to run logging software, WSJT-X, fldigi for weird digital modes, etc right there on the radio. I really hope they don't lock that down too much or give us experimenters a way to "unlock" the radio to really exploit these features. In my opinion that is one of the appeals for the MB-1 but the price, lack of diversity, and the fact that it uses windows i think has turned a lot of people off. Jeff N5SDR. On Wed, May 29, 2019 at 5:29 PM M. George wrote: > Hi everyone, I was surprised to see that Elecraft included a link to the > YouTube video I posted of my quick Q&A with Eric WA6HHQ at Hamvention. If > I would have known Elecraft was going to share the link, I would have > waited to upload the 4K version of the K4. :) If you have 4K capabilities, > you can now see Eric Swartz immortalized in 4K 60 frames per second > <https://www.youtube.com/watch?v=QakxQGFaDwA> on your high computer or 4K > capable big screen TV. > > Is this overkill for an interview / Q&A video, yes... but hey, it's 2019 > and the long awaited K4 has been announced, so it makes sense to have a 4K > UHD video of the K4 (Palindrome <https://en.wikipedia.org/wiki/Palindrome > >). > This version is a full frame version compared to the original video. The > quality is much better and you can select resolutions all the way up to 4K > 60fps (if you have the hardware to view UHD video that is). > > On YouTube you can't replace a video and keep the same URL link, so I'll > leave both versions up on my YouTube channel. > > Here is the new direct link if you want to see the higher quality version: > https://www.youtube.com/watch?v=QakxQGFaDwA > > Max NG7M > > -- > M. George > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K4 DSP bit width
Comparing a 24 bit ADC at a 32 KHz sample rate to a 16 Bit ADC at 122 Msps and saying it is less bits and therefore will have worse performance isn't a great comparison. The high speed ADC would be highly oversampling the signal at the second IF. This allows the ADC to use some neat tricks to effectively get more bits. https://en.wikipedia.org/wiki/Oversampling https://www.silabs.com/documents/public/application-notes/an118.pdf I don't think we can determine theoretically if the K4 can perform better or worse than the K3s from the current data that we have. On Wed, May 29, 2019 at 12:08 AM Bill Frantz wrote: > A friend and I were discussing the K4HD and he said that it > sounds a lot like the K3S. Well, we both agreed that since the > K3S has world class receiver specs, that would not be a bad thing. > > I started comparing the information about the K4HD with the K3S > manual and found: > > K3S K4HD Feature > 8.215MHz ~8MHz First IF > 15KHz ? Second IF (if used in the K4) > 24 16ADC width > ~30KHz? 122MHz ADC sample rate (WAG for the K3S) > 5 2+1Crystal filters (one empty slot is from a post > on this list.) > > > Note: In the K4 FAQ there are forward references to a K4HD > section, but I couldn't find it on the web site. > > > Analysis and wild speculation > > Both DSPs and ADC technology have had at least 10 years to > improve between the K3S and the K4. WHile I don't track ADC > tech, DSPs are computers and we all know what has happened in > computers. The basic processors are somewhat faster, and there > are many more cores on a chip. The K4 certain to have taken > advantage of these improvements. > > The K3S uses a 32 bit floating point DSP, and I don't see any > reason to change that specification for any of the K4 models. > Not changing means that much of the K3 DSP code should easily > port to the new DSP. > > I don't understand how the basic K4 can get good dynamic range > with a 16 bit DAC. The K3's 24 bit DAC seems a better choice, > although getting high speed and wide bit width at the same time > is hard and expensive. > > In the wild speculation department, there seem to be several > approaches for the K4HD. (1) Run a K3 like superhet with an > ~8MHz IF and digitize that into the DSP. (2) Duplicate the K3's > 2nd IF and use the 16 bit ADC at 15Khz. (3) Use a wider ADC at > either 8MHz or at 15KHz. Note that one of the features of the K4 > is ease of upgrade to new ADCs. > > 73 Bill AE6JV > > --- > Bill Frantz|"Web security is like medicine - trying to > do good for > 408-356-8506 |an evolved body of kludges" - Mark Miller > www.pwpconsult.com | > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Mobile high power
You see lots of mobile radios out in rural areas. Volunteer fire departments. This need won't go away soon. Vehicle electronic sensitivity is nothing new. At least 20 years ago I recall keying 100 watts in traffic on my morning commute and seeing the trunk of the Lexus in front of me pop right open. Another time I pulled into a parking structure while wrapping up a UHF QSO (short antenna) and set off every car alarm on the floor. Good times. Hopefully improvements have been made since then. 73 jeff wk6i On Mon, May 6, 2019 at 10:12 AM Ken Winterling wrote: > I believe all of the vehicles I've owned have had a statement in their > manuals about transmitters. Despite that, vehicles from many > manufacturers, domestic and foreign, are used in services that use > transmitters such as police, fire, ambulance, taxi, etc. Some services use > multiple radios in vehicles covering everything frequencies from HF through > 900mHz (and above?) and varying power levels. I have yet to see one of > those vehicles have any RF-related problems affecting vehicle electronics. > > If commercial radio installation companies can install transmitters in all > of these vehicles without harm it seems to me that hams can do it using > similar installation procedures. They are carfeul as to where power is > sourced and fused as well as to how power, control, and antenna wires are > routed in the vehicle. None of my radio installations since 1970 have ever > caused a problem in any vehicle I owned. > > Ken > WA2LBI > > > > > > On Mon, May 6, 2019 at 12:51 PM Steve Sergeant > wrote: > > > My 2014 Honda Insight includes an almost identical statement in its > manual. > > > > I've only dared operate HTs with magmounts in this car, so far with > > impunity. > > > > > > On 5/6/19 9:45 AM, Phil Hystad via Elecraft wrote: > > > My 2018 Toyota RAV4/Hybrid has a warranty statement saying “Do not > > operate mobile based radio transmission equipment” and that this could > (not > > would but could) violate the warranty. > > __ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft@mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html -- Jeff Stai ~ WK6I ~ wk6i.j...@gmail.com RTTY op at W7RN Twisted Oak Winery ~ http://www.twistedoak.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] will the Beep ever be silenced?
recap: while using the freq utility with kx3: every time you QSY there is a beep. a beep in the headphones a beep I cannot silence -Original Message- From: Wayne Burdick [mailto:n...@elecraft.com] Sent: Thursday, November 16, 2017 08:19 AM To: herr42 Cc: Ron D'Eau Claire; Elecraft Reflector Subject: Re: [Elecraft] Beep This is definitely on the KX3/KX2 firmware task list. Wayne N6KR > On Nov 16, 2017, at 3:24 AM, herr42 wrote: > > Nope > > > > Sent from my Verizon 4G LTE smartphone > > > Original message > From: Ron D'Eau Claire > Date: 11/15/17 8:09 PM (GMT-08:00) > To: 'Jeff Herr' , 'Wayne Burdick' > Cc: elecraft@mailman.qth.net > Subject: RE: [Elecraft] Beep > > SW TONE won't silence it? > > From page 65 of the KX3 Owner's manual: > > '... Switch press tones are enabled by default. Using the > SW TONE menu entry, you can turn tones OFF, > ON,..." > > 73, Ron AC7AC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [KX3] Re: Who's your favorite Elecraft Elmer?
I recommend Paul - WB2HHH Super intelligent and super helpful to all hams needing help with Elecraft and all aspects of the hobby! Jeff K2SDR > On Mar 12, 2019, at 3:52 PM, 'hawley, charles j jr' c-haw...@illinois.edu > [KX3] wrote: > > I am going to recommend Mike Blake K9JRI. He is an excellent diagnostician > and understands a schematic better than most folks. He’s also an experienced > networking engineer and administrator which goes a long way to solving some > of the issues that seem hardware based at first. > > Chuck Jack > KE9UW > > Sent from my iPhone, cjack > > > On Mar 12, 2019, at 12:15 PM, Wayne Burdick > <mailto:n...@elecraft.com>> wrote: > > > > elecraft dot com. > > __._,_.___ > Posted by: "hawley, charles j jr" <mailto:c-haw...@illinois.edu>> > Reply via web post > <https://groups.yahoo.com/neo/groups/KX3/conversations/messages/65243;_ylc=X3oDMTJyYjR1Z3FnBF9TAzk3MzU5NzE0BGdycElkAzc0NTIwOTQ3BGdycHNwSWQDMTcwNTA2MzEwOARtc2dJZAM2NTI0MwRzZWMDZnRyBHNsawNycGx5BHN0aW1lAzE1NTI0MjAzMzU-?act=reply&messageNum=65243> > • Reply to sender > <mailto:c-haw...@illinois.edu?subject=Re%3A%20%5BElecraft%5D%20Who%27s%20your%20favorite%20Elecraft%20Elmer%3F> > • Reply to group > <mailto:k...@yahoogroups.com?subject=Re%3A%20%5BElecraft%5D%20Who%27s%20your%20favorite%20Elecraft%20Elmer%3F> > • Start a New Topic > <https://groups.yahoo.com/neo/groups/KX3/conversations/newtopic;_ylc=X3oDMTJmOTNtODZwBF9TAzk3MzU5NzE0BGdycElkAzc0NTIwOTQ3BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDZnRyBHNsawNudHBjBHN0aW1lAzE1NTI0MjAzMzU-> > • Messages in this topic > <https://groups.yahoo.com/neo/groups/KX3/conversations/topics/65242;_ylc=X3oDMTM3bjRhMHM2BF9TAzk3MzU5NzE0BGdycElkAzc0NTIwOTQ3BGdycHNwSWQDMTcwNTA2MzEwOARtc2dJZAM2NTI0MwRzZWMDZnRyBHNsawN2dHBjBHN0aW1lAzE1NTI0MjAzMzUEdHBjSWQDNjUyNDI-> > (2) > Have you tried the highest rated email app? > <https://yho.com/1wwmgg>With 4.5 stars in iTunes, the Yahoo Mail app is the > highest rated email app on the market. What are you waiting for? Now you can > access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never > delete an email again with 1000GB of free cloud storage. > VISIT YOUR GROUP > <https://groups.yahoo.com/neo/groups/KX3/info;_ylc=X3oDMTJmczN2cGc4BF9TAzk3MzU5NzE0BGdycElkAzc0NTIwOTQ3BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDdnRsBHNsawN2Z2hwBHN0aW1lAzE1NTI0MjAzMzU-> > > <https://groups.yahoo.com/neo;_ylc=X3oDMTJlZ2c2cTZ0BF9TAzk3MzU5NzE0BGdycElkAzc0NTIwOTQ3BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDZnRyBHNsawNnZnAEc3RpbWUDMTU1MjQyMDMzNQ-->• > Privacy <https://info.yahoo.com/privacy/us/yahoo/groups/details.html> • > Unsubscribe <mailto:kx3-unsubscr...@yahoogroups.com?subject=Unsubscribe> • > Terms of Use <https://info.yahoo.com/legal/us/yahoo/utos/terms/> > SPONSORED LINKS > > > > . > > > __,_._,___ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Accessibility for the blind
Sent from my iPhone I am considering buying the KX two radio. I am blind and need to find out what software I can get that has a voice synthesizer to help me navigate this radio. Any ideas? I am an Apple iPhone and iPad user __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KX3 Utility & PX3 Utility - Future on OSX?
The present KX3 Utility and PX3 Utility are 32-bit apps on Apple’s OSX platform. Does anyone know if Elecraft plans to update these to 64-bit anytime soon? With the release of the next version of OSX later this year, those applications will no longer work in their current guise. Thanks for any insight… 73, Jeff K4EI __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] WTB KX3 2M
Does anyone have one of these in working condition that would like to sell ? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Winter Field Day report (Blazing Saddles edition)
Hey Wayne - I thought you might be sharing a chili n beans recipe with that subject line! If you ever need more of a WFD challenge, the Sierra Nevada is here for you. :D 73 jeff wk6i On Tue, Jan 29, 2019 at 5:49 PM Wayne Burdick wrote: > The "winter" weather in California over the weekend was embarrassingly > mild. Even balmy. It'll likely go down as the hottest January on record, as > last year's did, and the one before that, etc., making this hardly the > place to mount a credible WFD effort. Worse, a heavy slate of honey-dos > reduced my on-air time to just a couple of hours. So I band-hopped and > logged a dozen or so QSOs on SSB and CW. It was a bit like summer Field Day > squeezed into less spectral real-estate. > > Surely some of you have more exciting reports Polar Vortex, plague, > locusts? Grog that wouldn't thaw? Tongue stuck to icy telescoping whip? > > 73, > Wayne > N6KR > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wk6i.j...@gmail.com > -- Jeff Stai ~ WK6I ~ wk6i.j...@gmail.com Ask me about Green Keys Night - Jan 1, 2019 -2359 UTC! RTTY op at W7RN Twisted Oak Winery ~ http://www.twistedoak.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Ideas for an FT8 Radio
hi Don - Indeed. I had a line in there about being mindful of bluetooth delays but it somehow disappeared. ;) 73 jeff wk6i On Sun, Dec 30, 2018 at 12:55 PM Don Wilhelm wrote: > Jeff, > > Concept is good, but ignores the latency problem with Bluetooth. I > think that would be a "killer" for data modes like FT8 which need rather > precise timing. > > To get an idea about the latency of Bluetooth, try monitoring your CW > with a Bluetooth headset - unless you are a slow operator, the delay > (which is caused by latency) will drive you to phone operation. > > 73, > Don W3FPR > > On 12/30/2018 2:26 PM, Jeff Stai wrote: > > Hmmm... as long as you use a generic tablet with a KX2, you're going to > > have a box and wires. You could go tablet to USB box and then maybe find > > wireless solutions from there. I see there are chargeable bluetooth audio > > receivers, for example. I've never seen a simple USB wireless extension, > > however. 73 jeff wk6i > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wk6i.j...@gmail.com > -- Jeff Stai ~ WK6I ~ wk6i.j...@gmail.com Ask me about Green Keys Night - Jan 1, 2019 -2359 UTC! RTTY op at W7RN Twisted Oak Winery ~ http://www.twistedoak.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Ideas for an FT8 Radio
Hmmm... as long as you use a generic tablet with a KX2, you're going to have a box and wires. You could go tablet to USB box and then maybe find wireless solutions from there. I see there are chargeable bluetooth audio receivers, for example. I've never seen a simple USB wireless extension, however. 73 jeff wk6i On Sun, Dec 30, 2018 at 11:16 AM Doug Millar wrote: > Hi Jeff, Good ideas all around. Of course i was thinking of the KX2 and a > tablet. I actually went portable in the with that setup. What I didn't like > was all the wires and the USB box. If I could get straight from the KX2 to > the tablet with audio and rig control that might do the trick. What do you > think? Doug > > > > > > On Sunday, December 30, 2018, 11:07:48 AM PST, Jeff Stai < > wk6i.j...@gmail.com> wrote: > > > Well, since we are dreaming about things that probably won't happen...;) > An all in one appeals because it is portable, perhaps even trail ready. > > There are plenty of good mini keyboard/trackpads units already out there, > so use one of those. Since you are using an external keyboard, skip the > complexity of a swivel screen. A kickstand would be nice though. You said > all mode but it's an FT8 radio so keep it that way; you could maybe include > CW if it is easy. It will also need a stable clock... > > There are more powerful options for CPU nowadays than Raspberry Pi. If you > think ahead, this unit could have enough oomph for future digi modes. > > If it was a solder kit I'd probably be in for one. 5-10W with an option > for more watts sounds okay for that. > > Or just port WSJT-X to a tablet computer and use it with a KX2. ;) 73 and > happy new year - jeff wk6i > > > On Sat, Dec 29, 2018 at 1:27 PM Doug Millar via Elecraft < > elecraft@mailman.qth.net> wrote: > > Ok, I am going out on a limb. I have been trying to imagine an FT8 all in > one radio. How about this- A radio that is 6 by 10" or so with a screen > that lays flat on top and swivels up for use. Mouse but only and an > optional keyboard since the programs are primarily mouse driven. The > computer (raspberry pi et al.) inside the radio box. 50watts output, > 160-6m and all mode. A jack for an external monitor would be good. This > would make a very portable digital radio that only needs an antenna, dc, > and a mouse or track pad to make it work, but also have the ability to > expand for more fixed use. > What do you think? > 61, Doug K6JEY > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wk6i.j...@gmail.com > > > > -- > Jeff Stai ~ WK6I ~ wk6i.j...@gmail.com > Ask me about Green Keys Night - Jan 1, 2019 -2359 UTC! > RTTY op at W7RN > Twisted Oak Winery ~ http://www.twistedoak.com/ > > -- Jeff Stai ~ WK6I ~ wk6i.j...@gmail.com Ask me about Green Keys Night - Jan 1, 2019 -2359 UTC! RTTY op at W7RN Twisted Oak Winery ~ http://www.twistedoak.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Ideas for an FT8 Radio
Well, since we are dreaming about things that probably won't happen...;) An all in one appeals because it is portable, perhaps even trail ready. There are plenty of good mini keyboard/trackpads units already out there, so use one of those. Since you are using an external keyboard, skip the complexity of a swivel screen. A kickstand would be nice though. You said all mode but it's an FT8 radio so keep it that way; you could maybe include CW if it is easy. It will also need a stable clock... There are more powerful options for CPU nowadays than Raspberry Pi. If you think ahead, this unit could have enough oomph for future digi modes. If it was a solder kit I'd probably be in for one. 5-10W with an option for more watts sounds okay for that. Or just port WSJT-X to a tablet computer and use it with a KX2. ;) 73 and happy new year - jeff wk6i On Sat, Dec 29, 2018 at 1:27 PM Doug Millar via Elecraft < elecraft@mailman.qth.net> wrote: > Ok, I am going out on a limb. I have been trying to imagine an FT8 all in > one radio. How about this- A radio that is 6 by 10" or so with a screen > that lays flat on top and swivels up for use. Mouse but only and an > optional keyboard since the programs are primarily mouse driven. The > computer (raspberry pi et al.) inside the radio box. 50watts output, > 160-6m and all mode. A jack for an external monitor would be good. This > would make a very portable digital radio that only needs an antenna, dc, > and a mouse or track pad to make it work, but also have the ability to > expand for more fixed use. > What do you think? > 61, Doug K6JEY > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wk6i.j...@gmail.com -- Jeff Stai ~ WK6I ~ wk6i.j...@gmail.com Ask me about Green Keys Night - Jan 1, 2019 -2359 UTC! RTTY op at W7RN Twisted Oak Winery ~ http://www.twistedoak.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] CODEC
I bet Mike would appreciate getting back to his issue, which has nothing to do with VOX... Are you using a high end sound card/CODEC? If so it may just be that the internal CODEC - while quite good - is not up to snuff for this application. I'd also try using different USB cables, though that doesn't sound like it would be the problem. 73 jeff wk6i On Mon, Oct 1, 2018 at 8:49 AM, Mike Greenway wrote: > I have used for years a K3 on EME with WSJT using Line In/Out audio. > Recently got a K3S and I am now using USB (CODEC) audio in and out of the > radio. In WSJT-10 they have Rate In/Rate Out monitors that should normally > run at 1.000. Using the K3 analog audio these always stayed right on 1.000 > but now that I am using the USB audio they are jumping around quite often > and getting out of range indicated in WSJT with a red marker. I have tried > two different computers and the same result. I tried changing the sample > rate in the computer audio settings but no change in the problem. I plan > to go back to analog Line In/Out on the K3S unless someone has an idea on > how to settle down the Rate In/Out fluctuations. I have not found anything > in the K3S that might affect this. You can reply off line if you like. 73 > Mike K4PI > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wk6i.j...@gmail.com > -- Jeff Stai ~ WK6I ~ wk6i.j...@gmail.com Twisted Oak Winery ~ http://www.twistedoak.com/ Facebook ~ http://www.facebook.com/twistedoak RTTY op at W7RN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] OT - backup software
Before Eric ends the thread ;) I'll mention Backblaze. It works in the background and backs up to the cloud. And for one PC or Mac it's not expensive. And it stays out of your way and doesn't hurt performance. Other than that... keep your data organized so that it is easy to copy everything that matters periodically to an external drive (set up a calendar reminder). That software is free. 73 jeff wk6i On Sat, Sep 29, 2018 at 12:24 PM, Bill wrote: > I run Windows 10 and Linux Mint. I back up data daily to a USB-3 fast > thumb drive (by simple copying of specific directories). Once a week I > clone the drive to a spare drive. Then I use the cloned TO drive and place > the cloned FROM drive in my safe. I have three drives rotating clone > service. This prevents errors in the cloning process (I have never had a > problem). > > I use a device (from StarTech) and not software. My hard drive lives in a > plug-in bay on the computer (accessible from outside the case). > > Had many failures using software - no failures cloning. > > Bill W2BLC > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wk6i.j...@gmail.com > -- Jeff Stai ~ WK6I ~ wk6i.j...@gmail.com Twisted Oak Winery ~ http://www.twistedoak.com/ Facebook ~ http://www.facebook.com/twistedoak RTTY op at W7RN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KPA1500 FW 1.78 - no PTT response
Loaded up the beta firmware today. The PTT (key line) was dead after that. Reloading 1.64 and all was functional again. What am I overlooking? 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 - temp reading drops 10C when under power
Odds are not good there. The antennas have a balun at the feedpoint, are on a tower 500 feet from the shack and the hardline runs under ground. If there is common mode involved, it's some sort of new hyper-super-ultra-infina-deluxe type never before discovered on earth. 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com On 18-Aug-18 7:12 AM, Bob McGraw K4TAX wrote: I'd say a bit of common mode current on the feed line. I see that from time to time with my KPA500 on certain bands/antennas. 73 Bob, K4TAX On 8/17/2018 11:45 PM, Jeff Blaine wrote: While running the KPA1500 in the SARTG tonight, I noticed that the temp reading drops about 10C when transmitting. min fan speed 1. Seems to be related to power - at 1500W it's pretty close to 10C. At lower powers, it's less of a difference. I don't recall seeing that before. Normal? 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to rmcg...@blomand.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to keepwalking...@ac0c.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 - temp reading drops 10C when under power
Yea, I was on 40m also. So there's a second data point. Did not notice it before - but having watched it pretty consistently tonight, I will know what to look for on other bands. Tonight was the first night I had the chance to run it on RTTY and want to be sure the thing is ready for prime time given the CQ RTTY DX is coming up end of Sept. The good news is that the amp seemed to level off at 73C (or 63C?) and that means fan 2 was able to keep things under control. SWR is nearly 1:1 on that band and I don't know what it does on other bands but it was REALLY GREAT that fan speed 3+ was not needed. 1&2 are in a completely different sound category compared to the 3+ which sound like my company's computer server room. ha ha. 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com On 18-Aug-18 12:11 AM, Bill Stravinsky via Elecraft wrote: I noticed this problem shortly after getting my 1500 back in May. I only see this problem on 40 mtrs for some reason. I've never seen a 10 degree fluctuation but itis regularly 6 degrees and has approached 8 degrees. I only work cw for the most part. I see it all the time when the duty cycle goes up like when contesting and thatis when I start looking at the temp more often so that's how I noticed it to begin with.. I've learned to live with it, at least for the time being, for the following reason. I contacted Elecraft and talked with one of the engineers. Apparently this problem was addressed during early engineering but leave it to me to be the first one toexperience this. He explained that there might be a possible fix for it that would require installing a cap, most likely an SMD type. I would be more comfy with a discretecomponent, hi. But the jist of the conversation was that its just a touchy temp sending device. I downloaded some file from the utility program and I don't think thetrouble was exposed in the file for some reason after I sent it to them. Film at eleven. BillK3WJV. On Saturday, August 18, 2018, 12:49:55 AM EDT, Jeff Blaine wrote: While running the KPA1500 in the SARTG tonight, I noticed that the temp reading drops about 10C when transmitting. min fan speed 1. Seems to be related to power - at 1500W it's pretty close to 10C. At lower powers, it's less of a difference. I don't recall seeing that before. Normal? 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k3...@yahoo.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to keepwalking...@ac0c.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KPA1500 - temp reading drops 10C when under power
While running the KPA1500 in the SARTG tonight, I noticed that the temp reading drops about 10C when transmitting. min fan speed 1. Seems to be related to power - at 1500W it's pretty close to 10C. At lower powers, it's less of a difference. I don't recall seeing that before. Normal? 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA-1500 Efficiency
There's no way 40W drives exactly 1500W on all bands. Here's what I get into a DL (no tuner). Power measurements based on the LP100 which was calibrated by Larry last year - not what I would call a current cal but certainly better than a generic Bird. Feed with a key-down in CW, with the data taken after about 5 seconds to get a stable reading. Dont' take the values as gospel. There is at least a 50w error range. 160 1644W 80 1466W 40 1515W 20 1436W 15 1371W 10 1414W But it's definitely unrealistic to assume that the amp should have a uniform gain vs. frequency response. The gain is going to be related to many things. There is a LPF hanging off the back and it's insertion loss is a factor - and it's going to drift a touch as it heats up. Theres the front end which likly a pad. The overall gain is be in compliance with the FCC regulation. Most SS amps native gain is such that a few watts is enough to get LL output levels and I'm sure that's the case with the LDMOS even if they have a ton of NFB in the design. Plus the effects of the combiners internally which are definitely not going to be completely flat. And there is some compression that gets to be easily measurable once you hit about the KW level. And temp. And who knows what else. 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com On 15-Aug-18 10:18 PM, Paul Baldock wrote: Are you saying it took exactly 40W input on each band to produce 1500W out.. I find the gain of the amp very different from band to band. For example on 80M mine takes 32W to produce 1500W into a dummy load, and 15M it takes 47W to produce 1500W in to a dummy load. That's a variation of 1.7dB, not very flat. Also as others have reported as the amp warms up the gain decreases a little (requires a bit more drive). - Paul KW7Y At 07:40 PM 8/15/2018, you wrote: Just curious what other users of the KPA-1500 see as the efficiency reported by the KPA-1500 utility app. The following efficiencies are being report by my KPA-1500 utility app by band into a dummy load running 40 watts input and 1500 watts output: 80M CW: 61% 80M SSB: 64% 40M CW: 54% 40M SSB: 59% 20M CW: 52% 20M SSB: 52% 17M CW: 55% 15M CW: 64% 15M SSB: 62% 12M CW: 68% 10M CW: 56% 10M SSB: 58% Does this compare favorably with other KPA-1500 owners? Charles K5UA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to p...@paulbaldock.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to keepwalking...@ac0c.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3
The Yaesu 9000D indeed had two identical receivers.. 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe Subich, W4TV Sent: Wednesday, August 15, 2018 1:29 PM To: Elecraft Subject: Re: [Elecraft] K3 FTdx9000 did not have identical receivers. All of yaesu's dual receiver transceivers have a grossly inferior second receiver. In addition, the two receivers are not phase locked so they suffer from platform motion as the local oscillators drift relative to each other. 73, ... Joe, W4TV On 2018-08-15 11:18 AM, jeff griffin wrote: > I'm thinking the Yaesu 9000D was first with identical receivers... > > 73 Jeff kb2m > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don Wilhelm > Sent: Wednesday, August 15, 2018 9:03 AM > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3 > > But I believe the K3 is the first to do diversity with 2 identical > receivers. > > 73, > Don W3FPR > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k...@arrl.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3
I'm thinking the Yaesu 9000D was first with identical receivers... 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don Wilhelm Sent: Wednesday, August 15, 2018 9:03 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 But I believe the K3 is the first to do diversity with 2 identical receivers. 73, Don W3FPR On 8/15/2018 8:39 AM, Ted Bryant wrote: > So can the Orion/Orion II > > Ted W4NZ > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of K9ZTV > Sent: Wednesday, August 15, 2018 8:29 AM > To: John Harden, D.M.D. > Cc: elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3 > > Incorrect. FT-1000 30 years ago and Signal One 50 years ago. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k...@arrl.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 - adding fans
The kind of noise the amp makes is related to but a separate issue to the loudness. Last night I was doing some comparison listening while trying to find some DX on 20m and noticed that while the FAN2 setting was definitely louder than FAN1, it seems a more "pleasant" noise compared to FAN1 which tends to have some sort of a sequel-type note to the sound it makes. 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com On 10-Aug-18 1:26 PM, Jim Brown wrote: This is an excellent post, and I agree with all of it. I will add that acoustic considerations also STRONGLY affect the noise produced in any ventilation system, and it is science more than an art. The engineers who specialize in this field are called acoustic consultants, their formal training is in physics and mechanical engineering, and the acoustics specialization begins at the Masters Degree level. In my professional life (I'm long retired) I worked with professionals in this discipline in the design of sound systems and acoustics for large public spaces, where one of their concerns was making very good HVAC systems so quiet that they could not be heard in concert halls. The considerations there are same as in the KPA1500 -- the turbulence (or lack thereof) of air flow, the path, air speed, the fans themselves, vibration isolation. I do NOT recommend that users experiment with ventilation. I DO strongly urge Elecraft to retain the services of a good acoustic consultant to address complaints I've seen about fan noise. 73, Jim K9YC On 8/10/2018 10:52 AM, K8ZCT wrote: My KPA1500 is S/N 00059. I don't operate full power all the time. I live in a compromised antenna area, and so I will use the amp as required to make contacts that are difficult assuming I can hear the station well enough to have the QSO. I have not had problems with the weird display issue that has been reported, and also someone recently replaced their antenna tuner to solve a problem which I have not seen either yet. Thanks for this site, as it gives us a heads up if we would have similar issues with our equipment. Maybe I don't run the amp hard enough, my antenna will take 1500 watts, but I probably never push it that hard for long periods. I run FT8, but with 100 watts or less and I have made plenty of contacts. FT8 is whole another discussion. SSB is the least difficult for the amp to deal with. CW is harder and RTTY, FM,FT8 and AM are the worst. The fans on the power supply make some noise, but I have had several tube amps over the last 40 years that are louder. I haven't installed the latest software update issued in July, so I need to see if that makes any difference. I was involved with the design specification, and purchase of medium and high voltage transformers for my career. Cooling of electrical equipment is a little more complex than just installing fans. There are proper air flow requirements to look at in the design, so the air doesn't get short circuited, and actually hurt the process. So more air isn't always better if it is not properly applied. Transformers have RTD's or Thermocouples imbedded in the windings to measure transformer temperature, because that is the "hottest spot" of any transformer. The hot spot temperature is made up of the ambient air temperature normally 40 C maximum is used with a 30C average over a 24 hour period, and the temperature rise of the unit under load. Most electrical equipment design is based on a 40C maximum ambient but I didn't see in the manual what Elecraft considered for a maximum. Regardless, the ambient heat around the amplifier must be controlled and not trapped around the unit. An air conditioned space or proper ventilating for area is critical. If you don't remove the heat your unit will work harder and could make more noise than other units. Wayne or Eric can comment, but RF amplifiers must follow similar laws of physics. The heat sink temperature must be maintained or the devices primarily the LDMOS final amp units will fail. There are average and maximums I would assume are used in the Elecraft design. Ambient air must be kept at a certain maximum and air flows must not be restricted. At this time, it good to provide feedback to the vendor on operational concerns of the equipment, and I did plenty of that over the years. However, I usually realized there were some people, who did this for a living, and I was a consumer maybe a smart consumer, but still I didn't design transformers as my main employment. With all the KPA1500's still under warranty I don't think it is a good idea to modify or change anything with regards to the operation, and design of the KPA1500. Again, I am not Wayne or Eric, but I think you are doing it at your risk. I will wait for Wayne and Eric to come out with improvements, and updates based on customer and other inputs, but I will not modif
Re: [Elecraft] OT: Call letter license plate trivia
Years ago I was working with a catering dept at a hotel to set up a conference. I met the new manager named Kate, and it was decided to continue the meeting over lunch. We walked to where her car was parked and I noticed her Ohio license plate: K8WYT. I asked, "Oh, are you an amateur radio operator?" She said, "No. That's me. Kate White." 73 jeff wk6i On Mon, Jul 16, 2018 at 10:41 AM, Jim - N4ST wrote: > Years ago, during the 70's gas rationing in Maryland, I found I could get > gas on either odd or even days with my AA3O license plate. > > 73, > Jim - N4ST > > -Original Message- > From: elecraft-boun...@mailman.qth.net > On Behalf Of Rose > Sent: Monday, July 16, 2018 12:56 > To: Elecraft Reflector > Subject: [Elecraft] OT: Call letter license plate trivia > > Montana has a $25 vanity plate fee, regardless of what the plate "says", > -but- ham radio plates are exempt. > > BUT … I had a very difficult time convincing the local county folks that > my "K0PP" plates were -not- the usual vanity plate they were used to > issuing. It took a 200 mile trip to the state motor vehicle office with a > copy of the Callbook and the FCC Part 97 in hand to get the matter resolved. > > At the time the prison tag shop foreman was a ham. They had no slant zero > die and he made my first plate by hand with a strip of tape across a zero. > He told me I was the first "zero" plate they had made … the die they > subsequently purchased cost $97. > > Montana renews a plate with an adhesive expiration date sticker and does > not issue a new plate each year. > > 73! > > Ken Kopp - K0PP > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wk6i.j...@gmail.com > -- Jeff Stai ~ wk6i.j...@gmail.com Twisted Oak Winery ~ http://www.twistedoak.com/ Facebook ~ http://www.facebook.com/twistedoak RTTY op at W7RN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] W2 wattmeter maximum Cat5 cable length
the standard cable is not Cat5, it's just a ribbon cable with RJ45's (I think?) at each end. Cat5 should work, though, and I'd be surprised if anything less than ~50ft+ would be an issue. -- Jeff KC9WSJ On Mon, 2018-07-09 at 23:51 -0400, Dick Green wrote: > The W2 wattmeter comes with a 5-foot Cat5 cable to connect the coupler to > the display unit. I need to use a longer cable, maybe 10-15 feet. I’ve > searched the reflector archives and web for any information about the max > Cat5 cable length but haven’t found any. > > Does anyone know? Does the calibration routine in the W2 Utility > compensate for different cable lengths? > > 73, Dick WC1M __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Removing KX3 Heatsink
I run net control on our local 2m nets and enjoy using my KX3… with earphones it provides a “big rig” feel while operating. Alas, on transmit the 2-meter transverter generates a LOT of heat, very quickly, even at quite modest power levels (e.g. 0.5 watts). Trying to attenuate some of that heat, I bought Fred Meier’s, VE7FMN, Cooler KX Plus heatsink. Fred’s aftermarket design is very well-done and he inlcudes very nice stainless steel fasteners. I have an early-2017-build KX3 (serial number 9428; factory assembled) which includes the upgraded factory heatsink. Apparently, this heatsink is bonded to the case with an adhesive in addition to the four fasteners. Normally one would apply heat to soften such an adhesive. Albeit, great care is needed to ensure internal components are not damaged. Reasoning that the KX3 folds back power at ~60C, I set that as my upper limit. Using a portable dryer and a Fluke IR temperature meter I brought the stock heatsink to just under 60C/140F. Still no-go. The stock heatsink will not budge. I expect I could pry the stock heatsink off using a flat-bladed screwdriver, if I were willing to mar the case of my KX3. But not damaging the radio remains the overarching priority. Any suggestions? 73, Jeff K4YWZ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA500 installation on side?
To clarify - by "side" i mean the side that you would call the left or right side of the case - that is what i'm considering to have down. Not the face or back. Just rotating the amp 90 deg. 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com On 08-Jul-18 6:22 PM, Dauer, Edward wrote: Oops. My error. I read KPA1500, not 500. Wishful thinking on my part. Move to strike prior testimony. Ted , KN1CBR On 7/8/18, 5:16 PM, "Dauer, Edward" wrote: Just last week I sent the same question to Elecraft Support. The answer I got was yes, it can be, with two caveats. First, be sure to leave the 4 inches of free air clearance next to the top (top as in standard orientation), and don't set it so that the LEDs are on the floor. The orientation isn't odd, really. If it is resting on its right side the power switch will be on the rear, but very near the top edge. That's how mine will be, when it arrives this week --- I hope.. Ted, KN1CBR -- Message: 9 Date: Sun, 8 Jul 2018 10:56:03 -0700 From: Mark Goldberg To: Elecraft Mailing List Subject: [Elecraft] KPA500 installation on side? Message-ID: Content-Type: text/plain; charset="UTF-8" Can the KPA500 be installed on it's side? There are feet there. I want to install it in an RV and there is more room for wiring and fan air movement that way. A search did not turn up any answers. 73, Mark W7MLG __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to keepwalking...@ac0c.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KPA1500 install on side
Can the KPA1500 and power supply be mounted on it's side? 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] [KX3] Incredible 6 meter opening right now -- Western U.S.
I was just hearing someone on 50.145, not solid but some words. Then he signed and seems dead now. Sent from my iPhone > On Jul 7, 2018, at 16:38, William Johnson wrjohnso...@hotmail.com [KX3] > wrote: > > KX3 is in permanent 6M monitoring mode and ready! > > > > 72 & 73, > > Bill > > K9YEQ > > FT’er for K2, KX1, KX3, KXPA100, KAT500, W2, etc. > > > > From: k...@yahoogroups.com On Behalf Of Wayne Burdick > n...@elecraft.com [KX3] > Sent: Saturday, July 7, 2018 5:31 PM > To: Elecraft Reflector > Cc: k...@yahoogroups.com > Subject: [KX3] Incredible 6 meter opening right now -- Western U.S. > > > > > > Massive Sporadic E over Idaho. I’m hearing 10x the usual number of beacons in > the 50.060-50.080 range, and some weak SSB signals on 50.125, 50.130, etc. > Sounds like things are picking up. > > Join the fun! > > Wayne > N6KR > > > __._,_.___ > Posted by: William Johnson > Reply via web post• Reply to sender • Reply to group • > Start a New Topic • Messages in this topic (2) > > Have you tried the highest rated email app? > With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app > on the market. What are you waiting for? Now you can access all your inboxes > (Gmail, Outlook, AOL and more) in one place. Never delete an email again with > 1000GB of free cloud storage. > > VISIT YOUR GROUP New Members 8 New Photos 2 > • Privacy • Unsubscribe • Terms of Use > SPONSORED LINKS > > > > . > > > __,_._,___ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] [K3] factory upgrade to K3(s)
Or how about K3Pro with benefits :-) 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Fred Jensen Sent: Wednesday, June 27, 2018 7:13 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] [K3] factory upgrade to K3(s) Why not adopt the grammar of the Lao [and Thai] languages which have no plural forms. It would be K3S, two K3S, three K3S, one hundred K3S ... I've always thought K3S was a misteak, K3.1 would have been better ... or not. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County On 6/27/2018 3:00 PM, Bob McGraw K4TAX wrote: > Would not K3S' be the plural of K3S? > > Bob, K4TAX > > > Sent from my iPhone > > On Jun 27, 2018, at 4:44 PM, Ian White wrote: > >>> A big reduction in receiver noise floor and a huge improvement in >> both >>> transmit and receive phase noise. >> That is far too simplistic. Anyone's personal definition of "the >> better synthesizer" will depend on what range of frequency offsets >> is more important for their particular type of operating. >> >> For HF CW in particular, phase noise at small frequency offsets is >> of paramount importance and I wouldn't argue with Don's report of "a >> huge improvement in both transmit and receive phase noise" - but >> *only* in that specific context. There are also several other >> advantages that are relevant to high-performance HF CW that could >> also justify upgrading to the KSYN3A. >> >> At close frequency offsets from the carrier, the KSYN3A does indeed >> offer a large reduction in phase noise compared with the KSYN3 >> (which itself was already good). But at wider frequency offsets, >> that situation reverses. According to the ARRL review [1], at all >> offsets beyond about 6kHz, the older KSYN3 continues to have a lower >> noise floor than the newer KSYN3A "upgrade". >> >> Performance at wider frequency offsets, 10-100kHz and beyond, is of >> much greater importance in VHF-UHF contesting. This due to a >> combination of factors. The strongest signals at VHF-UHF are often >> much stronger than on HF, due to the use of high-gain beam antennas; >> and also the weakest signals are *always* much, much weaker due to >> the lower levels of natural background noise. These two features >> stretch the requirement for dynamic range on VHF-UHF far beyond >> those for which most HF transceivers are designed. >> >> Anyone transmitting wideband phase noise has a much greater risk of >> raising the noise floor of many other stations across the whole >> contesting segment of the VHF or UHF band. Running the numbers >> reveals that anyone aiming to be a Big Gun in VHF contests has a >> responsibility to keep their wideband transmitted noise floor below >> about -130dBc/Hz at frequency offsets of 50kHz and more [2]. This >> can be a major engineering challenge, and the performance of the >> transceiver is almost always the most important building block. >> >> The KSYN3A just about meets the -130dBc/Hz noise floor target at >> frequency offsets of 10kHz or more... but according to the ARRL >> review [1] the older KSYN3 achieves it much more comfortably, with >> 10-15dB to spare. >> >> I have both a K3S and a very early-model K3. The K3S (with the >> KSYN3A, of course) is used for HF contesting where smaller frequency >> offsets are important. Meanwhile the old K3 is now used as a >> transverter driver for 144MHz and above - and for that particular >> purpose there are very good reasons *not* to replace the original >> KSYN3. >> >> 73 from Ian GM3SEK >> >> >> [1] >> http://www.arrl.org/files/file/ProductReviewsForDeb/2015/pr112015.pd >> f >> >> [2] >> https://thersgb.org/members/publications/video_archive.php?id=5703 >> Sorry, this talk is accessible only to RSGB members, but in a few >> words... >> >> G8DOH runs the numbers to demonstrate that the -130dBc/Hz target >> for transmitted phase noise is necessary to avoid raising the noise >> floor of other stations many kilometres away, and also many tens to >> hundreds of kHz away across the band, whenever their high-gain beams >> happen to be pointed at each other. >> >> That calculation assumes the UK transmitter power limit of 400W PEP >> output. For the US power limit of 1500W output, keeping all other >> assumptions the same, the target for transmitted noise floor would >> need to be better than -135dBc/Hz. The older KSYN3 can still meet >> that more stringent
Re: [Elecraft] KPA500 and K3 SWR meters disagree
That's true. Especially when you let stuff sit for 6 months between uses. I need to get more of those covers 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Clay Autery Sent: Sunday, June 3, 2018 2:34 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA500 and K3 SWR meters disagree Make and break syndrome! Either there was a connector that was not fully mated even though you thought it was (something fouling a thread making it appear snug) or some oxidation/schmutz on one of the mating surfaces. I've experienced BOTH... it is maddening for sure. That's why I now put covers on ALL unused connector ends for cables/jumpers not actually in use. There's a reason the military "dummy cords" a connector cover to virtually everything. 73, __ Clay Autery, KY5G (318) 518-1389 On 06/03/18 09:58, jeff griffin wrote: > FIXED ! This morning I went through the RF jumper cables. I didn't find any > issues after taking each one out and inspecting. So I went through all the > other Elecraft supplied cables and also found no issues. So just to be sure > I make a new set of RF jumper cables out of LMR-240. Hooked everything up > and the problem is now fixed. I then tried the jumper cables I replaced one > at a time and the problem didn't return. Go figure. So I put the new LMR-240 > jumpers back on and life is once again good in kb2mland... > > 73 Jeff kb2m > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k...@arrl.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA500 and K3 SWR meters disagree
The jumpers connectors were good quality, but are very old I think I built them maybe 20 years ago. Anyway now I use better coax, and quality crimp on connectors I use either Amphenol or the DX Engineering brand which seem to me to be equal to the Amphenol brand. I'm not the type to pursue this farther, I'm not going to dissect the connectors on the old jumpers, I'm just going to throw them out. I have better things to do with my time :-) 73 Jeff kb2m -Original Message- From: Bob McGraw K4TAX [mailto:rmcg...@blomand.net] Sent: Sunday, June 3, 2018 1:52 PM To: jeff griffin Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA500 and K3 SWR meters disagree Loose or poor quality PL-259. There are many which "look good" but are not. Always snug PL-259 connectors on the SO-239 such they are a bit more than finger tight. I use/have a pair of 4" Channel lock pliers on the desk. Bob, K4TAX Sent from my iPhone > On Jun 3, 2018, at 9:58 AM, jeff griffin wrote: > > FIXED ! This morning I went through the RF jumper cables. I didn't find any > issues after taking each one out and inspecting. So I went through all the > other Elecraft supplied cables and also found no issues. So just to be sure > I make a new set of RF jumper cables out of LMR-240. Hooked everything up > and the problem is now fixed. I then tried the jumper cables I replaced one > at a time and the problem didn't return. Go figure. So I put the new LMR-240 > jumpers back on and life is once again good in kb2mland... > > 73 Jeff kb2m > > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of jeff griffin > Sent: Saturday, June 2, 2018 11:49 AM > To: elecraft@mailman.qth.net > Subject: [Elecraft] KPA500 and K3 SWR meters disagree > > I recently brought my KPA/KAT500 north for the summer and hooked up to my > trapped multiband fan dipole that I use here in NJ. I leave my K3 here for > remote use and use the amp at my winter home in Florida to use with my Flex > 6500 with a Steppir Vertical antenna without the KAT500 tuner. When I got up > here I installed the KIO3B option. The install went well with no issues, all > looked good so I connected the K3, P3, KAT500, and KPA500 with the Elecraft > provided cable set like I do every year. > > The issue I'm having is an SWR difference between the KAT500 and the K3. > For example if I use the K3's internal tuner I can on a chosen frequency > achieve an SWR of 1/1. I the put the internal K3 tuner in bypass mode and > take the KAT500 out of bypass and set to auto. I then use the xmit button on > the K3 to create a tune signal to be sent to the KAT500. The K3 then shows a > 1/1, the KAT500 about the same but the KPA500 which is in STBY mode shows > around 3/1. What this causes to happen is the Amp will fault out if I try to > use any power output. If I check the antenna with a trusted SWR meter I see > 1.3/1 at the frequency of use. I upgraded the firmware in all the devices in > use, I also did a reset of the KAT's stored frequencies memory, and checked > both the amp and tuner with the utility programs. I'm going to call Elecraft > on Monday, anyone have any ideas in the meantime I can try? > > 73 Jeff kb2m > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k...@arrl.net > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to rmcg...@blomand.net > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA500 and K3 SWR meters disagree
FIXED ! This morning I went through the RF jumper cables. I didn't find any issues after taking each one out and inspecting. So I went through all the other Elecraft supplied cables and also found no issues. So just to be sure I make a new set of RF jumper cables out of LMR-240. Hooked everything up and the problem is now fixed. I then tried the jumper cables I replaced one at a time and the problem didn't return. Go figure. So I put the new LMR-240 jumpers back on and life is once again good in kb2mland... 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of jeff griffin Sent: Saturday, June 2, 2018 11:49 AM To: elecraft@mailman.qth.net Subject: [Elecraft] KPA500 and K3 SWR meters disagree I recently brought my KPA/KAT500 north for the summer and hooked up to my trapped multiband fan dipole that I use here in NJ. I leave my K3 here for remote use and use the amp at my winter home in Florida to use with my Flex 6500 with a Steppir Vertical antenna without the KAT500 tuner. When I got up here I installed the KIO3B option. The install went well with no issues, all looked good so I connected the K3, P3, KAT500, and KPA500 with the Elecraft provided cable set like I do every year. The issue I'm having is an SWR difference between the KAT500 and the K3. For example if I use the K3's internal tuner I can on a chosen frequency achieve an SWR of 1/1. I the put the internal K3 tuner in bypass mode and take the KAT500 out of bypass and set to auto. I then use the xmit button on the K3 to create a tune signal to be sent to the KAT500. The K3 then shows a 1/1, the KAT500 about the same but the KPA500 which is in STBY mode shows around 3/1. What this causes to happen is the Amp will fault out if I try to use any power output. If I check the antenna with a trusted SWR meter I see 1.3/1 at the frequency of use. I upgraded the firmware in all the devices in use, I also did a reset of the KAT's stored frequencies memory, and checked both the amp and tuner with the utility programs. I'm going to call Elecraft on Monday, anyone have any ideas in the meantime I can try? 73 Jeff kb2m __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k...@arrl.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA500 and K3 SWR meters disagree
Hi Jack. The swr is so different between the two that there has to be a problem. I've had this setup for 3 years and never experienced this behavior. 73 Jedff kb2m -Original Message- From: Jack Brindle [mailto:jackbrin...@me.com] Sent: Saturday, June 2, 2018 4:47 PM To: jeff griffin Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA500 and K3 SWR meters disagree Jeff; Do I understand that for the first test you are driving the antenna through the KPA500 and KAT500 (with KAT500 in bypass)? If so, it makes a lot of sense that you will see different SWR. The KPA and KAT are providing a completely different load for the K3. The better test is to feed the antenna directly from the K3 without the KPA and KAT in-line. I would expect you to see a closer match at that point, although I doubt they will ever be identical due to the differences in the directional couplers in the K3 vs the KAT500 (and KPA500 for that matter). Jack, W6FB > On Jun 2, 2018, at 8:48 AM, jeff griffin wrote: > > I recently brought my KPA/KAT500 north for the summer and hooked up to my trapped multiband fan dipole that I use here in NJ. I leave my K3 here for remote use and use the amp at my winter home in Florida to use with my Flex 6500 with a Steppir Vertical antenna without the KAT500 tuner. When I got up here I installed the KIO3B option. The install went well with no issues, all looked good so I connected the K3, P3, KAT500, and KPA500 with the Elecraft provided cable set like I do every year. > > The issue I'm having is an SWR difference between the KAT500 and the K3. For example if I use the K3's internal tuner I can on a chosen frequency achieve an SWR of 1/1. I the put the internal K3 tuner in bypass mode and take the KAT500 out of bypass and set to auto. I then use the xmit button on the K3 to create a tune signal to be sent to the KAT500. The K3 then shows a 1/1, the KAT500 about the same but the KPA500 which is in STBY mode shows around 3/1. What this causes to happen is the Amp will fault out if I try to use any power output. If I check the antenna with a trusted SWR meter I see 1.3/1 at the frequency of use. I upgraded the firmware in all the devices in use, I also did a reset of the KAT's stored frequencies memory, and checked both the amp and tuner with the utility programs. I'm going to call Elecraft on Monday, anyone have any ideas in the meantime I can try? > > 73 Jeff kb2m > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jackbrin...@me.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA500 and K3 SWR meters disagree
Thanks for the reply Don. Tried that and didn't work, still have the SWR issue. Tried the amp on a resonant frequency, and it still is showing a bad SWR, but not bad enough to always fault. 73 Jeff kb2m -Original Message- From: Don Wilhelm [mailto:donw...@embarqmail.com] Sent: Saturday, June 2, 2018 1:54 PM To: jeff griffin; elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA500 and K3 SWR meters disagree Jeff, Check the coax between the KPA500 and the KAT500. Make certain the connectors are tight. Replace with a different coax if you have one. You can always do a check on the KPA500 wattmeter by connecting a dummy load to the KPA500 (no tuner). 73, Don W3FPR On 6/2/2018 11:48 AM, jeff griffin wrote: > I recently brought my KPA/KAT500 north for the summer and hooked up to my > trapped multiband fan dipole that I use here in NJ. I leave my K3 here for > remote use and use the amp at my winter home in Florida to use with my Flex > 6500 with a Steppir Vertical antenna without the KAT500 tuner. When I got up > here I installed the KIO3B option. The install went well with no issues, all > looked good so I connected the K3, P3, KAT500, and KPA500 with the Elecraft > provided cable set like I do every year. > > The issue I'm having is an SWR difference between the KAT500 and the K3. > For example if I use the K3's internal tuner I can on a chosen frequency > achieve an SWR of 1/1. I the put the internal K3 tuner in bypass mode and > take the KAT500 out of bypass and set to auto. I then use the xmit button on > the K3 to create a tune signal to be sent to the KAT500. The K3 then shows a > 1/1, the KAT500 about the same but the KPA500 which is in STBY mode shows > around 3/1. What this causes to happen is the Amp will fault out if I try to > use any power output. If I check the antenna with a trusted SWR meter I see > 1.3/1 at the frequency of use. I upgraded the firmware in all the devices in > use, I also did a reset of the KAT's stored frequencies memory, and checked > both the amp and tuner with the utility programs. I'm going to call Elecraft > on Monday, anyone have any ideas in the meantime I can try? > > 73 Jeff kb2m > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donw...@embarqmail.com > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KPA500 and K3 SWR meters disagree
I recently brought my KPA/KAT500 north for the summer and hooked up to my trapped multiband fan dipole that I use here in NJ. I leave my K3 here for remote use and use the amp at my winter home in Florida to use with my Flex 6500 with a Steppir Vertical antenna without the KAT500 tuner. When I got up here I installed the KIO3B option. The install went well with no issues, all looked good so I connected the K3, P3, KAT500, and KPA500 with the Elecraft provided cable set like I do every year. The issue I'm having is an SWR difference between the KAT500 and the K3. For example if I use the K3's internal tuner I can on a chosen frequency achieve an SWR of 1/1. I the put the internal K3 tuner in bypass mode and take the KAT500 out of bypass and set to auto. I then use the xmit button on the K3 to create a tune signal to be sent to the KAT500. The K3 then shows a 1/1, the KAT500 about the same but the KPA500 which is in STBY mode shows around 3/1. What this causes to happen is the Amp will fault out if I try to use any power output. If I check the antenna with a trusted SWR meter I see 1.3/1 at the frequency of use. I upgraded the firmware in all the devices in use, I also did a reset of the KAT's stored frequencies memory, and checked both the amp and tuner with the utility programs. I'm going to call Elecraft on Monday, anyone have any ideas in the meantime I can try? 73 Jeff kb2m __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Too Much Power
Also he did say that the JA gave him a -24 signal report. That doesn't sound like he's melting anybody's receive antennas with the 800 watts :-) 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jack Brindle Sent: Friday, May 25, 2018 7:32 PM To: Richard Cc: Elecraft Reflector Subject: Re: [Elecraft] Too Much Power I’ve seen Bill’s setup. 50 watts with a decent gain antenna (i.e. beam) is equivalent to 800 watts with Bill’s antenna and QTH. He really has done an outstanding job with the resources he has to work with. Also remember, we are talking about a 4 to 5 db difference in power here. And when you have pretty large mountains blocking your path to JA and EU, that 4db of power can make a huge difference. QTH and the antenna system really make a huge difference! 73, Jack, W6FB > On May 25, 2018, at 4:15 PM, Richard wrote: > > “I have a couple of FT8 contacts in my log -- with a DU and a JA -- reporting > me at -24 dB where I WAS OPERATING AT 800 WATTS. YMMV.” > > Why do you think you need 800 watts in a weak signal mode? Do you have any > idea what that does to other operators? I’ve made several 10,000+ mile > contacts with 50 watts, as have others who are following the “rules.” __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] New antenna?
That's what I was wondering...is it the AX1 or something different? On Sun, May 20, 2018 at 8:08 PM, rich hurd WC3T wrote: > You mean the AX1? :) > > On Sun, May 20, 2018 at 18:54 Wayne Burdick wrote: >> >> Stay tuned :) >> >> Wayne >> N6KR >> >> >> > Jeff Kinzli N6GQ wrote: >> > >> > What's this I read about an Elecraft portable antenna at Dayton? >> > >> > #curious. >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to r...@wc3t.us > > -- > 72, > Rich Hurd / WC3T / DMR: 3142737 > PA Army MARS, Northampton County RACES, EPA-ARRL Public Information Officer > for Scouting > Latitude: 40.761621 Longitude: -75.288988 (40°45.68' N 75°17.33' W) Grid: > FN20is > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] New antenna?
What's this I read about an Elecraft portable antenna at Dayton? #curious. 73 de N6GQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KX3 - Duty Cycle of 2M Transverter?
Curious if the duty cycle of a stock (no aftermarket heat sink) KX3 differs when transmitting over the 2m transverter, versus keying up on the HF side of the rig? HF can go as high as 15 watts, of course, whereas the 2m transverter maxes out at 3 watts. One might imagine that the very modest 2m output would translate into an extended duty cycle, but that has not been my experience. When transmitting, the 2m module rises in temp quite rapidly, to the point that I now monitor PA temp on the display when running our local VHF net. Backing down to 1 watt helps, but at an obvious price. I’d be interested in any thoughts anyone has on the thermal relationships at play here. 73, Jeff K4YWZ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX3 Internal Batteries
Thanks for all the suggestions. Batteries ordered and on the way. Much appreciated! 73, Jeff KE9V On Wed, May 9, 2018 at 10:51 AM Walter Underwood wrote: > Yes, Eneloop Pro. > > wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) > > > On May 9, 2018, at 7:29 AM, Grant Youngman wrote: > > > > Panasonic Eneloop Pro … > > > > > > Grant NQ5T > > K3 #2091, KX3 #8342 > > > >> On May 9, 2018, at 10:18 AM, Jeff Davis wrote: > >> > >> It's time to initiate the three-month old KX3 into the great outside. > >> > >> Recommendations for internal batteries appreciated. > >> > > > > __ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft@mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to wun...@wunderwood.org > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to stuck...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KX3 Internal Batteries
It's time to initiate the three-month old KX3 into the great outside. Recommendations for internal batteries appreciated. Thanks. 73, Jeff KE9V __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KX3 Digital Voice Recorder (DVR) Truncating Messages
My KX3 was purchased new just over a year ago. Great rig! Of late, however, the Digital Voice Recorder (DVR) has been truncating messages. Upon playback, some amount of the message will be clipped, with the transceiver immediately exiting playback mode. The amount of truncation varies from playback to playback. And it occurs in both memory channels. Recording a new message seems unventful, with the 15-second countdown timer doing its thing while you record your message. Recording a fresh message does not fix the playback problem (as, for instance, if it was one-off instance of corruption of the flash memory channel). Albeit, a freshly-recorded message will sometimes play the complete message a time or two before it begins to truncate subsequent playbacks. MCU 2.90 DSP 01.52 Any thoughts? 73, Jeff K4YWZ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Wd8kni
I have Sad News to report this week, We lost Wd8kni Fred Moore on Tuesday the 17th he was a Great Friend and will be missed by all. W4TEK Jeff K Sent from my iPhone __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Migrating a KPA3 POWER module to a K3S
I know Elecraft does not recommend bringing in a KPA3 from a K3 to a new K3S, but has anyone done this and how does the rig perform? Sent from my iPad Sent from my iPad __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Appropriate DXE sequencer delay times for NCC-1, receive preamp, K3, KPA500
Setting up a DXE NCC-1 noise/phasing unit with my K-line and a simple amplified receive (noise) antenna and need to confirm the right delays for the various parts of the system. Here are the typical delay times indicated for the DXE TVSU-1 sequencer for solid-state gear: PTT: 10ms (VOX will never be used as per the DXE manual) CW: 10ms (won't be using CW mode except for tuning up) I operate SSB only. AUX: 0 ms (T/R switching) PREAMP: 20ms (using a DXE RPA-1 with 102" vertical wire) LINEAR: 16ms (is this fine for the KPA500?) The receive (noise pickup) antenna will be more than 1/10th wavelength from my closest xmit antenna and actually close to 1/4 wavelength away but I often run 600 watts to both of my HF verticals. If anyone knows the best or recommended delay times for Elecraft gear I'm all ears---hope to get this up and running before the CQ WW this weekend. 73, Jeff, NH7RO __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K3S sales
Just wondering if the low power K3S kit with extra filters etc is offered as a special? Seems they usually have the 100W factory combos. Sent from my iPhone __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KX3 to MacBook Pro Interface
Curious what others are using for a USB interface from the KX3 to the MacBook Pro with all USB-C ports. 73, Jeff KE9V __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] [KX3] Re: Elecraft KX2 compared with the latest "Ultra Portable" (?)
What I would like to see is a dual band module for the KX3 that would provide all mode 2 and 70cm. That is what I miss with the 817. I built a compressor board that fit in the case, but I like the tuner and extra power of the KX3 for HF and 6. Sent from my iPhone > On Mar 1, 2018, at 17:24, Jim Low man jmlow...@sbcglobal.net [KX3] > wrote: > > Trust me, Kevin, Wayne call tell you that I’ve bugged him in the past for an > all-mode, stand-alone transceiver for the 6m, 2m, 222 MHz and 432 MHz bands. > > > I made the point that they have the technology, since they have sold > transverters for those bands for some time now; just put it all in one box. > Of course, that’s probably an oversimplification. > > His reply in the past was that there probably isn’t the market out there for > such a transceiver, which makes sense to me. > > __,_._,___ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] WTB: K3 for neighbor SWL - damaged TX preferred
My neighbor is a SWL and when I'm on the radio it pretty much crushes his little table top RX. As a way to preserve neighboorhood harmony, I'm looking for a radio with a tough front end that would alievate his problem to an extent. So I was thinking a great solution would be an old K3 that works OK on RX but has an inoperative TX. I guess the ideal config would be the AM filter, general coverage RX and a broken TX section. If you have something like that on your shelf and it needs a new home, please contact me directly (off the reflector). 73/jeff/ac0c alpha-charlie-zero-charlie www.ac0c.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Who would spend 30 hours+ building an Elecraft K2? (plus: special pricing)
I've built two K2s. The second one was serial number 1250, which at the time was my street address. Nice catch. ;) When it came time to prepare to evacuate from the Butte Fire a couple years ago, after the usual essentials were packed, the K2s went in the car next. Wayne, when we gonna get another K2-level kit? :) 73 jeff wk6i -- Jeff Stai ~ wk6i.j...@gmail.com Twisted Oak Winery ~ http://www.twistedoak.com/ Facebook ~ http://www.facebook.com/twistedoak RTTY op at W7RN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 Review on eHam
On Sun, Jan 14, 2018 at 3:51 PM, John Klewer wrote: > I wonder if I could sell one of my children and buy one? > > Nah > > Oh Well > > Oh come on, I know some of your kids and they would fetch top dollar. ;) 73 jeff wk6i -- Jeff Stai ~ wk6i.j...@gmail.com Twisted Oak Winery ~ http://www.twistedoak.com/ Facebook ~ http://www.facebook.com/twistedoak __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] IC-7610 added to Sherwood's list
We all can look forward to the 7610PRO, whatever that means. What an unbelievable amount of hype proceeded the release of this transceiver... 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike VE3YF Sent: Sunday, December 24, 2017 7:20 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] IC-7610 added to Sherwood's list Don: I wonder if this is a result of rushing the rig to market instead of getting things correct first. -- *73 De Mike* *VE3YF _/http://www.ve3yf.com/_* __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k...@arrl.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com