Re: [Elecraft] K3 goes deaf when set to 12W or more
I had a similar problem years ago. Apparently a not-close lightning bolt damaged the tx protection. Elecraft Tech Support was very good in the diagnosis and suggested I could do the repair but my skills are from the vacuum tube days so I sent it back to Elecraft for repair. I suggest you contact Elecraft support. Good luck, Ken WA8JXM On Mon, Sep 16, 2024 at 9:34 AM Martin Schmiedel wrote: > Elecrafters, > > K3 #8862 , goes deaf when i set power to more than 12W . XMIT (TUNE) > will not output power if TUN PWR is set to more than 12W. > > I hear a relay click ( KPA kicks in) when power setting transitions from > 12W to 13W and rx is gone. It seems to work normal when PWR is less than > 13W (aka the 10W PA is in use) . > > > Where to look? > > Thanks. > > Martin, DM4iM > > > > > __ > 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 wa8...@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] Some NOS Elecraft Acrylic Plates (from my engraving business)
Hi guys. I have a few acrylic plates (NOS Elecraft) for my engraving business some of you may remember (Arkay Engravers). For a few years I custom engraved callsigns and serial numbers on original Elecraft plates. Well, I still have a few kicking around and I'd like to sell them. Here is the list: E100392 KPA500 LCD Bezel Qty 2 E100080 K2 Bezel Qty 1 E100195 K3 Bezel Qty 1 E100403 KX3 Bezel Qty 1 E100566 K3S Bezel NOTE:Elecraft webpage show this as E100557SS_K3S FRONT PANEL, SILKSCREENED Please contact me OFF THE LIST at wb2art (AT) gmail.com if you are interested. 73 Ken WB2ART The Villages, FL __ 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 distorts transmit signal in Bypass
Hi Everyone, I have a KPA500 SN 4414 that I use with a Flex 6600 and an upgraded K3. I’ve started getting reports of dirty signals when I use the KPA500 at >200 watts with either rig. The problem is there at lower power it turns out, but I guess it’s not bad enough to get complaints. I did some testing, swapping, checking cables… If the KPA500 is switched OFF, the signals pass through and look good to me on a separate SDR. I’m using a dummy load for testing and use various power settings. As soon as I switch the amp ON, even in bypass I see tons of spurs when transmitting at various power levels (even down to just a few watts). Doesn’t matter if I’m using the Flex or the K3. Turn the amp to operate and the same thing, just bigger signal. Turn the KPA500 off and the signal from the Flex or K3 looks good again. So… I’m hoping someone has seen this before and that it’s something I can fix without shipping this back to Elecraft. Any ideas? Thanks & 73 de Ken NS7V __ 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 metering
Check the KPA500 manual. From memory, the max throughput in standby is 200W. As I say, check my memory against the manual. *Ken* *WA2LBI* On Wed, Apr 3, 2024 at 6:36 PM Mike Murray wrote: > If a KPA500 is in standby, can it be used to determine power output from > another amp by feeding the signal thru the KPA? I don't currently have an > external power meter I can utilize to check output of an SB200, but I also > don't want to risk damaging the KPA. > > 73, > Mike - W0AG > __ > 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 wa2...@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
Re: [Elecraft] KAT 500 Loses Match
David, True but IIRC I was replying to a message where he said the SWR was flat through 6m. Usually, somewhere between 20m and 6m, receive losses do count. Ken WA8JXM On 1/14/2024 4:33 PM, David Woolley wrote: The receive part of the penalty, from a lossy antenna, only applies if the dominant noise source is after the point of attenuation. That's not generally true at HF. (I wonder if, at microwave frequencies, it is possible to use circulators and isolators to put passive losses in on only the transmit path.) __ 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 Loses Match
Unless its something like a log periodic, I think anything with those frequency/SWR specs can only do it with high resistive losses. It reminds me of the HF dipole B&W makes for the military: it is designed to appear to have a low SWR by having 3 db of resistive losses. The military considered that an acceptable design. Remember, antenna losses affect TX and RX, so that's 6 db system loss. Ken WA8JXM On 1/13/2024 2:37 PM, Walter Underwood wrote: The C HA-50HD is rated for 250 W SSB or 75 W for digital modes. It gets a flat SWR with resistive losses in the transformer. That is why the transformer has heat sink fins. A KPA500 is almost certainly overheating the transformer and causing failures. I would back off the power to match the ratings. For SSB with compression, I would run less than 250 W, maybe 150 W. It is possible that overheating has caused permanent damage to the transformer. One detailed set of tests showed at least 75% of transmitter power being turned into heat in the transformer. Here is what Comet says about that antenna. CHA-250HD (New version of the CHA-250B) The Comet CHA-250HD is the revised CHA-250B. The top section of aluminum has been replaced with a solid whip for greater flexibility and less strain on the lower sections in high winds. A uniquely designed broadband vertical requiring NO GROUND RADIALS. This is EXTREMELY easy to assemble, requires no tuning or adjustments and VSWR is under 1.6:1 continuously from 3.5MHz – 57MHz! It is not a 1/4 wave vertical, but an end-fed long wire type antenna with a matching transformer in a vertical position. Broadband: TX 3.5 – 57MHz RX 2.0 – 90MHz VSWR: 1.6:1 or less Max Power: 250W SSB 75W Digital modes/FT8, etc… CHA-250HD Transformer Section This is a the “magic” behind the CHA-250HD, the transformer matching section. The transformer on the original CHA-250 had smooth sides. The current version has a heat sink to dissipate heat created inside the transformer. Yes, some of the RF that enters the power feeding section is turned into heat rather than transmitted as RF, but that is one of the compromises needed to create a broad-band, low SWR, multi-band HF antenna with minimal visual impact. https://cometantenna.com/amateur-radio/base-antennas/multi-band-hfvhfuhf-2/ 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 arch...@mail-archive.com
Re: [Elecraft] KAT 500 Loses Match
Your situation sounds like 1) something is heating up and changing value or 2) something is arcing and changing value. Are you using a balun or choke that is underrated? Ken WA8JXM On 1/13/2024 12:28 AM, Michael Reynolds, NO6O wrote: Greetings, I joined this list today, after sending a message to Elecraft support, describing a similar problem. I have an Icom IC-7610, with the KPA500 and KAT500, and my SWR spontaneously climbs into the red sometimes during transmissions. It takes some effort to correct it, and I typically lose a QSO in the process. The relays go nuts trying to re-tune, and sometimes produces a fault condition. Usually, I can correct it by restarting both the amplifier and tuner. I have a Comet CHA-250HD, which has a almost a flat 1.1 SWR from 80m to 6m. I don't need a tuner while barefoot. However, when I first hooked up the KPA500, the SWR was not flat, and added the KAT500 this week, which led to my SWR issue. I hope the cause and resolution can be determined. Michael NO6O m __ 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 Loses Match
It's possible that something is arcing and, of course changing the tuning. Do you have the internal tuner in the K4? If so, does it behave the same way? Why do you have the amplifier running? 30m is as restricted power band. If you leave the amp and tuner out of the circuit and transmit with the K4 directly, does the SWR meter stay steady, or does it fluctuate at full power? Ken WA8JXM Why is the amplifier connected? 30m is a restricted powerband. On 1/12/2024 4:46 PM, Paul Ecker wrote: I am experiencing a new problem for me, with my KAT 500. So far I've noticed this issue on 30M. I am using a dipole cut only for 30M with an SWR of 1.2 to 1.3 max SWR across the band. I “trained the tuner” at 20khz segments on 30M. Setup is K4D, KAT 500 & KPA 500. Win 10 pc. Running CW, I can start transmitting and all is fine- my LP100A is showing 1.2 SWR and am getting max power out of the radio. Then all of sudden the SWR jumps to >9.0. The KAT starts chattering and finds a new match. But if I start transmitting again – pwr out is only about 10 W at that new match, and eventually the tuner becomes untuned again. Sometimes, it will then hold the tune but still only getting abt 9-10w power out. The issue occurs with KPA500 both on and off. Does this sound like a KAT 500 problem or maybe an RFI problem. 73 Paul w2eck __ 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 Loses Match
Paul, Connect a dummy load in place of the antenna and repeat your testing. This will eliminate the antenna as a possible source of RFI. Report the results of your tests, GL! *Ken* *WA2LBI* On Fri, Jan 12, 2024 at 4:47 PM Paul Ecker wrote: > I am experiencing a new problem for me, with my KAT 500. So far I've > noticed this issue on 30M. I am using a dipole cut only for 30M with an SWR > of 1.2 to 1.3 max SWR across the band. I “trained the tuner” at 20khz > segments on 30M. > > Setup is K4D, KAT 500 & KPA 500. Win 10 pc. > > Running CW, I can start transmitting and all is fine- my LP100A is showing > 1.2 SWR and am getting max power out of the radio. Then all of sudden the > SWR jumps to >9.0. The KAT starts chattering and finds a new match. But if > I start transmitting again – pwr out is only about 10 W at that new match, > and eventually the tuner becomes untuned again. Sometimes, it will then > hold the tune but still only getting abt 9-10w power out. The issue occurs > with KPA500 both on and off. > > Does this sound like a KAT 500 problem or maybe an RFI problem. > > > 73 Paul > > w2eck > __ > 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 wa2...@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] SOLD.......QRPGUYS 40-10m UnUnTenna and Tri-Band Vertical Antenna
SOLD..Thanks all..Ken Hi all, Have the two subject unused/assembled QRPGuys items for sale. Unassembled they're $30.00 each not including shipping. Both are in new condition. Outside only to test. Full set-up/operating information is available in the qrpguys.com web site. Several photos on request. No wire included. $45.00 for both shipped CONUS only. Shipping prices are out of site now. PayPal, friends/family, Zelle, Postal Money order or a cleared personal check are all ok. Thanks for looking, Ken, W2GIW __ 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 KXPD3 Keyer Paddle Assembly
Hello all, I have a hardly used 2019 subject paddle. Maybe used for 15 minutes at one time. The alternate springs (light and firm) are still in their sealed manila envelopes, including the Allen wrench. The medium weight spring (E980240) is installed as received from Elecraft. Can send photos on request. $170.00 shipped to CONUS. PayPal, friends/family, Zelle, Postal Money order or a cleared personal check are all ok. Thanks for looking, Ken, W2GIW __ 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] Noise from KAT500?
Eugene, This may or may not address your issue but the KAT500 user manual reports that a signal may be heard from an oscillator in the unit. The manual advises that this can be shut down when not in use by running the KAT500 Utility. Below is the reference to Idle Sleep in the manual. *Idle SleepIn some installations a 28004.5 MHz signal may be heard from an oscillator in the KAT500. If this is an issue, you can cause the KAT500 oscillator to shut down when it is not needed. Click on Idle Sleep to put a check in the radio button. The oscillator will stop running shortly after the last key press or the last data communication with other equipment and restart automatically when needed.* *Ken* *WA2LBI* On Sat, Dec 2, 2023 at 5:14 PM W2HX wrote: > Hello all, > > I have my new (to me) KAT500 up and running but I am noticing it is > introducing quite a lot of noise when "inline" but the noise is gone in > "bypass." > Here is a video I made of the situation. The video shows the issue on 60m, > but I will note, that I also checked the situation on 20m and it is the > same. The problem is significant and might prohibit me from using the > KAT500. > > Anyone know what might be going on? > https://youtu.be/5EvByZDYI3g > > > 73 Eugene W2HX > Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx/videos > > __ > 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 wa2...@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
Re: [Elecraft] Headset Hubbub
#1, contact Amazon customer service and inform them what you reported here. Some years ago I had a similar situation with a Baofeng handheld, it came with frequencies programmed in it. Amazon was not happy and immediately issued a refund. Years ago I bought the CM-500 and a Logitech gaming headset at a much lower price. (For my K3 and Flex-6300). They both worked very well on both rigs and I received similar audio reports. The headset padding did not last as long, but considering it was 1/3rd the price of the CM-500, that was acceptable. Logitech Stereo Headset H110, Standard Packaging, Silver $16.81 Ken On Thu, Oct 12, 2023 at 1:01 AM Richard wrote: > I ordered a Yamaha CM-500 from Amazon but it came through some other > company after waiting eight days and there were problems. > > 1. The original factory packaging was gone. > 2. It came wound in bubble wrap, then stuffed into a cardboard box that > had been cut down from a larger box and taped together. > 3. There was no manual. > 4. The mic was dead. > > I’m betting it was a DOA return item that was then sent out to me thinking > I wouldn’t notice or I’d think returning it was too much trouble. > > On top of that, they’ve been out of manufacture for quite some time so all > that the stores have are the dregs. > > So now I open again for other suggested headsets in the $100 range. The > CM500 was a gaming headset so that could be a source. This is going to be a > gift for a friend who badly needs something. > > Any more ideas? > > Cheers. > > Richard Kunc > W4KBX > > flat...@comcast.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 wa8...@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
Re: [Elecraft] Digital mode power handling for KAT3
Not just the tuner, the K3 is not rated for full power on 100% duty cycle modes. Just like it's not rated or 100% key down CW. But realize that many of the modes are half transmit and half listen. Different digital modes have different duty cycles. From the W1HKJ.com website: 100% duty cycle: Olivia, MFSK,RTTY 80%: BPSK, MT63 44% CW 22%:FieldHell There are more modes on Dave's website, but those are some of the major ones. IDK if Joe Taylor has similar information on his website for the modes he supports. It loioks like his modes may require full duty cycle. Ken On Wed, Oct 11, 2023 at 12:51 PM wrote: > Hello. I recently bought a very nice K3 from a friend. It has the KAT3 > auto-tuner installed. Due to the duty cycle of most digital modes, most, > if > not all, external auto tuners are "de-rated" for digital modes. I haven't > been able to find any reference to this for the KAT3. Does anyone know the > power handling capability of the KAT3 for digital modes? > > Thanks in advance. > > 73, > Ken, KJ9B > > __ > 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 wa8...@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] SOLD.......Sale......KXIO2 Board for the KX2
Hi all, have the subject board for sale. A pull-out from my KX2. Working fine. $45.00 shipped CONUS. Zelle, PP FnF, MO, cleared Personal Check, Bank Cashier's Check. Thanks, Ken, W2GIW __ 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] For Sale......KXIO2 Board for the KX2
Hi all, have the subject board for sale. A pull-out from my KX2. Working fine. $45.00 shipped CONUS. Zelle, PP FnF, MO, cleared Personal Check, Bank Cashier's Check. Thanks, Ken, W2GIW __ 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] KX2 with KXIBC2, Firmware 3.02.
Hi all, Installed the subject charging board yesterday. Page 5 in the manual says "Tap DISP and rotate vfo B until you find the "VBAT" display. All I can find is BT and PS. No VBAT? KXIO2 = Not INST. KXIBC2 = NOR. BT = 11.9V now PS = 14.1V now LED is on. Thanks, Ken, W2GIW __ 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 Antenna Selection Problems
A better solution than my two band change workaround would be to write some software to read UDP radio info messages from rig control software (in my case, either N1MM+ or DXLab Suite Commander) and issue BN commands to the KAT500 through its serial port connection. No need to write additional code, DXLab already has that functionality ,On the PORTS setup, there is a secondary serial port that you can direct to the KAT500 \ Ken WA8JXM __ 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 Antenna Selection Problems
I have had that problem in the past. Have you tried a 'reset configuration"? On Thu, Aug 3, 2023 at 12:44 PM Paul Ecker wrote: > In the KAT 500 Utility – Configuration- Antennas- Band- 17M; > > I have Antenna 3 checked as Enabled and Antenna 3 as Preferred. No other > antennas are selected for 17 m. This configuration has been applied and > saved. Setup is Flex 6600, KAT500, KPA500 & win 10 pc. > > The problem I am having is: with radio on 17 M, when I run a “tune” > sequence, the KAT does not switch to Ant 3, in fact it will not let me > manually switch to ant 3. I occasionally have the same issue with the tuner > not switching on other bands, to the selected antenna as set up in the > utility. > > Any suggestions on what may be causing this ? > > > 73 Paul > > w2eck > __ > 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 wa8...@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
Re: [Elecraft] A dumb question about lightning
Geoff, I certainly understand your "do it right" approach...the impossible: 8 ft ground rods -- I have bedrock at 36-42". When I put the tower up, I tried. I rented a heavy SDS hammer drill and, despite hours of trying, never got deeper than 5 ft. And what good is a single, shallow rod in rock? "Lower the antenna to the ground when a storm approaches." I'm not going out at 2 a.m. to fool with antennas. With frequent storms,I might as well leave the antennas on the ground except when operating. Not worth the time and effort to pull them back up for an hour of operating. Too much of a mess and tangle to leave them on the ground, I'm talking 60,and 80 and 40m antennas, support lines, coax, etc. Tangles. I don't operate that much, and it would not be worth all the hassle. Technically I know you are right. From a practical standpoint, it's probably time to turn in my license and sell the equipment. (My Novice license was issued 60 years ago.) Solutions have to be practical. Quitting the hobby is the only practical solution I see. 73, Ken WA8JXM On Mon, Jul 31, 2023 at 10:57 AM Geoffrey Feldman wrote: > > > First thing and foremost - switches are mostly not relevant to protection. > Energy that can travel 1000' through the sky is likely to continue across > most switches. So, the utmost of safety is what you indicated you did - > disconnect. By disconnect, I mean either disconnect outside the building, > leaving the feed on the ground or leave the feed connected to a copper > plate > that is in turn connected to an 8' deep ground stake. On the inside of the > house, disconnect the lines from that plate and leave them on the floor. > Another such stake near the feed point of the antenna is also a great idea. > If it's possible to lower the antenna when not in use, that's a great idea. > This should be the default when not in use. > > > > You have the belief that no grounding system is perfectly effective (for > all > imaginable strikes) - maybe, but a good grounding system is far better than > foolishness. A grounding system, or an antenna is not a "lightning > magnet". If it doesn't strike it won't. If it does it will and the > grounding > system assures the energy will be less likely to cause harm. Some places > and > circumstances are more or less likely but everywhere is possible. If that > possibility happens, a good grounding system is why it is likely to be > survived. > > > > A key thing to understand is that when Lightning strikes in nature, all the > energy travels along the surface of the ground. It can do this for many > feet and be lethal doing it. Anything that stands along the radius from > the > point of the strike (one part closer and the other further) is in danger. > Four legged animals, having more distant contact points, more dangerous. > The purpose of a ground stake (8' straight down) is to channel the > electricity deep, rather than along the surface. > > > > Don't use emotional theories. Read the lightning mitigation and grounding > books offered by the ARRL. Use UL approved conductors and stakes. Do not > use your homes electrical service ground stake. Keep that separate. > > > > All the above is a "cliffs notes" and so is anything else posted here. Read > the books. Ask senior members of a local club, to review your plan. > > > > W1GCF Geoff > > __ > 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 wa8...@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
Re: [Elecraft] [OT] A dumb question about lightning
Protecting your equipment goes beyond a direct strike. I had an element in my K3 transmit final wiped out by a lightning strike a good distance away. I wasn't on the air at the time but I remember the strike. This was through a pair of Alpha-Delta switches. Sometimes I miss "the good old days" of vacuum tube rigs when I operated during thunderstorms ;-) Ken WA8JXM On Fri, Jul 28, 2023 at 7:31 PM Ray Maxfield wrote: > I worked a Number of Years as a Broadcast Engineer. > The Broadcast Industry has Put this one to bed years ago. > No Need to re-invent the Wheel. Yes, it will Cost some Dollars > to do it Right, but it can save YOUR Equipment. > Ray WA6VAB K3 > > > On Fri, Jul 28, 2023 at 3:51 PM Rick NK7I wrote: > > > We're in accord on static. Like lightning, give it someplace to go > > OUTSIDE, not via the shack/structure. Not just for noise but the > > voltages can be astoundingly high with enough amperage to cause harm. > > > > [A local puts his feeds in a glass jar then is amused at the glow of > > discharge, contained. But that is FAR from the only wire exposed. > > > > These are complex topics that few can translate well to low dollars > > (hams) and better understanding. > > > > It would have been fun to draw on that lunch crowd discussion. > > > > The only true axiom is that if you don't have enough shunting, lightning > > will be happy to show you what you missed. (Antenna didn't fall over? > > It's not big enough!). > > > > 73 Bill, > > Rick nk7i > > > > > > On 7/28/2023 3:36 PM, Dr. William J. Schmidt wrote: > > > I worked at Honeywell defense systems in the early 80's and I had two > > guys (Ph.D's from MIT) working in the office next to me that were experts > > in Meteorology... specifically the study of lightning. I would eat lunch > > with them because they were "interesting" to say the least. When they > > found out I was a ham and asking them about lightning protection they > > laughed hysterically. Over their tenure they schooled me on my lack of > > knowledge in their area and beat into me immense gravity and consequences > > of a major lightning strike. Imaginable voltages and currents. You can > > prepare but you will never be sure. > > > > > > Static is something else. All of the antennas I design and implement > > have GROUNDED elements or static chokes to ground to reduce static to a > > minimum. You learn this with experience. > > > > > > > > > Dr. William J. Schmidt - K9HZ J68HZ > > > > > > > > > -Original Message- > > > From: elecraft-boun...@mailman.qth.net < > elecraft-boun...@mailman.qth.net> > > On Behalf Of Rick NK7I > > > Sent: Friday, July 28, 2023 4:42 PM > > > To: elecraft@mailman.qth.net > > > Subject: Re: [Elecraft] [OT] A dumb question about lightning > > > > > > Not often (enough) does a ham have a 100'+ tower either. 😉 > > > > > > THE standard (of way so many to choose from) is from the cell phone > > industry (Motorola mostly). It's insanely complex but if you're on a > > mountain top and need 100% reliability; ideal. The costs, will be a > second > > mortgage so some compromises will have to happen. > > > > > > Here is a better link to the current (newest edition) of the ARRL book; > > at least a good starting point for a baseline understanding. Direct > hits, > > no matter what system/s used, will always show what you missed or didn't > do > > enough to mitigate. > > > > > > https://a.co/d/01vRC1W > > > > > > Another aspect is static reduction. That comes from wind, rain, dust, > > snow, anything that passes by the structure. Shunt all to ground OUTside > > the building is the best approach. (Base of the tower/mast and again at > > structure entry; make EVERYTHING at the same ground potential, inside and > > out. When you take a hit, that potential rises, equally if all is done > > well; it's the difference in potential that harms.) > > > > > > 73, > > > Rick nk7i > > > > > > On 7/28/2023 2:31 PM, Dr. William J. Schmidt wrote: > > >> Even the methods in that book are considered sub-standard by the > > broadcast industry... The only think that is a sure bet is to completely > > disconnect your radio and put it back in the shipping box. > > >> > > >> > > >> Dr. William J. Schmidt - K9HZ J68HZ > > >> > > >> email: b...
[Elecraft] For Sale...Penntek TR-35 QRP CW Transceiver...... REV A
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[Elecraft] For Sale.....Kenwood HS-5 Communication Headset
Hello all, I have a never used, Kenwood HS-5 Communication Headset. Normally $99.00 at DX Engineering, not including shipping. $70.00 shipped from here. >From a close friend who took ill before he could use them. About a year old. Photos available. Postal Money Order, Bank Cashiers Check, "Cleared" Personal Check or Zelle ok. Zelle preferred. PayPal has been causing problems so I need to stay away from it for a while. Please use just the "QRZ.COM" e-mail address for communication. As usual, no returns/refunds for all the usual reasons. Thank you for reading! Please be safe! Ken, W2GIW. __ 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] Kenwood HS-5 Communication Headset
Hello all, I have a never used, Kenwood HS-5 Communication Headset. Normally $99.00 at DX Engineering, not including shipping. $70.00 shipped from here. >From a close friend who took ill before he could use them. About a year old. Photos available. Postal Money Order, Bank Cashiers Check, "Cleared" Personal Check or Zelle ok. Zelle preferred. PayPal has been causing problems so I need to stay away from it for a while. Please use just the "QRZ.COM" e-mail address for communication. As usual, no returns/refunds for all the usual reasons. Thank you for reading! Please be safe! Ken, W2GIW. __ 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] For Sale...Penntek TR-35 QRP CW Tranceiver
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[Elecraft] MH-3 hand microphone
After a long wait, finally received my MH3. Thank you! Ken K7BXI __ 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] TL-922
Be careful with the TL-922. An unmodified TL-922 has about 100VDC on the keying line. I'm not familiar with the K3 so I don't know if its keying circuit can handle that voltage/current. I would check the K3 manual for its keying circuit specifications and also measure the TL-922 keying line voltage. You may need a keying line buffer (small relay or solid state high voltage transistor) between the K3 and the amp. *Ken* *WA2LBI* On Wed, Mar 29, 2023 at 4:05 AM Jim Brown wrote: > On 3/29/2023 12:02 AM, Josep Torres via Elecraft wrote: > > Have a couple of Kenwood TL-922’s around and was thinking to connect one > to a K3. > > Hi Josep, > > I don't know that amp, but I've got K3s that I've used with both > Elecraft and non-Elecraft amps -- three different Ten Tec models, an > ACOM, and an Expert. In all cases, it was a matter of figuring out what > pin on what connector puts the amp in TX mode, and using the Power > setting on the K3 to set drive level. For all of those amps, a simple > through cable from the K3 Key Out jack to the amp Key In worked. In > general, the manuals for both K3 and the amps are our friend. > > You've got a great station -- I'm near San Francisco, and we've worked > on CW on 160, 80, and 10! Not an easy path. > > 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 wa2...@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
Re: [Elecraft] warranty
I had a KPA500 issue 5 months after purchase. I took out the coil (the heavy part) and paid for shipping back to the mother ship. They fixed it really fast and sent back at no charge. Could not be more pleased with their service. On Monday, August 1, 2022 at 03:52:30 PM EDT, wrote: I have a two month old KPA 500 that needs warranty service and I was wondering if anyone else has been expected to pay shipping to get their equipment repaired under warranty? I am a 78 year old on SS and don't believe I should have to pay to have a defective unit for repair. I would appreciate any comments. Rich KB9RP __ 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 backhoe...@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 arch...@mail-archive.com
Re: [Elecraft] switchbox KX3 to signalink/mike+headphones
I tried the toggle switch to switch mic/headset between two rigs. Too much hum pickup on the mic. Gave up,and went to two headsets. YMMV Ken WA8JXM On Sat, Jul 23, 2022 at 9:35 PM Brian Hunt wrote: > Pretty simple home brew project, I would think. Four stereo jacks, a DPDT > switch, a small box and a capacitor should do it. The capacitor is to block > the mic bias from going to the Signalink. You would still likely have to > adjust levels whenever switching. Would take some study to get all the > connections right. > > 73, > Brian, K0DTJ > > > On Jul 23, 2022, at 17:29, Andrew (A.J.) Stockton via Elecraft < > elecraft@mailman.qth.net> wrote: > > > > You can check out a few on Amazon - common one headset between computer > for web calls and second for gaming systems > > > > Nobsound Little Bear MC1023 2-Way Audio Microphone Headset Speaker MIC > Switcher Headphone Switch Hub Volume Control Controller Selector 3.5mm RCA > https://a.co/d/7lg6yyp > > > > A.J. Stockton > > > >> On Jul 23, 2022, at 7:33 PM, James Bennett via Elecraft < > elecraft@mailman.qth.net> wrote: > >> > >> For sure - I’d like to switch my Yamaha CM-500 headset between my K4D > and an Icom IC-705. I currently have to use two separate headsets - a PITA > to say the least. > >> > >> Jim / K7TXA > >> > >>>> On Jul 23, 2022, at 5:26 PM, Julia Tuttle > wrote: > >>> > >>> I would be interested in such a gadget too! And it's not (just) lazy, > it > >>> also saves wear on the jacks. :) > >>> > >>>> On Sat, Jul 23, 2022 at 1:49 PM wrote: > >>>> > >>>> Is there a product, some kind of a little box, that allows me to > quickly > >>>> switch the KX3 mic/phones between SignaLink and my mic and speakers ? > >>>> > >>>> I know it sounds lazy ! > >>>> > >>>> > >>>> > >>>> __ > >>>> 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 ju...@juliatuttle.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 w6...@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 ajstock...@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 wa8...@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
Re: [Elecraft] Stacking KPA on KAT
Like Jim, I've had my KPA on top for years. No heat issues because the KPA generates the heat and it is on top. Also, with all of the cables attached to the KAT500 I find it is better having the KAT on the bottom so the cables lay flat on the table rather than all of them arching over the back of the KPA amp. *Ken* *WA2LBI* On Sat, Jul 23, 2022 at 11:37 AM James Bennett via Elecraft < elecraft@mailman.qth.net> wrote: > Paul, > > That’s exactly the way I’ve had my pair set up for years - works great. > > Jim / K7TXA > > > On Jul 23, 2022, at 9:33 AM, Paul Ecker wrote: > > > > I am re-arranging the shack desk. Is anyone stacking the KPA500 on top of > > the KAT 500? Any weight or heat issues ? Or is it ok to do? > > > > 73 Paul w2eck > > __ > > 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 w6...@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 wa2...@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
Re: [Elecraft] Oh Crap
How about this tool? I've used smaller versions to remove pins in connetors. AmazonSmile: Headphone Plug Extraction Tool- Remove Broken Headphone Plug from Headphone Jack of Mobile Devices : Electronics <https://smile.amazon.com/kenddeel-Headphone-Extraction-Remove-Devices/dp/B0991ML3Y3/ref=sr_1_1_sspa?crid=1J9CSFEAOHTIG&keywords=headphone+plug+extraction+tool&qid=1658335880&s=electronics&sprefix=headphone+plug+extraction+tool%2Celectronics%2C72&sr=1-1-spons&psc=1&smid=A2HS9S3GEKH25N&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFBVEY4VTQ3S1o1MUYmZW5jcnlwdGVkSWQ9QTA4MzA5NDEyMjdHWTlYRDI3TU82JmVuY3J5cHRlZEFkSWQ9QTAxNjEyNjEyRVBKMkZMOUpWWDc1JndpZGdldE5hbWU9c3BfYXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==> *Ken* *WA2LBI* On Wed, Jul 20, 2022 at 12:38 PM Chris Cox, N0UK wrote: > I have suffered the very same failure but on my K3. Despite extensive > attempts on my part, removing the dislodged tip has proven futile and it > appears that the female jack will need to be replaced. Removing it might > help but it’s just too finicky for me. > > Chris Cox, N0UK > chr...@chris.org > https://www.credly.com/go/IR77aRbH2rFDdOiymuxu2w > > > > > On Jul 18, 2022, at 07:30, Douglas Speer > wrote: > > > > I received my Ship Group 3 Elecraft K4; in the middle of an across > country move. So it remained in the box until this past weekend. While > setting up, in error I plugged my 1/4” tip/ring/ground paddle connector > into the 1/4” KEY Jack on the back of the rig instead of the correct PADDLE > jack. When I pulled the plug out of the KEY jack, the tip of the 1/4” plug > broke off and is now lodged inside the KEY jack. > > > > It looks as if I will need to open the cabinet in order to extract the > tip piece. I can’t find any online photos of an open K4. Looks as if I > should open the top. Has anyone out there had the top cover off? Any > advice or precautions I should be aware of? > > __ __ 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 reduces power as it gets warmer?
"Given its high duty cycle, you are asking for trouble if you operate your power amplifier in FT8 mode using your KPA1500 at anywhere near high power." Worst case duty cycle on FT8 is never more than 50%. This assumes that you are transmitting every odd or even time slot. Very few stations are able to keep that rate for very long. So I would bet the actual duty cycle is more like 30% to 40% in actual use. On a practical note, I tried FT8 once in a contest (the first WWDigi contest). I ran SO2R, with each radio set to transmit on the alternate time slot. My station uses a single KPA1500 driven by two K3s, switched accordingly. I ran this setup for a whole day, and other than the fans getting to level 5 occasionally, it worked fine. I regularly use this setup on RTTY, and see similar results. I can run 2BISQ on RTTY without a problem. And to answer the original poster's question, yes, the amp will reduce output as it gets warmer. In my case it drops about 100 watts (1500 -> 1400) which is -0.3 dB. Hardly enough to worry about. Ken K6MR From: elecraft-boun...@mailman.qth.net on behalf of Kevin Robertson via Elecraft Sent: Saturday, June 4, 2022 6:52 AM To: Rick NK7I Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA1500 reduces power as it gets warmer? FT8 is a weak signal mode, designed for low power. Given its high duty cycle, you are asking for trouble if you operate your power amplifier in FT8 mode using your KPA1500 at anywhere near high power. I burned out my final on my K2 at 15 watts on FT8. 73, Kevin Robertson KD2WCY > On Jun 4, 2022, at 12:42 AM, Rick NK7I wrote: > > Yes, the KPA1500 will drop 10% of the output, as it warms up. 1500 drops to > 1350, so you have to compensate with the drive. > > I'm told this is typical of all solid state finals (my KPA500 did likewise). > > If you're running the station remotely; bump up the fan speed to slow the > drop (or wear cans). > > 73, > Rick NK7I > >> On 6/3/2022 9:22 PM, David F. Reed wrote: >> I note my KPA1500 drops power at its temperature rises... >> >> Using FT8, so a relatively high duty cycle. >> >> Say I start at a heat sink temperature of 27 C, and 1,000 watts out; by the >> time the temperature is at 65 C, the power has dropped to 893 watts out. >> >> I have a couple of questions about this (not a complaint by the way): >> >> 1. Does anyone else experience this? >> 2. Is it normal? >> > __ > 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 kevin_robert...@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 k...@outlook.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 Issue!
What is the setting for 10m in the KAT500 utility? The behavior you see is consistent with 10m being set for ANT2. Hopefully it is that simple! GL Ken WA8JXM > > __ 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] Kenwood MC-60 Mic with a K3?
Option "D") Make an adapter that swaps the leads so you can use the unmodified MC-60 on the Elecraft. I prefer to make adapters for my rigs so I can use (almost) any mic I have on (almost) any rig I have. 73, *Ken* *WA2LBI* On Tue, May 17, 2022 at 4:46 PM Joe Subich, W4TV wrote: > On 2022-05-17 1:19 PM, Eric Fitzgerald wrote: > > > > Can you use a Kenwood MC-60 desktop mic with an Elecraft K3? > > If you have an MC-60 (not MC-60A), you can use it "as is". The > only difference is that Elecraft and Kenwood reverse pins 5 and 6. > Pin 5 is +8V for Kenwood, Pin 6 is +5V for Elecraft. > > If you have the "non 'A'" version of the MC-50 or MC-60, pins 5 > and 6 are not used. If you have the "A" versions pin 5 is used > to power the preamp in the base of the mic. If you have the "A" > versions you will need to do one of the following: > A) swap pins 5/6 in the Foster plug on one end of the coiled cord > B) move the wire from pin 5 to pin 6 on the 8 pin jack where the > coiled cord (PG-4C) connects on the base of the mic > C) leave the preamplifier (mic amp) switch in the "out" position. > > 73, > > ... Joe, W4TV > > > On 2022-05-17 1:19 PM, Eric Fitzgerald wrote: > > Hello Wise and Powerful Reflector; > > > > Can you use a Kenwood MC-60 desktop mic with an Elecraft K3? I seem to > > recall the front panel jack is the same pin configuration as a Kenwood. > > > > TIA > > > > Eric KG6MZS > > > > www.kg6mzs.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 wa2...@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
Re: [Elecraft] ARRL Antenna Book (and other antenna books)
> > Even if you can only get an old book , it is > still probably 90% revelent. > I find the older ARRL Handbook and Antenna Book more useful, much easier to find what I'm looking for. But then, I've pretty much read them cover to cover. My '64 Handbook and '62 Antenna Book are my go to references, always within reach. (the binding on my '61 Handbook has fallen apart from use, but the pieces are still on the bookshelf. Ken WA8JXM On Thu, May 12, 2022 at 8:15 AM Rick Robinson wrote: > I used an online question site for my Extra Class study years ago and this > site showed which questions I missed. I used my Handbook and Antenna book > to study up on the questions I missed or was unsure of. Without them I > would still be guessing and not know a darn thing. Two best investments I > ever made in Amateur Radio. Even if you can only get an old book , it is > still probably 90% revelent. Newer books will cover newer digital comms. > > On Thu, May 12, 2022 at 2:27 AM Walter Underwood > wrote: > > > > On May 11, 2022, at 10:40 PM, Jim Brown > > wrote: > > > > > > And I agree with W4TV about the usefulness of the Antenna Book. I > > contribute both to it and to the Handbook. These three ARRL books have > been > > central to my learning, in some ways, at least as important as my EE > > education. > > > > > > 73, Jim K9YC > > > > I changed the subject line because this has dritted away from the dipole > > quandry. > > > > The ARRL Antenna Book is a rare kind of technical writing that works for > > many different levels of expertise. I learned things from it when I was > 14 > > and I’ve learned things from it when I was 65. To be fair, I was a 14 > year > > old who got a slide rule for Christmas. Now I’m a 65 year old with a > BSEE. > > I can’t think of another technical book that works from 8th grade to > > post-grad. Maybe the CRC Handbook of Chemistry and Physics. > > > > The ON4UN book is also excellent. The only similarly detailed discussion > > of radial systems seems to be in some AM broadcast manual that costs > > hundreds of dollars. > > > > The only topic not covered in those two books is grounding and bonding, > > which is covered in the also excellent ARRL Grounding and Bonding for the > > Radio Amateur. Yeah, the ARRL does not do creative book titles. > > > > I guess I should get a current Handbook. I wore out my 1970 edition. > > > > 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 rickw...@gmail.com > > -- > Rick Genesis 1-29 > __ > 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 wa8...@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
Re: [Elecraft] PayPal holding payment. (Follow up)
FWIW, my wife had very good results from Paypal. She bought a saddle online and paid with paypal. When it arrived, it did not match the description or photos. The seller ignored her protests so she contacted PP. She reasonably quickly got a human, explained the situation and sent pictures. They withheld the funds from the seller. The saddle was sent back. The seller claimed not to have received it, but the proof of delivery cleared that up and my wife got her money back. She is a firm believer in PP. I've had two bad transactions in 40 years and had excellent results with my credit card company reversing the charges (PP not involved.) Ken On Sun, May 8, 2022 at 12:19 PM James Bennett via Elecraft < elecraft@mailman.qth.net> wrote: > However, one must take things with a grain of salt… my wife and I have > used Facebook Marketplace over the past two years and are very happy with > it. Not sure I’d buy something off of it without seeing / touching it, > though. Prior to our move to Idaho in 2021 we had literally a ton of > “stuff” we needed to get rid of, rather than moving it all up here. Tools, > electronics, washer/dryer, basketball hoop, household items, etc. We put it > on FBM and marked it as “Local Pickup Only”, cash or Venmo payment. We > pocketed several thousand dollars prior to packing up our moving PODS. > > After getting here we needed a couple bicycles for the kids - FBM again. > You get to see it before handing over the green. > > That’s my two pesos. > > Jim Bennett / K7TXA > Eagle, ID > > > > > On May 8, 2022, at 9:14 AM, jerry wrote: > > > > A similar situation. I have learned BTW to never buy ANYTHING > advertised on > > Facebook. > > > > There was an ad for a nice metal-moving-parts model of a V8 engine. > Looked > > pretty cool, and I figured my 8 y/o son and I would have fun putting it > together. > > > > In due time, a box arrived in the mail. In it was a model of an engine > - it > > was a single plastic casting, no moving parts, crudely painted... and it > smelled. > > > > I emailed the company and they offered me a 50% refund. No thanks. I > filed a > > dispute with Paypal. > > > > About a week later, Paypal refunded my money. No fuss, no muss. I > tossed the > > smelly chunk of plastic in the trash. > > > > - Jerry KF6VB > > > > > > > > > > On 2022-05-08 07:17, George Thornton wrote: > >> I had a situation with a frankly fraudulent internet vendor that was > >> claiming discount prices on a name brand product. The web page looked > >> identical to the official company in design and appeared to be an > >> outlet for the company. > >> I placed a small order as a test but then changed my mind within an > >> hour after reading up on problems. I tried to cancel the order with > >> the company but of course they did not respond and claimed to have > >> shipped. I of course never got anything. > >> I went to Paypal who of course paid the company. I kept crying fraud > >> and after a couple months of back and forth nonsense and my > >> persistence they finally refunded. > >> I agree Paypal offers no protection for the most blatantly fraudulent > >> transactions. They are almost complicit in the fraud from their side > >> because they could easily see a pattern of activity > >> Their own inaction under these circumstances almost makes them > >> complicit in the fraud itself. > >> -Original Message- > >> From: elecraft-boun...@mailman.qth.net > >> On Behalf Of Frank Krozel > >> Sent: Sunday, May 8, 2022 4:55 AM > >> To: David Deelstra > >> Cc: elecraft@mailman.qth.net > >> Subject: Re: [Elecraft] PayPal holding payment. (Follow up) > >> And don't be surprised when you get a 1099 from PayPal! > >> -73- FrankKG9H > >> kg9hfr...@gmail.com > >>> On May 7, 2022, at 10:23 PM, David Deelstra > wrote: > >>> After a rabbit hole trip through PayPal's endless loop "customer > service" pages, I stumbled on a page that asked what help I needed. I kept > entering "Notice of Delivery". When it ran out of questions and options, > finally I was presented with a page with a 6 digit number on a black > background, below which was a phone number. I called, got instructions on > what to do, spent the next ten minutes listening to the pages (verbatim) I > had spent the last three hours digging through. Finally I was asked for the > six digit pass code then sat through another eternity on hold fina
Re: [Elecraft] KPA500 Issue
"However, if the rigs are on different bands, you do need to rely on frequency sensing by the amp." You don't have to do this, but it does take a bit of extra hardware/software to interface two K3s to a KPA1500. In addition to the necessary relays to switch the RF path you can use an Arduino to manage the band data as well as the Aux Bus messages. I also use a MicroHam MK2R+ to point the amp at the correct radio. It is seamless. I have the amp in a closet and never touch it, monitored only by the remote software. I can switch instantly between radios in a SO2R setup and interleave QSOs. Ken K6MR From: elecraft-boun...@mailman.qth.net on behalf of Frank Scolaro Sent: Friday, April 1, 2022 8:46 AM To: James Bennett ; Elecraft Reflector Reflector Subject: Re: [Elecraft] KPA500 Issue Jim,. I use the "1A2R" (one amp tw0 radios) from 4O4A. I have two rigs share my KPA1500. However, if the rigs are on different bands, you do need to rely on frequency sensing by the amp. Not sure if the KPA500 does that. GL Frank, W2YK -Original Message- From: James Bennett Sent: Apr 1, 2022 11:02 AM To: Elecraft Reflector Reflector Subject: Re: [Elecraft] KPA500 Issue Well, it looks like there is no simple solution to this dilemma. I was hoping to (easily) be able to use the amp with either rig while both were here in the shack. Pulling the audio cable when I want to use the IC-705 with the amp isn’t practical due to the location of the radio. I changed the “Radio” setting from K3 to Analog and Serial, but with the cables attached, the result is the same - as soon as the amp is put in OPER mode it goes into transmit state (* showing on the LCD). So, the only option for the time being is to always have the K3 powered up and on the band that I want to operate the IC-705 on. Just need to keep their frequencies separated as much as I can. Unless Jack comes up with an alternate…! :-) :-) Jim / K7TXA __ 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 w...@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 k...@outlook.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] K4 and Delivery Delays
"and sold his company to Raytheon..." Didn't he sell to Rockwell? Then I think some of Rockwell went to Boeing, but I'm not sure which part was the radio part. Can't say I've ever seen a Boeing Collins radio though :^) Ken K6MR From: elecraft-boun...@mailman.qth.net on behalf of Andrew Moore Sent: Wednesday, March 30, 2022 1:24 PM To: Fred Jensen Cc: Elecraft Subject: Re: [Elecraft] K4 and Delivery Delays >> memories of one incredibly expensive Raytheon-Collins HF transceiver >> [KWM-380? or something like that] before the end. I think that was it, the KWM-380, and I remember people describing it as such when I saw it at W4VSV when I got my ticket. Made my first QSO on it! Andrew NV1B .. On Wed, Mar 30, 2022 at 1:41 PM Fred Jensen wrote: > Ummm ... Art Collins had a very large military business in addition to a > small amateur one, who, it turned out, > had little interest in building amateur gear. The decision to leave the > market was voluntary, although I have vague memories of one incredibly > expensive Raytheon-Collins HF transceiver [KWM-380? or something like > that] before the end. I don't know why Ten-Tec left, they had a very > loyal and well deserved following, but running a business is really > complex, and they expired well before COVID became a word. To each his > own. > > 73, > > Fred ["Skip"] K6DGW > Sparks NV DM09dn > Washoe County > > Bill Cotter wrote on 3/29/2022 8:37 PM: > > I thought long and hard about a K4, but couldn't stand the idea of a > > two year wait for whatever reasons given. If design decisions and > > supply chain choices cause you to lose customers, it says that > > Elecraft needs to have a long moment to get their house in order. Or, > > they will fall into line with TenTec, Collins and many other American > > companies that have folded tent. > > > > We all went through the pandemic, and worked around it. So, I > > ordered a Flex 6600M and it was delivered in 8-days. No two year wait. > > They have something figured out. I was also assured the PGXL 1500W > > amplifier ships in the same time frame. > > > > Go figure. > > > > Bill N4LG > > > > -- > This email has been checked for viruses by AVG. > https://www.avg.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 andrew.n...@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 k...@outlook.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 500
"They are a "bandaid" for the lack of band buttons on the K3." I've always considered "band buttons" on any radio to be the worst possible use of front panel space I can think of. I always operate with a logging program open, and it's far easier to just type in the frequency I want without removing my hands from the keyboard. I think with the amplifier they just had so much front panel space available that they just couldn't think of anything else to put there. In the years I've had KPA500s and a KPA1500 I have yet to touch them. To each his own. Ken K6MR From: elecraft-boun...@mailman.qth.net on behalf of Andy Durbin Sent: Wednesday, March 23, 2022 1:18 PM To: elecraft@mailman.qth.net Subject: [Elecraft] KPA 500 "It’s also worth mentioning that if the radio and the amp are hard wired together, changing the band using the buttons on the front of the amp automatically changes the band on the radio." It should be possible to disable the KPA 500 band buttons but it isn't. They are a "bandaid" for the lack of band buttons on the K3. The best I could do was set the KPA 500 back to TS-590 TX frequency in under 1 second if a KPA 500 band button was accidentally pressed. 0:06:08.474 New KPA_band - ^BN03; 0:06:08.590 Sending ^BN08; to KPA500 0:06:08.975 New KPA_band - ^BN08; 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 k...@outlook.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] KAT500 serial pinout?
As shown on page 5 of the KAT500 schematic: 12V levels, Tip = Rx, Ring = Tx. Ken K6MR From: elecraft-boun...@mailman.qth.net on behalf of Gordon LaPoint Sent: Tuesday, March 22, 2022 10:29 AM To: Elecraft Reflector Subject: [Elecraft] KAT500 serial pinout? Can I wire a standard 9 pin serial cable to the 3 pin connector on the KAT500? Is it 5V only or does it use RS232 levels? What is the pin out? Thanks, Gordon - N1MGO __ 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...@outlook.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] De-soldering Tool Recommendations?
As I read that I could "hear" K2ORS, Jean Shepherd, narrating the text with his inflections and enthusiasm. Ken WA2LBI On Mar 14, 2022, 19:46, at 19:46, Dave W8OV wrote: >I wonder how many of us have discovered Wayne's methods all by >ourselves? > >Good one, Wayne! > >73, > >Dave W8OV > >On 3/14/2022 17:35, Wayne Burdick wrote: >> The following is only tangentially related, but it has to be dusted >off periodically: >> >> https://www.qsotoday.com/n6kr-desolder-primer.html >> >> I wrote this long ago. Hopefully it's still as dubiously relevant as >ever. >> >> 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 wa2...@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
Re: [Elecraft] De-soldering Tool Recommendations?
I've had the Hakko 808 for many years. It has been used on through hole PCBs, boat anchors, toys, etc. There hasn't been any shortage of suction. Just keep the collection tube clean. My only regret is that I didn't purchase it years earlier! Ken WA2LBI On Mar 14, 2022, 18:25, at 18:25, Dave Fugleberg wrote: >Back when I was a bench tech doing component level repair, I used a >vacuum >desoldering station from Pace (I forget the model). That thing worked >great- I pulled hundreds (maybe thousands) of through-hole parts from >boards with it. > >They were (and are) expensive, but so are time and PC boards, so my >employer equipped every bench with one. It had a glass tube in the >handset >that collected the solder. As long as you cleaned it regularly, it >worked. > >I recently looked at some used ones but still couldn’t justify the >price >for my hobby needs, so I continue to use a variety of means to remove >solder. None are as good as the Pace. I’ve been tempted to buy a Hakko >or >one of its knock offs, but reviews generally say they don’t have enough >suction. I’d love to hear an honest comparison between the Pace and the >Hakko from someone who has used both. > >73 de W0ZF > >On Mon, Mar 14, 2022 at 9:26 AM jerry wrote: > >> It's hard to beat a good old big blue Soldapullt. >> >>To remove the offending part with minimal damage to its >surroundings, >> it's generally >> wise to chop the part off its leads first. Then if you have access >to >> both sides of the >> board, you can heat each land with a soldering iron and pull the lead >> out with a pair >> of tweezers or needle-nose pliers. Then suck the land clean with the >> soldapullt. >> Alternatively, you can clean it with solder wick, and poke the hole >> through with a >> toothpick. >> >>I haven't had much luck with desoldering irons. I did buy a >> desoldering station. >> It has a vacuum pump in the base unit, and a separate iron in a >stand, >> with a vacuum >> chamber and filter. The pump starts when you pull the trigger on the >> iron. It's a >> Chinese copy of a Hakko. First of all, the pump is not very strong. >> Not that much airflow >> or suction. Much less than a Soldapullt. Second, it takes it a LONG >> time to warm up, >> I guess because the desoldering head has high mass. >> >> - Jerry KF6VB >> >> >> >> >> On 2022-03-13 22:06, Tony wrote: >> > All: >> > >> > Can anyone recommend a budget de-soldering iron that can be used in >> > tight places? I need to remove a small component that has a few >> > surface mount devices close by so the iron would need to have a >small >> > tip. >> > >> > Also need advice on the best soldering iron to use for this type of >> > work as well as the best low-temp Rosin core solder to use. >> > >> > Thanks, >> > >> > Tony -K2MO >> > >> > __ >> > 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 je...@tr2.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 dave.w...@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 wa2...@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
Re: [Elecraft] Lots of Elecraft seen in contest video
And let me add that the sound track was also produced by 100% Elecraft. Thanks to Dean for making me look (er, sound) good. Ken K6MR From: elecraft-boun...@mailman.qth.net on behalf of Dean Wood Sent: Friday, February 11, 2022 8:38 AM To: elecraft@mailman.qth.net Subject: [Elecraft] Lots of Elecraft seen in contest video Hi Elecraft list, The California QSO Party created a Youtube video to highlight all of the county expedition stations in CQP 2021. Elecraft gear dominates in the video. Take a look at the "Notes" section for each expedition and the accompanying pictures. Video can be seen at: https://youtu.be/sK-OebMFn7I After you click the Youtube video link, you can press the letter ' f ' to view the video in full screen. 73... -Dean - N6DE CQP Chairman K3 #313 __ 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...@outlook.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] KAT500 drops out during voice peaks
Something arcing over on voice peaks would do what you describe. Are there any weak insulators or spots where something might arc? Ken WA8JXM On Thu, Feb 3, 2022 at 7:45 PM David F. Reed wrote: > It might help if we knew more about the antenna system; what antenna, > balun, power rating of them vs. power running, RF feed back in shack, > any other info might help us point at what to look at... > > I used to have some similar events, and got rid of them with a > combination of toroids and current chokes in feed line; was suffering > too much RF in shack, and this fixed it for me. > > 73 de Dave, W5SV > > On 02/04/2022 12:20 AM, hawley, charles j jr wrote: > > I've been having my tuner go to high swr a random voice peak. > > The utility shows the right settings after a drop out but the Amp Key > Interrupt box is checked. > > And the swr showing on the LEDs is high. > > Not sure what is going on. > > I get it back to operating at low swr by doing a tune. > > > > Chuck Hawley > > c-haw...@illinois.edu > > > > Amateur Radio, KE9UW > > aka Jack, BMW Motorcycles > > __ > > 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 w5sv.d...@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 wa8...@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
Re: [Elecraft] Seeking input on 3rd-party microphones used with our transceivers
A mic, what's that? LOL When I have operated phone, I either use my old Shure 444, or, for a headset/boom mic, a Koss SB-45 (comfortable and $50). I receive great audio reports from either of them. Ken WA8JXM On Mon, Jan 31, 2022 at 10:12 PM Wilson Lamb via Elecraft < elecraft@mailman.qth.net> wrote: > > I use a 35 year old mic from my TS-450 Kenwood. > It has a better feel than the Elecraft mic and I think it sounds better. > Wilson > W4BOH > > __ > 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 wa8...@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
Re: [Elecraft] KPA1500 Remote Software Question
I don't remember the slider ever moving in response to the fan speed while in Auto mode. The current fan level is noted in the lower info bar by a number (1 - 5), but that's it. Ken K6MR From: elecraft-boun...@mailman.qth.net on behalf of Ed G Sent: Sunday, January 30, 2022 1:29 PM To: elecraft@mailman.qth.net Subject: [Elecraft] KPA1500 Remote Software Question Folks, Using the KPA1500 remote program. There is a slider control for the fan just below the temp bargraph. I can manually adjust the slider to give me different fan speeds, so the control is communication with the KPA1500. I seem to remember when I first installed the remote software that the slider position responded to the KPA1500’s automatic fan speed. I could look at the position of the slider and know (while wearing headphones) what the fan speed was. But that no longer seems to be working, and the blue slider remains at the far left position even when the amp fans are running. So I’m not quite sure how this slider is supposed to work. If I set min fan speed in the KPA1500 menu to “1” the slider position will move to “1” It just doesn’t move when the fan is set to “auto” and comes on by itself. --Ed, N3CW— -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus __ 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...@outlook.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] SVGA Board For K3
"If it is an FPGA, you will need to get Elecraft to program it." No. The FPGA gets loaded each time you turn on the P3. There are different code images for each monitor resolution. So the uP checks which resolution you have selected and loads the proper code for that resolution. Ken K6MR From: Bill Frantz Sent: Thursday, January 20, 2022 6:36 PM To: Ken K6MR Cc: Mark Goldberg ; Reflector Elecraft Subject: Re: [Elecraft] SVGA Board For K3 If it is an FPGA, you will need to get Elecraft to program it. 73 Bill AE6JV > On Jan 20, 2022, at 9:03 PM, Ken K6MR wrote: > > The FPGA is a Xilinx XC6SLX9 in a FTG256 1.0 mm pitch BGA package. > > Ken K6MR > > > From: elecraft-boun...@mailman.qth.net on > behalf of Mark Goldberg > Sent: Thursday, January 20, 2022 4:18 PM > To: j...@audiosystemsgroup.com > Cc: Reflector Elecraft > Subject: Re: [Elecraft] SVGA Board For K3 > > What is the chip and what package is it in? > > 73, > > Mark > W7MLG > > On Thu, Jan 20, 2022 at 4:47 PM Jim Brown wrote: > >> The SVGA board in one of my two P3s has failed, and a friend who works >> for Elecraft told me it's un-repairable. The reason is that its the >> failure of a large chip that simply cannot be un-soldered. He also tells >> me that orders for the board are still being accepted for an >> unpredictable delivery time, but that at least a couple dozen more >> orders are needed to make a production run. >> >> The SVGA board is a wonderful tool that I find invaluable. If you want >> one, now's the time to order it. >> >> 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 marklgoldb...@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
Re: [Elecraft] SVGA Board For K3
The FPGA is a Xilinx XC6SLX9 in a FTG256 1.0 mm pitch BGA package. Ken K6MR From: elecraft-boun...@mailman.qth.net on behalf of Mark Goldberg Sent: Thursday, January 20, 2022 4:18 PM To: j...@audiosystemsgroup.com Cc: Reflector Elecraft Subject: Re: [Elecraft] SVGA Board For K3 What is the chip and what package is it in? 73, Mark W7MLG On Thu, Jan 20, 2022 at 4:47 PM Jim Brown wrote: > The SVGA board in one of my two P3s has failed, and a friend who works > for Elecraft told me it's un-repairable. The reason is that its the > failure of a large chip that simply cannot be un-soldered. He also tells > me that orders for the board are still being accepted for an > unpredictable delivery time, but that at least a couple dozen more > orders are needed to make a production run. > > The SVGA board is a wonderful tool that I find invaluable. If you want > one, now's the time to order it. > > 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 marklgoldb...@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 k...@outlook.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] Elecraft KPA500 sn 1910 dead, update.
Not sure if this has been suggested: did you check the fuses on the power supply board? Those will kill the LV supplies and will keep things from powering up. Ken K6MR From: elecraft-boun...@mailman.qth.net on behalf of Sam Sargent via Elecraft Sent: Monday, January 17, 2022 11:57 AM To: elecraft@mailman.qth.net Subject: [Elecraft] Elecraft KPA500 sn 1910 dead, update. Elecraft KPA500 sn 1910 dead. UPDATE 12/17/21 First. Thanks to everyone who has responded to mypost. I have read all comments withinterest and have responded to several folks who offered ideas that I havetried. Thank you for trying to help. SECOND. Here is a bit of extra info that I havediscovered. I disassembled the fuse blockand cleaned all contacts and the fuses with the “Deoxit” product. I configured my “OWON HDS272S”meter/oscilloscope to measure resistance and noted that the leads are about 0.7ohms. I connected the meter leads to theflat prongs of the 115vac cord that was plugged into the fuse block on theKPA500. With the rocker switch on thefuse block 3 in the OFF position (o) the meter showed zero (0) ohms. With switch 3 ON (!) the meter showed 2.8ohms. Thus, subtracting the resistance inthe meter leads, the resistance through the fuse block changed from 0 ohms to2.1 ohms. I connected the 115vac cord tothe wall socket and went through the power up procedure. No joy. I listened for the hum of the transformer, and there was no hum. I am flummoxed! CONCLUSION. Thisleads me to believe that the power cord, fuses, and fuse block are functioning. I think that my next step is to look into the possibilityof sending the KPA500 to a repair facility. I am open to your ideas. 73 Sam __ 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...@outlook.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] K4 Remote Software?
Waiting for Elecraft to finally get they supply of Kyber Crystal's. Cannot wait to see Wayne demonstrating the mini light Saber at Dayton this year. Will finally be able to remotely eliminate the equipment of the "tuner uppers" during nets. Way to go Master council member Madolyn, masters Wayne, Eric and the whole crew On Friday, December 24, 2021, 10:20:05 AM EST, Chris R. NW6V wrote: Wayne said: "Did I mention we're also working on a DX tractor beam?" No secret there - the attraction from Elecraft is very strong... 73 - Merry Xmas - and HNY Chris NW6V DDddd-dddDD __ 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 backhoe...@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 arch...@mail-archive.com
Re: [Elecraft] “ELECRAFT NVIS field day”
--- "In Hawaii, 40 meters worked great for NVIS probably 11 out of 12 months a year. Someone else who knows can comment, but I got the impression that 40 meters almost never works for NVIS in the mainland US. If this is true, an Elecraft NVIS field day might be limited to those who either have room for an 80 meter dipole, or who can devise some other kind of 80 meter antenna that can radiate up." I think it depends on time of day, time of year, and what part of the sunspot cycle. 40m is pretty much the top limit for NVIS though. But sometimes 40 works for NVIS. That's one of the reasons for our 60m allocation, NVIS when 40 is too long and 80m is dead. OTOH I've seen 160 too long for statewide coverage at times. FWIW, I agree a vertical is not an NVIS antenna. Some people may be confusing groundwave (usually up to 25 miles) with NVIS. They are totally different propagation modes. Ken WA8JXM On Fri, Dec 17, 2021 at 7:22 PM David Herring wrote: > It is absolutely true that antennas intended for NVIS use do not have to > be hung low. But they CAN be. And there are instances where doing so can > be desirable. > > When I lived in Hawaii, we used NVIS for reliable statewide HF > communications to very good effect. When I hung my dipole up about 30 feet > or so, I would frequently get calls from hams in Japan, Oceana, mainland > US, Canada and elsewhere. Ordinarily that would be nice, but when one is > specifically focused on local comms, that can get to be a problem. When I > hung my NVIS dipole down around 10 feet, I still got excellent statewide > communications but no longer got calls from afar. > > So I kept my dipole low for local, and erected a vertical for DX. Both > worked perfectly for their intended use. > > In Hawaii, 40 meters worked great for NVIS probably 11 out of 12 months a > year. Someone else who knows can comment, but I got the impression that 40 > meters almost never works for NVIS in the mainland US. If this is true, an > Elecraft NVIS field day might be limited to those who either have room for > an 80 meter dipole, or who can devise some other kind of 80 meter antenna > that can radiate up. > > 73, > Dave - N5DCH > > > > > > On Dec 17, 2021, at 11:05 AM, Julia Tuttle > wrote: > > > > Wait, why would people think verticals are good for NVIS? Isn't a > > vertical's radiation pattern pretty much "sideways but not up", and NVIS' > > desired radiation pattern "up but not sideways"? > > > > On Fri, Dec 17, 2021, 12:54 Jim Brown <mailto:j...@audiosystemsgroup.com>> wrote: > > > >> On 12/17/2021 6:12 AM, Greg Herman wrote: > >>> What if there was the annual event called the The Elecraft > >>> NVIS field day? > >> > >> There is a major myth regarding NVIS that antennas must be low. This is > >> totally false. The facts are that vertical antennas are terrible for > >> NVIS, and that horizontal antennas work better up to nearly one-half > >> wavelength above ground. This study ran in National Contest Journal > >> several years ago. > >> > >> http://k9yc.com/AntennaPlanning.pdf > >> > >> 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 ju...@juliatuttle.net ju...@juliatuttle.net> > >> > > __ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft < > http://mailman.qth.net/mailman/listinfo/elecraft> > > Help: http://mailman.qth.net/mmfaq.htm <http://mailman.qth.net/mmfaq.htm > > > > Post: mailto:Elecraft@mailman.qth.net <mailto:Elecraft@mailman.qth.net> > > > > This list hosted by: http://www.qsl.net <http://www.qsl.net/> > > Please help support this email list: http://www.qsl.net/donate.html < > http://www.qsl.net/donate.html> > > Message delivered to david.n5...@gmail.com <mailto:david.n5...@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 wa8...@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] Power Increase Elecraft K1 modification
Elecraft K1 modifications Searching for K1 modifications, I found JL3AMK and his website for Power increased on an Elecraft K1. Refers to page 79 in the Elecraft manual, DRIVER Q6, 2SC2166. Resistor 30 is attached to Q6. Is this a safe or recommended mod? Did you perform the modification? *** http://www.jl3amk.org/en/ Power Increased The output power of my K1 was four watts on 15 meters, so I added a 0.001uF capacitor (as a bypass) in parallel with R30 on the RF board. 160m: 10W (not changed) 80m: 10W (not changed) 17m: 7W (from 6W) 15m: 7W (from 4W) Ken Elecraft K1 15 meters __ 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 K1 Noise Blanker
I recently had the question on the Elecraft K1. - looking to buy an already built K1 Noise Blanker KNB1. And here is the best answer to adding a noise blanker. http://www.westmountainradio.com/product_info.php?products_id=clr_dsp CLRdsp ClearSpeech® DSP Noise Reduction Processor $220 plus shipping #58407-949 Ken Elecraft K1 260 elecraft@mailman.qth.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
[Elecraft] K1 LCD BaCKLIGHT
Need the best modifications for back lighting of the K1. This version never had the K1 LCD Backlight Kit. Ken Elecraft K1 nr. 260 __ 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] Noise Blanker KNB1 FOR K1
I am looking for the Elecraft K1 Noise Blanker KNB1. Does anyone have this for sale? Ken N4SO Elecraft K1 number 260 __ 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] K1 Noise Blanker KNB1 already-built and working
I am looking to buy an already built Elecraft K1 Noise Blanker KNB1. The pulse noise from the nearby power lines makes the Elecraft K1 not very usable at this location. Ken N4SO E-mail redscarlette7...@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] P3 Issue
About 8 hours into CQWW CW, one of my P3's bandscope function stopped working. I checked the cables. I powered the unit off. When it came on, it worked for a few seconds. The outboard monitor worked for a few seconds. Then it stopped working. I did this a few times with the exact same results. I never turned it or the radio off after the contest. This morning before swapping P3s to make sure it was a P3 issue, I turned the P3 off and when I turned it back on after just a few seconds, it worked perfectly. I felt half blind during most of the contest, so I want to make sure I don't run into this again. Any suggestions. 73, Ken, K6LA / VY2TT __ 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] [POSSIBLE SPAM] Re: [POSSIBLE SPAM] Re: Need K3 Board
The two boards I saw had an event on the USB 5V line, not the data lines. Almost everything connected to the USB 5V line was toasted. So the failure modes would be different depending on the actual event. One thing is for sure: be sure everything in the shack is bonded so that you don’t get a ground bounce. That is sure to take out lots of stuff. Ken K6MR From: Dr. William J. Schmidt<mailto:b...@wjschmidt.com> Sent: Sunday, November 28, 2021 06:38 To: elecraft@mailman.qth.net<mailto:elecraft@mailman.qth.net> Subject: Re: [Elecraft] [POSSIBLE SPAM] Re: [POSSIBLE SPAM] Re: Need K3 Board The number of parts zapped by a lightning strike is impossible to determine in advance. The more ground paths you have (USB cables, Aux cables, audio cables, etc.) the higher the probability of higher part mortality count. However, in every when only the USB cable was connected, I just had to replace the TUSB2036 and the USBLC6-2 ESD protection packs. Your mileage may vary... lightning of course. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ email: b...@wjschmidt.com -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Ken K6MR Sent: Saturday, November 27, 2021 1:49 PM To: elecraft@mailman.qth.net Subject: [POSSIBLE SPAM] Re: [Elecraft] [POSSIBLE SPAM] Re: Need K3 Board On 11/27/2021 9:30 AM, Dr. William J. Schmidt wrote: > I have the rework equipment in my RF lab to fix these boards and have done so on many occasions (there are basically only two parts that can go bad on the USB side... the ESD diode pack and the MAX-USB chip, both of which are surface mount packs that can easily be removed). I’ve only repaired two of these boards, but it was way more than two parts. The ones I fixed had the hub, voltage regulator, switches, and one other device get toasted. All surface mount, so easy fix once the dead parts were identified. Cheap too, I think it was no more than $10 per board parts cost. Ken K6MR From: David Gilbert<mailto:ab7e...@gmail.com> Sent: Saturday, November 27, 2021 09:17 To: elecraft@mailman.qth.net<mailto:elecraft@mailman.qth.net> Subject: Re: [Elecraft] [POSSIBLE SPAM] Re: Need K3 Board I think that's an excellent offer. In the absence of Elecraft supporting these older boards (as I stated in my first post, when I asked Elecraft to repair my KIO3 they declined), it would be great if we could compile a small database of people like yourself willing and able to do proper repair ... for a reasonable fee, of course. If somebody was willing to do this on a regular basis, I suspect that many of us would be willing to simply donate older/excess boards. I have a couple that I would. 73, Dave AB7E On 11/27/2021 9:30 AM, Dr. William J. Schmidt wrote: > I have the rework equipment in my RF lab to fix these boards and have done so on many occasions (there are basically only two parts that can go bad on the USB side... the ESD diode pack and the MAX-USB chip, both of which are surface mount packs that can easily be removed). If you have bad KIO3B boards, please sell them to those of us that can repair them and keep them in stock for future needs. > > > Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ > PJ2/K9HZ > > email: b...@wjschmidt.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...@outlook.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 b...@wjschmidt.com -- This email has been checked for viruses by AVG. https://www.avg.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...@outlook.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] [POSSIBLE SPAM] Re: Need K3 Board
On 11/27/2021 9:30 AM, Dr. William J. Schmidt wrote: > I have the rework equipment in my RF lab to fix these boards and have done so > on many occasions (there are basically only two parts that can go bad on the > USB side... the ESD diode pack and the MAX-USB chip, both of which are > surface mount packs that can easily be removed). I’ve only repaired two of these boards, but it was way more than two parts. The ones I fixed had the hub, voltage regulator, switches, and one other device get toasted. All surface mount, so easy fix once the dead parts were identified. Cheap too, I think it was no more than $10 per board parts cost. Ken K6MR From: David Gilbert<mailto:ab7e...@gmail.com> Sent: Saturday, November 27, 2021 09:17 To: elecraft@mailman.qth.net<mailto:elecraft@mailman.qth.net> Subject: Re: [Elecraft] [POSSIBLE SPAM] Re: Need K3 Board I think that's an excellent offer. In the absence of Elecraft supporting these older boards (as I stated in my first post, when I asked Elecraft to repair my KIO3 they declined), it would be great if we could compile a small database of people like yourself willing and able to do proper repair ... for a reasonable fee, of course. If somebody was willing to do this on a regular basis, I suspect that many of us would be willing to simply donate older/excess boards. I have a couple that I would. 73, Dave AB7E On 11/27/2021 9:30 AM, Dr. William J. Schmidt wrote: > I have the rework equipment in my RF lab to fix these boards and have done so > on many occasions (there are basically only two parts that can go bad on the > USB side... the ESD diode pack and the MAX-USB chip, both of which are > surface mount packs that can easily be removed). If you have bad KIO3B > boards, please sell them to those of us that can repair them and keep them in > stock for future needs. > > > Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ > > email: b...@wjschmidt.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...@outlook.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] Need Mic adapter: Icom SM-50 to K3 mic input jack
Bob, Can you build adapters if you have schematics? DIY gives you lots of possibilities. Ken WA2LBI On Nov 2, 2021, 09:35, at 09:35, Bob KD7YZ wrote: >Hello Elecraft List > >I have no microphone for my K3. I am usually on CW or the digital >modes. >Now I want to get on the KY Phone Net on 3838. > >So I talked DXEngineering and they know of no adapter plug/cable. > >So, I have an Icom SM-50 mic and a Yaesu MD-100 mic. > >Anyone know of an adapter connector that would fit either to adapt them >to the K3? >Or maybe a universal box that lets me plug all the mic's in and have a >cable to the K3 >Also run an Icom IC-9700 FWIW. > >thanks! > > >-- >73, >KD7YZ Bob EM88LL > >__ >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 wa2...@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
Re: [Elecraft] Subject: KX3 in multi radio environment
Thanks to everyone for the comments. Sounds like the KX3 works fine in this environment. I should have known since it is an Elecraft radio :^) Ken K6MR From: Steve Hall<mailto:99sun...@gmail.com> Sent: Monday, November 1, 2021 15:00 To: elecraft@mailman.qth.net<mailto:elecraft@mailman.qth.net> Subject: [Elecraft] Subject: KX3 in multi radio environment The KX3 receiver is quite capable in crowded environments. A KX3 with its 15 Watts output will drive a KPA1500 to over 900 Watts. WM6P __ 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...@outlook.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 in multi radio environment
I don’t have a KX3, but a friend does and he has a question regarding the KX3 receiver in a multi transmitter environment like Field Day. I would not expect it to be as good as a K3, but is it usable? Anything special you have to do to it? I’m thinking at a minimum a set of band filters, which would be easy even with the 100 watt amp. Thanks for your thoughts and experiences. Ken K6MR From: kevin<mailto:kev...@coho.net> Sent: Sunday, October 31, 2021 22:43 To: elecraft@mailman.qth.net<mailto:elecraft@mailman.qth.net> Subject: [Elecraft] Elecraft CW Net Errata sheet I worked through the nets in my memory and I did not feel right. I was certain I had worked Roy in Iowa but didn't remember typing his name. I was right, I had made a mistake. Mea culpa. On 14050.5 kHz at 2200z: W0CZ - Ken - ND NO8V - John - MI => K6XK - Roy - IA <= K0DTJ - Brian - CA KB3FBR - Joe - PA K4JPN - Steve - GA On 7047.5 kHz at z: KG7V - Marv - WA W0CZ - Ken - ND K0DTJ - Brian - CA KL7CW - Rick - AK K6PJV - Dale - CA Until next week 73, Kevin. KD5ONS - __ 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...@outlook.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] Through-hole Replacement for K3 Q5 (2N7002)
The Fairchild/On Semi data sheet is common to the 2N7000/2N7002/NDS7002A. There are some differences in the maximum ratings, with the 2N7000 good for more continuous drain current (probably due to the TO-92 package). They all have the same drain-source breakdown voltage (60V). I’m assuming this is Q5 on the main RF board. The active device parameters are different but not enough to worry about in the circuit where Q5 is used. It is nothing but a switch to reverse the active state of the 7R line to activate the big FET used for the Key Out line. The 2N7000 will be fine. Ken K6MR From: Pete Smith N4ZR<mailto:pete.n...@gmail.com> Sent: Thursday, October 21, 2021 06:56 To: Elecraft List<mailto:elecraft@mailman.qth.net> Subject: [Elecraft] Through-hole Replacement for K3 Q5 (2N7002) The original surface-mount part seems to be back in stock in the US, but I'm afraid that what I need is a through-hole equivalent, because the PC board where the old one was mounted is a wreck (damage from part failure, plus my ham-handed efforts to replace it). Google thinks a 2N7000 will do, but I'd sure like to get an expert opinion. -- 73, Pete N4ZR Check out the new Reverse Beacon Network web server at <http://beta.reversebeacon.net>. For spots, please use your favorite "retail" DX cluster. __ 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...@outlook.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] HELP! XFINITY SHUT OFF INTERNET DUE TO HAM ANTENNAS
I’d start with the Public Utilities Commission. I had good response from them when dealing with PG&E. I ‘think’ cable companies are under their jurisdiction, but if not they can probably tell you who does deal with them. Ken K6MR From: eric norris via Elecraft<mailto:elecraft@mailman.qth.net> Sent: Wednesday, October 20, 2021 11:23 To: Elecraft Reflector<mailto:elecraft@mailman.qth.net> Subject: [Elecraft] HELP! XFINITY SHUT OFF INTERNET DUE TO HAM ANTENNAS Dear Gang: Xfinity, our internet provider, showed up at 7:30am this morning, to explain to the XYL that we were being cut off for good because my amateur radio activities had caused wide area outages. Oddly, these wide area outages did not include my own house. They told her the antennas themselves--absent any power--were the problem The last time I was threatened, I installed chokes and opto-isolaters on our shielded ethernet lines, and after being told they use 14Mhz as their carrier frequency, I have stayed off 20m, only using 100w unless I'm in a rare contest. I asked to speak to a technical guy--they gave me a number which I called, but he never called back. Any Ideas? Does anyone have a contact at the ARRL, or know a communications lawyer? Comcast/Xfinity will be back out here at 2pm Pacific time--I'd appreciate any help. My XYL depends on an internet connection to work. Being off the air is unimaginable. Frantic, 73, Eric WD6DBM  __ 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...@outlook.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] Headphones for Hearing Loss
The Heil PRAS works extremely well for me. 73, Ken, K6LA / VY2TT On Wed, Oct 13, 2021 at 3:54 PM Robert Strickland via Elecraft < elecraft@mailman.qth.net> wrote: > I have ReSound hearing aids with a BlueTooth receive capability. They > link up with my iPhone automatically. Can I buy a generic BlueTooth > transmitter, plug it into my K3s and have the same type of hassle free > link, or are there compatibility technical issues about which I am > unaware? Thanks for info and opinions. > > ...robert KE2WY > > On 26 Jan 2021 16:22, Joseph Shuman via Elecraft wrote: > > I have severe high-frequency hearing loss, up to 85 dB at 6-8KHz and 60 > dB at 3-4KHz. Lower than that my hearing is close to normal for my age. I > use hearing aids and the style I have won’t work with headphones. I have > the equalizer on the KX2 set to boost the highs, OK with an external amp & > speaker but it is not enough with the headphones I have. Any > experience/recommendations with headphones that have a built-in equalizer > or treble boost? SSB operator. (KX2 #3007, KXPA100 #2802) > > > > Keeping Watch- > > shu > > > > Joe Shuman, NZ8P > > __ > > 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 rc...@verizon.net > > > > -- > Robert G Strickland, PhD ABPH - KE2WY > rc...@verizon.net.usa > Syracuse, New York, USA > __ > 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 kwidel...@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
Re: [Elecraft] Fwd: KX3 lithium ion polymer internal battery
No thanks. Far worse than Hell MI. Sent from Yahoo Mail on Android On Mon, Oct 4, 2021 at 7:53 PM, Skip Jensen wrote:No, I have not been to Hell MI, although I did do a year remote in the northern interior of AK at the Arctic Circle while in the Air Force. Froze there from early Oct to early May. Had 11 days below -65F ... when it finally warmed up to -30F, it felt like field jacket wx rather than parkas. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County On 10/4/2021 4:17 PM, Ken B wrote: Well you have not been to Hell Michigan. I can 100% confirm it freezes over yearly Sent from Yahoo Mail on Android | | Virus-free. www.avg.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] Fwd: KX3 lithium ion polymer internal battery
Well you have not been to Hell Michigan. I can 100% confirm it freezes over yearly Sent from Yahoo Mail on Android On Mon, Oct 4, 2021 at 7:10 PM, jerry wrote: On 2021-10-04 15:12, Skip Jensen wrote: > I would put an LiPoly inside one of my radios right after it has been > reliably determined that hell has frozen over. *** How about Lithium Ion - the round cells? I have been playing with 18650 cells a bit - made up a pack for an ebike. Have gotten set up to weld the tabs. - Jerry KF6VB I used one for my KX1, > external on a pigtail. I got it at the RC store, about the size of a > small matchbox. I was in the Spartan Sprint one summer evening on the > deck, and it burst into flames while I was sending. Yanked the > pigtail loose and tossed it down onto a gravel driveway where it > fizzed and popped with flames for about 5 minutes. I have a friend > whose LiPoly in his RC airplane did the same thing. Sadly, all he > could do is watch the airplane go into a tight spin and "make > uncontrolled contact with the ground." [1] > > LiFePO4 batteries are very stable. LiPoly ... not so much. > > 73, > > Fred ["Skip"] K6DGW > Sparks NV DM09dn > Washoe County > > [1] A phrase often used in USAF A/C accident reports. See also NASA > -- "anomaly" which can be anything from a burned out light bulb to the > rocket landing pointy end down somewhere in the desert > > On 10/4/2021 10:09 AM, Rob Walker via Elecraft wrote: >> I have made myself a 14.8v lithium ion polymer battery, with battery >> management system and audible alarm, that fits inside the KX3. >> >> Ideally I would like to leave it in the KX3 to charge and charge it by >> connecting a 15v (max 15.5v) PSU to the DC connector of the KX3. >> >> If I connected my battery to pins 1 and 3 of the 10pin P3 connector >> would this battery power the KX3 and charge when connected to an >> external 15v PSU…. Without damaging the KX3 of course ? >> >> >> Kind Regards, >> >> >> Rob Walker >> __ 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 backhoe...@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 arch...@mail-archive.com
[Elecraft] K4
I have 4 kids, I could give each another $1500.00 when I dieor I could buy A new K4 , Let’s see which should I do? Ken K5DNL __ 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 Fans
KPA1500 owner’s manual, page 31. Under “menu items”, “fan speed min”. There are 5 levels from which to choose. I’ll refrain from asking you why. Ken K6MR From: Ronnie Hull<mailto:w5...@comcast.net> Sent: Sunday, August 8, 2021 10:08 To: elecraft@mailman.qth.net<mailto:elecraft@mailman.qth.net> Subject: [Elecraft] KPA1500 Fans I looked through my kpa1500 fans and do not see this question answered. I would like to set my fans to run at medium speed ALL THE TIME!! How can I do t his Im sure I will get blasted for this but I’m a tough old hide Ronnie W5SUM -- This email has been checked for viruses by AVG. https://www.avg.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...@outlook.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] KAT500/KPA500 with IC-7610?
I have had the IC-7610 and the KPA500/KAT500 for over three years and it works very well when I switch bands with the intention of transmitting. My "nit" to pick is that the KAT500, as has been said, can not be preset by the IC-7610 in receive. It can preset the KPA500, for all bands but WARC, by using a DIY "band data" voltage cable (Icom doesn't support band data voltages for the WARC bands). If I want to *listen* to different frequencies on the IC-7610 that are on different antennas connected to the KAT500 I have to manually select the antenna on the KAT500. This makes scanning frequencies on the IC-7610 impossible. The KPA1500, that combines an amp and antenna matcher (aka tuner), can read Icom CI-V data and preset both the amp and the "tuner". This feature should have been/should be available for the KPA500 and KAT500. I believe the KPA500 and KAT500 can read data from Kenwood and Yaesu transceivers. Why was Icom left out of the mix? Ken WA2LBI On Sun, Aug 1, 2021 at 4:33 PM CUTTER DAVID via Elecraft < elecraft@mailman.qth.net> wrote: > > __ > 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 wa2...@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
Re: [Elecraft] K3 & KX3 with KPA500/KAT500
I use this four position AV switch to select the keying line. Since it can switch three connections (L/R audio, video) you can get creative. Although I don't use ALC it could also be switched along with the keying line. https://smile.amazon.com/gp/product/B00KXVBB3Q/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 Ken WA2LBI On Fri, Jul 30, 2021 at 3:37 PM Jim Brown wrote: > On 7/30/2021 9:43 AM, Phil Hystad via Elecraft wrote: > > Can this be done and if so has this been written up or documented > someplace? > > The KAT500, KPA500, and KPA1500 have excellent frequency sensing, so > nothing more than a SPDT coax switch is required. I suspect that the key > lines from the KX3 and K3 can be paralleled. For many years, I've run > the Key inputs of a KPA500 (and now KPA1500) wired in parallel. > > In my station, a K3 is switched between an 87A and a KPA1500. I'm doing > it with a pair of Tohtsu SPDT coax relays on input and output. Before > the KPA1500, the KPA500 gave me 500W on 6M, while the 87A was the HF > contesting amp. Now the 87A is standby. > > 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 wa2...@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
Re: [Elecraft] KAT500/KPA500 with IC-7610?
Chuck, I, too, have been using an IC-7610 with the KAT500/KPA500 combination for several years. My IC-7610 TUNER jack is connected to the TUNE jack on the rear of the KAT500 via a LDG Electronics IC-PAC-6 cable. While the TUNE button on the IC-7610 or the TUNE button on the KAT500 activates the IC-7610 10W tune function and causes the KAT500 to tune, the Elecraft KAT500 manual stated "If a tune cycle is performed, 20 watts or more will produce more accurate tuning". My procedure is to switch to RTTY mode on the IC-7610 and key the rig. The KAT500 matches the load and I return the rig to the previous mode. This literally takes only a few seconds. Yes, the TUNE button works but I have found that sometimes my method produces a better match. Be sure to follow the KAT500 "training" procedure to store your various bands and frequencies in the tuner so they can be quickly recalled. As has been mentioned, you have to manually adjust your output as you switch between the amp and full power. I have a Brother P-Touch label on the amp to remind me about max power input. As for obtaining a tuner cable, you can get one from LDG, and other vendors. The IC-PAC-6 cable is 6' long while the IC-PAC cable is 14" long. https://ldgelectronics.com/index.php/products/accessories/cables/ GL & 73! Ken WA2LBI On Fri, Jul 30, 2021 at 12:55 PM Buck wrote: > I am running that combo now. Plug a Ten-a-Tuner ($10) from W2ENY.com > into the antenna tuner jack on the back of the 7610 or 7300. When you > push the rig's tune button it will send a 10w signal for about 8 > seconds. The KAT500 reads the frequency and makes the switch also > sending the info to the KPA500. > > You have to manually reduce the drive power from the 7610 or the amp > will fault when you transmit. > > It is not as elegant as the Elecraft system but it works reasonably > well. I was told there was a cable that would connect the 7610 but I > could not get my home-brew one to work. If someone can point to a > source, I would appreciate it. > > Buck, K4IA > Honor Roll > 8BDXCC > Author EasyWayHamBooks.com > License and Operating Manuals > > On 7/30/2021 9:12 AM, Chuck Chandler wrote: > > I'm currently running the K3S with the KAT500/KPA500 combo. It works > > great. > > > > I'm starting to look at what my next rig might be, and have tentatively > > narrowed it down to the K4 and IC-7610. I know the K4 will integrate > with > > the KAT/KPA just as well as the K3 does. > > > > How about the IC-7610? Are there significant drawbacks in the > > integration? How well does the iCom handle things like training the KAT > > for a new antenna via the rig TUNE button, or changing power levels > > between barefoot and QRO, for example? Are power settings per band > > supported? > > > > Any advice appreciated! > > > > 73 de Chuck, WS1L > > > > chandler...@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] XV-144
Hello all, Anyone have a XV-144 for sale contact my via email - my email is good on QRZ - Thanks Ken K5DNL __ 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] Temperature or Warmth of KPA500 when "Off" ?
I use a sine wave UPS in the shack and an IOTA 55 amp power supply for the rigs is plugged into that. Power blips and short outages do not affect the station with the exception that the KPA500 will drop out since it is running on 240V. The UPS provides more than enough time to safely shut down the rig(s) if necessary. Ken WA2LBI On Thu, Jul 1, 2021 at 4:30 PM Jim Brown wrote: > On 7/1/2021 10:49 AM, Bob McGraw wrote: > > As to shutting down the Elecraft equipment. > > It is VERY important to turn the K3 and K3S off at the radio, NOT by > killing power it. When turned off, the rig writes its current state to > memory, so comes back to where it was when turned on next. If power > drops while it's running, it returns to the last saved state. > > But if power drops for a second or so and is restored, the radio can > come back up in a strange state that doesn't work. I've had this happen > at least twice. K6XX taught me to leave the radio off without power for > 15-30 minutes, then turn it back on. Both times I've done this, it came > back just fine to the last saved state. Worst case, it may be necessary > to do an EEINIT. > > 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 wa2...@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
Re: [Elecraft] Temperature or Warmth of KPA500 when "Off" ?
John, You could build a 220/240V outlet with a remote switch using a couple electrical boxes. Ken WA2LBI On Thu, Jul 1, 2021 at 1:01 PM John Nicholson wrote: > Does anyone know if there is such a thing as a 220V power strip? My > searches come up empty handed. I would like to plug the KPA500 into the > strip to turn it totally on off. The power switch on the back of the amp is > inconvenient to reach in my shack. > > John K7FD > > __ 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] Temperature or Warmth of KPA500 when "Off" ?
Phil, No need to unplug the KPA500 when not in use. There is a master power switch on the rear panel that will disconnect everything. Ken WA2LBI On Wed, Jun 30, 2021 at 11:41 AM Louandzip via Elecraft < elecraft@mailman.qth.net> wrote: > I use a clamp on ammeter and a short power cord jumper with the wires > separated where I can clamp over the black wire. That quantitatively tells > me the power being consumed/dissipated. Keep in mind temperature is > intensive whereas heat is extensive. > > Lou W7HV > > On Wednesday, June 30, 2021, 9:32:28 AM MDT, Phil Hystad via Elecraft < > elecraft@mailman.qth.net> wrote: > > Living in the Pacific Northwest and having just gone through a big bath > of heat I have become a temperature detective. Anything not being used > should not be radiating in the infrared spectrum above surroundings. Thus, > all of my radios are off. > > Or, so I thought. I forgot that the KPA500 was still on though off and I > put my hand on the side of the cabinet and discovered some dastardly warmth > — a “no-no” in this non-air-conditioned house. So, I unplugged the KPA500 > for the time being. > > But, I was surprised. I would have guessed that I would not be able to > sense any warmth from the cabinet as the surrounding environment should > have kept it cooler. It was not hot. Just warm to the touch. Definitely > not as warm as my iMac computer that I am using at the moment. > > I should get my infrared temperature sensor and measure the actual > radiated temperature and maybe I will do that some day. > > But, is this normal? I assume that there is a small current powering a > micro processor and its related circuitry but should it be actually that > warm — is there a cpu burning "idle loop" used and thus causing high > current flow thru the processor. > > If it were not for the fact that breakfast is almost ready (steel cut > oatmeal) I would plug the KPA500 back in and wait a while and then measure > the temperature of the cabinet. I will do that later. > > 73, phil, K7PEH __ 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] 432 preamp for EME
Hello all, I'm looking for a pre-amp for 432 mhz - working on EME station - please contact me off list. My email info is good on qrz dot com. Thanks for the bandwidth. 73 Ken K5DNL __ 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] SP3 wanted
Anyone have a SP3 they would like to sell? Thanks Ken WB8PKK __ 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] Don't Shoot!
Richard, If there is any overshoot, my KPA500 hasn't complained. I have both an IC-7300 and an IC-7610. The KPA500 is teamed with the KAT500. The keying line is routed through the KAT500 and the rigs are both set for a 15ms transmit delay. I do not run an ALC line on either rig. The rig power is set to roughly 21%; adjusted slightly as necessary. Ken WA2LBI On Wed, Jun 2, 2021 at 8:10 PM Richard wrote: > Is there an RF overshoot problem using an IC-7300 with a KPA500? > > Richard - W4KBX > _ > __ 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 with Icom 7300
Steven, I use a KPA500 (and KAT500 tuner) with both an IC-7300 and an IC-7610. Both have the transmit delay set for 15ms. The amp is keyed directly from either rig using RCA/RCA cables from the SEND jack to the amp's keying jack. I do not use a keying line buffer between the amp and either rig. The amp has a very low voltage/current keying circuit. I also do not use the ALC line. Transmit power is set at about 21%. The only other important cables are the coax from the radio to the amp and from the amp to the tuner. I also have a cable from the 7300 or 7610 tuner port to the KAT500. Your LDG tuner probably already has the cable. I don't believe the LDG tuner can interrupt the keyng line to the mp the way the KAT500 can. You will need to be careful to put the amp in standby before initiating ay tuning operation so you do not hot switch the amp or provide it with a very high SWR or no antenna connection. GL! Ken WA2LBI On Wed, Jun 2, 2021 at 5:16 PM Steven Roth wrote: > I am running an Icom 7300 with an LGD tuner. Putting together the KPA500 > kit. Can anyone with same setup give me advice on cable hookups between > radio and amp? Are there any IC 7300 settings required? Yes, I have the > manuals. > > Thanks, Steve AD4K > __ 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 K4 now in Rob Sherwood's RX performance table
Hi Dave, I am remoting my VY2TT station. Unfortunately it didn't happen before the Pandemic. For me, the most difficult challenge was remoting the panadapter. K4 = problem solved. Anyone anywhere with a *tablet* and internet can have a virtual K4 at their fingertips. As great a radio as it is, the K3s can't do that. 73, Ken, K6LA / VY2TT On Fri, May 28, 2021 at 1:09 PM David Gilbert wrote: > > I have a K3 with the new synths and nothing in the Sherwood data or > Wayne's post gives me any reason to switch to a K4, especially given the > cost to do so. Bells and whistles are completely secondary for me > compared with basic performance, and I still think that abandoning the > K3s was a mistake. > > 73, > Dave AB7E > > > On 5/28/2021 10:55 AM, Paul GACEK via Elecraft wrote: > > Congrats Wayne and team on the K4 evaluation. > > > > The two other responses do somewhat beg the question about what happens > to the K3s used market and pricing. Not a lot of K3s for sale unlike the > trickle to flood of k3. > > > > At one point, I thought people were hanging on to their K3s waiting for > a K4 upgrade which might well still be valid but I also wonder if people > will simply stay with the K3s as the performance is clearly great and forgo > the flexibility an SDR rig brings. > > > > Paul > > W6PNG > > www.nomadic.blog > > > >> On May 28, 2021, at 10:32 AM, Henry Pollock - K4TMC > wrote: > >> > >> I Love my K3+(new syn)! > >> > >> 73, > >> Henry - K4TMC > >> (K3 #98) > >> > >>> On Fri, May 28, 2021 at 1:22 PM BRUCE WW8II wrote: > >>> > >>> I LOVE my K3s > >>> > >>> Bruce > >>> WW8II > >>> > >>>> On Fri, May 28, 2021 at 12:31 PM Wayne Burdick > wrote: > >>>> > >>>> Sherwood has posted his measurements of the K4D's receiver > performance in > >>>> his table: > >>>> > >>>>http://www.sherweng.com/table.html > >>>> > >>>> We're quite pleased with his test results, which confirm that the > K4/K4D > >>>> is near the top of its class (direct-sampling SDRs). A K4HD would > provide > >>>> somewhat higher dynamic range for those stations in extreme signal > >>>> environments, but the vast majority of operators will find that the > >>> K4/K4D > >>>> more than meets their needs. > >>>> > >>>> I'd like to highlight a few important items in Rob's chart. > >>>> > >>>> First, the K4D has a high 2 and 20 kHz dynamic range value of 101 dB. > >>>> Because it's a direct-sampling radio, this figure will hold at nearly > all > >>>> offsets from strong signals. Second is the block dynamic range number > >>> (128 > >>>> dB), higher than almost every other "pure" SDR measured. Finally, > there's > >>>> the LO noise (local oscillator; 148 to 155 dB) -- again, very > favorable > >>>> compared to all competing SDRs. This is an important number correlated > >>> with > >>>> reciprocal mixing dynamic range (RMDR). > >>>> > >>>> Taken together these demonstrate that the K4D will offer excellent > >>>> performance in crowded band conditions. > >>>> > >>>> Inevitably a question will arise regarding the chart position of the > K4D > >>>> relative to a couple of our other transceivers: the K3S and KX3. > There's > >>> a > >>>> bit of "apples to oranges" in both comparisons. > >>>> > >>>> The K3S uses a superhet receiver architecture. The K4HD will provide a > >>>> receive setting that emulates this superhet performance when and if > it's > >>>> needed. But the "pure" (direct sampling) method used by the K4 (all > >>> models) > >>>> has many advantages. One is the elimination of artifacts associated > with > >>>> crystal filters. Another is that, as a pure SDR, the K4 has a far more > >>>> flexible architecture. We'll be able to provide updates to the receive > >>> and > >>>> transmit digital signal chains that cannot be added to a superhet like > >>> the > >>>> K3S or its competitors. > >>>> > >>>> The
[Elecraft] 70 cm beacon ?
Hello all, I now have XV432 running with the K3 and trying to find asignal to test the rx, Anyone know of a working satellite with a beacon or otherbeacon near Shawnee, Oklahoma on 70 cm ? Not finding much activity here, Antenna to small forEME. Using a small HB 10 ele now working on a 2X20 ele yagi. Thanks agn 73 Ken K5DNL __ 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] W2- Sensor
Anyone have a W2 - DCV/U 200a_144-450 MHz UHF sensor for sale contact me. My email is good on QRZ -- TU 73 Ken K5DNL __ 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] UHF - W2 Sensor
Anyone have a W2 - DCV/U 200a_144-450 MHz UHF sensor for sale contact me. My email is good on QRZ -- TU 73 Ken K5DNL __ 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] W2 Sensor
Hello all, I'm looking for a W2 VHF/UHF sensor - If you have one for sale contact me, My email is good on QRZ, Thanks 73 Ken K5DNL __ 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] RTTY Questions
My radios only do the power ramp up the first time you transmit after changing bands. Doesn’t take that long though. Less than one second I would guess. As noted, it’s the power control loop. Usually it’s not that noticeable. Ken K6MR From: John Reilly<mailto:reill...@gmail.com> Sent: Thursday, April 29, 2021 20:21 To: Elecraft@mailman.qth.net<mailto:Elecraft@mailman.qth.net> Subject: [Elecraft] [K3] RTTY Questions I have two K3 questions: 1. In Data MD, AFSk A, you can set the baud rate to either 45 or 75. Is the baud rate just for the RTTY reader? Does it affect anything else? 2. With my K3s power set to 100w, RTTY starts at a little below 50w and and then fairly slowly builds to 100w (measured on an external wattmeter). I've done a TX calibration -- no change. What is going on? Thanks, - 73, John, N0TA __ 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...@outlook.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] This does not bode well for the chip users of the world
Its affecting everything - Tried to by a bunch of 555 timing chips for the local troops scouting project - none around, glad we don't need them till November. On Thursday, April 29, 2021, 04:50:57 PM EDT, Wayne Burdick wrote: Many off-the-shelf parts are affected as well. Wayne elecraft.com > On Apr 29, 2021, at 1:13 PM, Linda M wrote: > > > Hi Wayne. > I would think the Parts you use are Off the Shelf Semiconductors. > The Auto Industry are Custom Fab semiconductors. > Ray WA6VAB K3 > > From: Wayne Burdick > Sent: Thursday, April 29, 2021 11:40 AM > To: Mark Goldberg > Cc: Elecraft Reflector > Subject: Re: [Elecraft] This does not bode well for the chip users of the > world > > Indeed, it's a ubiquitous curse. Fortunately we stocked up far in advance on > most parts and assemblies. > > Wayne > N6KR > > > > > > On Apr 29, 2021, at 10:39 AM, Mark Goldberg wrote: > > > > For smaller customers that are not buying millions of parts at a time, it > > is even worse, as they have no leverage. That includes the company I am > > working for and I would assume companies like Elecraft. Even for simple > > orders from distributors of in stock parts they are taking a week to ship > > rather than the usual next day shipment. It is really disruptive. > > > > Regards, > > > > Mark > > > > On Thu, Apr 29, 2021 at 10:20 AM Dave Cole wrote: > > > >> An interesting story from OPB dealing with the global shortage of chips... > >> > >> > >> https://www.opb.org/article/2021/04/29/it-s-not-just-cars-ipads-and-macs-suffer-from-semiconductor-crunch/ > >> > >> -- > >> 73, and thanks, > >> Dave (NK7Z) > >> https://www.nk7z.net > >> ARRL Volunteer Examiner > >> ARRL Technical Specialist, RFI > >> ARRL Asst. Director, NW Division, Technical Resources > >> __ > >> 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 marklgoldb...@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 n...@elecraft.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 wa6...@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 backhoe...@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 arch...@mail-archive.com
Re: [Elecraft] Record both RX signal and TX monitor in CW
Config -> LIN OUT -> tap REV/2 button. Use VFO A knob to adjust t= xxx to set transmit monitor level. 0 = none and up from there. Mine are set at 010. YMMV. Ken K6MR From: HP<mailto:pfizenma...@q.com> Sent: Wednesday, April 28, 2021 23:36 To: elecraft@mailman.qth.net<mailto:elecraft@mailman.qth.net> Subject: [Elecraft] Record both RX signal and TX monitor in CW Using AUDACITY and the K3S USB Audio Codec -recording received signals works fine-but is there a way to also record the TX monitor signal ? Obviously I can run another computer running Audacity and simply record the speaker or headphone output bit is there any way to avoid that ? Hank K7HP __ 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...@outlook.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] [OT] Ham Radio near high voltage power lines?
Yes, the “noise guy” is only useful for making contact with the linemen. The one up here really does not want to be bothered. Once I convinced him that I knew what I was doing he just passed on the info to the scheduler. All of my problems so far have been simple items. Lightning suppressors seem to be a big problem up here. One lineman told me they changed vendors to a new style and he’s seen quite a few go bad. My noise guy is still around, office in Cottonwood, just south of here. Friendly enough, and does help the process move forward. Ken K6MR From: Josh Fiden<mailto:j...@voodoolab.com> Sent: Tuesday, April 27, 2021 12:32 To: Ken K6MR<mailto:k...@outlook.com> Cc: elecraft@mailman.qth.net<mailto:elecraft@mailman.qth.net> Subject: Re: [Elecraft] [OT] Ham Radio near high voltage power lines? If it’s something a lineman can fix, that’s easy and you’re home free. In my case the problems were usually either old style insulators, or just an ancient pole that needs to be rebuilt. That requires at least a 2-man crew so work needs to be scheduled. Getting on the schedule can drag out. You’re 100% right, a PUC complaint will get things moving. I didn’t find the noise guy to be super helpful. Just as easy for me to ID the pole and have a lineman write it up. They were already aware which hardware was old junk. I think my noise/comm guy retired. Maybe same guy you had. 73 Josh W6XU Sent from my iPad > On Apr 27, 2021, at 11:59 AM, Ken K6MR wrote: > > “Just be glad all you guys checking power lines don't live in CA with PG&E.” > > It took me several years to finally crack the bureaucracy at PG&E. The > closer you get to the repair techs/linemen, the better it gets. Usually one > or two PUC complaints will get you in contact with the local “noise” guy, who > doesn’t work in the same division as the power guys. He is “communications”. > Turned out my noise guy’s office was only a few miles from my house. But > they keep them a secret. > > Now getting a lineman out is pretty easy, and they are the easiest to work > with. Tell them which pole is making noise and they go to work. > > Ken K6MR > > > From: MIKE ZANE<mailto:n...@comcast.net> > Sent: Tuesday, April 27, 2021 10:33 > To: j...@kk9a.com<mailto:j...@kk9a.com>; > elecraft@mailman.qth.net<mailto:elecraft@mailman.qth.net> > Subject: Re: [Elecraft] [OT] Ham Radio near high voltage power lines? > > Just be glad all you guys checking power lines don't live in CA with PG&E. > For sure. Mike n6zw >> On 04/27/2021 10:15 AM j...@kk9a.com wrote: >> >> >> Probably more RFI will come from neighboring homes but it's easy to >> check with a receiver before installing your tower. If there is noise >> from faulty power line hardware the power company will fix it. >> >> GL >> John KK9A >> >> >> >> ae4pb wrote: >> Just moved to a new QTH and there are high voltage power lines cutting >> across the corner of our property running NW direction. The house is on the >> East side of the lines. >> >> Is it reasonable to expect good operability or is it a wash? I don't want to >> go through the troubles if I'll just be frustrated. >> >> Was looking to do a 60' tower for the high bands (I'll still be below the >> lines height wise), multiband vertical (low bands 80/40/30) , and >> dipole(80/40). >> >> Vertical is planned to have 60 or more radials. >> >> >> >> Thanks in advance. >> >> Jerry D. Moore aka AE4PB >> >> __ >> 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 n...@comcast.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...@outlook.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 j...@voodoolab.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] XV-432 Xverter
Hello All, Looking for a nice XV-432 at a reasonable price, My emailaddress is good on QRZ. Thanks Ken K5DNL __ 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] Ham Radio near high voltage power lines?
“Just be glad all you guys checking power lines don't live in CA with PG&E.” It took me several years to finally crack the bureaucracy at PG&E. The closer you get to the repair techs/linemen, the better it gets. Usually one or two PUC complaints will get you in contact with the local “noise” guy, who doesn’t work in the same division as the power guys. He is “communications”. Turned out my noise guy’s office was only a few miles from my house. But they keep them a secret. Now getting a lineman out is pretty easy, and they are the easiest to work with. Tell them which pole is making noise and they go to work. Ken K6MR From: MIKE ZANE<mailto:n...@comcast.net> Sent: Tuesday, April 27, 2021 10:33 To: j...@kk9a.com<mailto:j...@kk9a.com>; elecraft@mailman.qth.net<mailto:elecraft@mailman.qth.net> Subject: Re: [Elecraft] [OT] Ham Radio near high voltage power lines? Just be glad all you guys checking power lines don't live in CA with PG&E. For sure. Mike n6zw > On 04/27/2021 10:15 AM j...@kk9a.com wrote: > > > Probably more RFI will come from neighboring homes but it's easy to > check with a receiver before installing your tower. If there is noise > from faulty power line hardware the power company will fix it. > > GL > John KK9A > > > > ae4pb wrote: > Just moved to a new QTH and there are high voltage power lines cutting > across the corner of our property running NW direction. The house is on the > East side of the lines. > > Is it reasonable to expect good operability or is it a wash? I don't want to > go through the troubles if I'll just be frustrated. > > Was looking to do a 60' tower for the high bands (I'll still be below the > lines height wise), multiband vertical (low bands 80/40/30) , and > dipole(80/40). > > Vertical is planned to have 60 or more radials. > > > > Thanks in advance. > > Jerry D. Moore aka AE4PB > > __ > 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 n...@comcast.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...@outlook.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] XV432
Hello all, Is the XV432 stable enough for EME digi modes? Thanks agn 73 Ken K5DNL __ 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
In 1967 I started work as a Draftsman Trainee in the Engineering Division of P&G. My group leader told me "There is a timesharing computer terminal (Teletype 33) down the hall that we are not using. Find out if we can do anything with it." That started my progression to programming and eventually microcomputer evaluation and support. I retired in 2001. BTW, we never did "pen and ink", pencil was used and then converted to mylar drawings. Items like paper machines (Charmin, Bounty) are done in right and left pairs (mirror images). The drawings were flipped over to get the identical mirror images. Printing was erased and redone in readable form. Ken WA8JXM On Sat, Apr 24, 2021 at 2:05 PM Dave Fugleberg wrote: > Thanks for the memories Wayne! My High School drafting class was just a > couple of years after yours, and I remember it fondly. Everything from > drafting pencils (with lead of various sizes/hardness) to technical ink > pens on vellum. I enjoyed it so much that I persuaded the instructor to > let me check out one of the old drafting machines for the summer break (I > think it was a Universal). > > Just a few years later, in my first real job as an electronics technician, > I was introduced to electronic schematic capture tools, specifically the > Daisy Systems Logician and some Mentor Graphics systems. I spent hundreds > of hours drawing and updating schematics for the EEs at that company. Those > machines were over $100 grand each at the time, with 10MB hard drives. > Then the wirelists went to automatic wirewrap machines, or later, to > specialized board routing/layout machines that were even more expensive. > > Now we have free or cheap schematic capture software on PCs thousands of > times more powerful for use as hobbyists. Amazing. Yes, a lot has changed > in less than 50 years. > > On Sat, Apr 24, 2021 at 12:10 AM 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. > > > > 45 years later, we're using tools we couldn't have imagined. Modeling > > circuits and objects with millions of parameters and vectors, realizing > > them in virtual space, manipulating them in real time. Testing finished > > products before they're even assembled. > > > > The transformation is mind boggling. Yet the best part now, as it was > > then, is the occasional burst of creative energy that propels an idea > > forward. The feeling of pieces falling into place. Or forcing them into > > place out of sheer necessity. > > > > Most of the time, we think of our new tools and techniques as advances in > > the state of the art. Things we can't live without. But those same > defining > > moments happened just as often in simpler times. > > > > Case in point -- my first real project, a rendition of W7ZOI's > > Micro-mountaineer. Carefully documenting it took several sheets of > > 4-squares-per-inch grid paper, which may still be in my cellar, beneath a > > lifetime of such drawings. With the schematic, I took a lot of pride in > > making the circuits look well-organized, as if that would somehow improve > > my odds. On the PC board, I drew large traces and pads with the > etch-resist > > pen, as if that would somehow appease the electrons. > > > > I etched the PCB, soldered two dozen parts, and connected a 12 V lantern > > battery. Thanks to my paranoia about what would happen if I did it wrong, > > I'd taken my time and done it right. > > > > I was rewarded with a hiss of band noise and a few CW signals on 40 > meters. > > > > Here's to those moments, and to that timeless pursuit: turning > > abstractions into reality. > > > > 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 dave.w...@gmail.com > > > __ > Elecraft mailing list > Home: http://m
Re: [Elecraft] Firesign Theater
Wow, lots of Bozos on the Elecraft buss. I'm still waiting for the K4 electrician to build mine. 73, Ken, K6LA / VY2TT On Thu, Apr 22, 2021 at 11:41 AM Dave Cole wrote: > Do you live in an award winning communications trailer? Can you jump > the hole to the center of the Earth? Is your first name Nick? Do you > know the Lonesome Beet? If so, then you might be a Bozo... > > 73, and thanks, > Dave (NK7Z) > https://www.nk7z.net > ARRL Volunteer Examiner > ARRL Technical Specialist, RFI > ARRL Asst. Director, NW Division, Technical Resources > > On 4/22/21 8:47 AM, Josh Fiden wrote: > > I’m not the only Firesign Theater fan! > > > > Can’t wait to have some quality time hearing receive audio in the cans > (not just a hamfest). > > > > 73 > > Josh W6XU > > > > Sent from my iPad > > > >> On Apr 22, 2021, at 6:49 AM, Henry Pollock - K4TMC > wrote: > >> > >> See Subject Line...Happy Reading! > > > > __ > > 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 d...@nk7z.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 kwidel...@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
Re: [Elecraft] Controlling KAT500/KPA500 with Icom 7610
The cable between the IC-7610 and the KAT500 does two things. First, it supplies power to the KAT500 so it turns on when the IC-7610 is powered up. Second, it allows the TUNER button on the IC-7610 to cause the '7610 to switch to CW mode and transmit an approximate 10W signal. That, in turn, causes the KAT500 to attempt to find a matching solution to the selected antenna. You shouldn't need one of those "tuner plugs" as that function is built into the KAT500 when connected by the AH-4 Molex cable wiring. The above assumes that you have the KAT500 connected to the IC-7610 ANT1 antenna port. If your KAT500 is not working that way with the IC-7610 TUNER button then I would recheck the cable wiring and verify that the KAT500 is connected to ANT1 on the IC-7610. If those are good it is possible there is a problem with the KAT500. Good luck! Ken WA2LBI On Mon, Apr 19, 2021 at 3:06 PM Buck wrote: > Auto-sense works. I just don't understand why Icom/Elecraft would even > suggest hooking up the molex connector to the KAT500 if it doesn't do > anything. It is a waste of time. > > I got the W2GNY plug to fool the 7610 into transmitting as 10 signal and > it works. I guess I will stick with that. > > Buck, k4ia > Honor Roll > 8BDXCC > EasyWayHamBooks.com > > On 4/19/2021 2:31 PM, Ken Winterling wrote: > > Buck, > > > > I have had the IC-7610 and KAT500/KPA500 for almost three years and they > > are a very nice pair (or trio..). The IC-7610 doesn't "control" the > > KAT500 per se. Changing bands/frequencies on the IC-7610 doesn't cause > > any response from the KAT500. Only when the IC-7610 transmits does the > > tuner detect (sense) the RF and then adjust the capacitors and inductors > > to match to the current antenna. An Elecraft transceiver, OTOH, does > > communicate with the KAT500 (and KPA500) and changes > > bands/frequencies/antenna ports as the bands and frequencies are changed. > > > > The KPA500 responds the same way and changes bands by sensing transmit > > RF. You can build a "band data" cable to interface the IC-7620 to the > > KP500 and it will, with restrictions, follow the band selected by the > > IC-7610. The restriction is that Icom's band data voltages do not > > support the WARC bands. As a result, both 24 mHz and 28 mHz select > > 28mHz; both 18 mHz and 21 mHz select 21mHz. So, for all bands except > > WARC, the KPA500 will follow band selections made on the IC-7610 (or > > almost any other Icom such as the IC-7300, etc.). > > > > I can send you a diagram of the band data cable if you would like. It is > > only marginally useful and most ops of non Elecraft gear seem to just > > let the KPA500 (and KAT500) RF sense the transmitted RF to make > > necessary selections. Be sure to read the KAT500 manual section > > regarding "training" your tuner. > > > > GL! > > > > Ken > > WA2LBI > > > > > > > > > > On Mon, Apr 19, 2021 at 2:05 PM Buck > <mailto:radiok...@gmail.com>> wrote: > > > > I made up the cable from the Molex to the TUNE on the KAT500 as > > described and have checked continuity from end to end. All OK. > > > > I have the SEND from the 7610 connected to the PTT RLY on the KAT500. > > > > When I change bands, nothing happens. Is there another setting I > need > > to change in the 7610? > > > > Buck, k4ia > > Honor Roll > > 8BDXCC > > EasyWayHamBooks.com > > > > On 4/19/2021 10:35 AM, Lyn Norstad wrote: > > > Buck - > > > > > > The KAT500 Rev D1 Manual, pages 13, 14 and 15 cover the Icom > > connections. > > > > > > The "AH4" cable (the one you're describing) powers the KAT500 and > > controls > > > the "Tune" function. If yours isn't doing anything, the cable is > > probably > > > defective. > > > > > > What else do you have connected? > > > > > > 73 > > > Lyn, W0LEN > > > > > > > > > -Original Message- > > > From: elecraft-boun...@mailman.qth.net > > <mailto:elecraft-boun...@mailman.qth.net> > > > [mailto:elecraft-boun...@mailman.qth.net > > <mailto:elecraft-boun...@mailman.qth.net>] On Behalf Of Buck > > > Sent: Monday, April 19, 2021 7:42 AM > > > To: elecraft@mailman.qth.net <mailto:elecraft@mailman.qth.net> > > > Subject: [Elecr
Re: [Elecraft] Controlling KAT500/KPA500 with Icom 7610
Buck, I have had the IC-7610 and KAT500/KPA500 for almost three years and they are a very nice pair (or trio..). The IC-7610 doesn't "control" the KAT500 per se. Changing bands/frequencies on the IC-7610 doesn't cause any response from the KAT500. Only when the IC-7610 transmits does the tuner detect (sense) the RF and then adjust the capacitors and inductors to match to the current antenna. An Elecraft transceiver, OTOH, does communicate with the KAT500 (and KPA500) and changes bands/frequencies/antenna ports as the bands and frequencies are changed. The KPA500 responds the same way and changes bands by sensing transmit RF. You can build a "band data" cable to interface the IC-7620 to the KP500 and it will, with restrictions, follow the band selected by the IC-7610. The restriction is that Icom's band data voltages do not support the WARC bands. As a result, both 24 mHz and 28 mHz select 28mHz; both 18 mHz and 21 mHz select 21mHz. So, for all bands except WARC, the KPA500 will follow band selections made on the IC-7610 (or almost any other Icom such as the IC-7300, etc.). I can send you a diagram of the band data cable if you would like. It is only marginally useful and most ops of non Elecraft gear seem to just let the KPA500 (and KAT500) RF sense the transmitted RF to make necessary selections. Be sure to read the KAT500 manual section regarding "training" your tuner. GL! Ken WA2LBI On Mon, Apr 19, 2021 at 2:05 PM Buck wrote: > I made up the cable from the Molex to the TUNE on the KAT500 as > described and have checked continuity from end to end. All OK. > > I have the SEND from the 7610 connected to the PTT RLY on the KAT500. > > When I change bands, nothing happens. Is there another setting I need > to change in the 7610? > > Buck, k4ia > Honor Roll > 8BDXCC > EasyWayHamBooks.com > > On 4/19/2021 10:35 AM, Lyn Norstad wrote: > > Buck - > > > > The KAT500 Rev D1 Manual, pages 13, 14 and 15 cover the Icom connections. > > > > The "AH4" cable (the one you're describing) powers the KAT500 and > controls > > the "Tune" function. If yours isn't doing anything, the cable is > probably > > defective. > > > > What else do you have connected? > > > > 73 > > Lyn, W0LEN > > > > > > -Original Message- > > From: elecraft-boun...@mailman.qth.net > > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Buck > > Sent: Monday, April 19, 2021 7:42 AM > > To: elecraft@mailman.qth.net > > Subject: [Elecraft] Controlling KAT500/KPA500 with Icom 7610 > > > > Anyone who has succeeded, I could use some help. The connection from > > the 7610 molex antenna tuner jack to the "Icom in" jack on the KSAT500 > > doesn't do anything. > > > __ > 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 wa2...@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
Re: [Elecraft] Kpa500 not playing with my IC-7600
Tom, While I do not have an IC-7600 I do use an IC-7610 with a KPA500; the cable should be the same. I use a DIY band data cable to connect the IC-7610 to the KPA500 and it has worked for almost three years. I'm curious as to the exact part numbers of the cables you purchased from the two different vendors. What are the vendor names? Do you have a schematic diagram of either/both cables? If you are interested, I can send you a schematic of the cable I built. 73, Ken WA2LBI On Sat, Mar 27, 2021 at 2:43 PM Tom Ewing via Elecraft wrote: > > Good day, and thanks for reading. > > My newly acquired KPA500 doesn’t want to play with my IC-7600. > > In operate mode when I key the radio, the LEDs on the KPA500 display solid > into the yellow, and there is no output. The amp is not faulting. > > I’m using an Icom 7 pin DIN cable (two actually from two different > vendors) and tried two different radios, both IC-7600s with the same > result. > > In the KPA menus, I have set the “radio” option to “analog”. > > Am I missing something else? > > Thanks in advance. > > Tom > W0XXX > > > > __ 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] How and How Often to Clean KPA-1500 Cooling Systems?
As you know, I run my amp in a single amp, SO2R configuration. During a heavy 2BSIQ session on RTTY, temps reach 90 deg C. Fans go to 5 occasionally. Not a problem. Don’t worry. My power supply does get quite the dust bunny on top. I just hit it with the vacuum every week when doing the shack. I haven’t noticed the same problem with the RF deck. Perhaps with the fans on super high speed it blows itself out. I’ve had the power supply case off twice, and didn’t see a build up internally. So I’m pretty sure it’s not an issue if you vacuum it regularly. I have the amp and power supply in a bookshelf type cabinet in the closet. One thing I did when I first set it up was to make a seal around the back of the RF desk. It is a piece of cardboard, stapled to the back edge of the bookshelf, and cut to just fit around the rear of the amp. This keeps the amp from sucking in hot exhaust from the top vents back into the amp. Of course this won’t be a problem if you have the amp on a desk with nothing above it. I have the minimum recommended clearance of 2” above the amp, and 4” above the power supply. Ken K6MR From: N4ZR<mailto:n...@comcast.net> Sent: Saturday, March 27, 2021 13:09 To: elecraft@mailman.qth.net<mailto:elecraft@mailman.qth.net> Subject: Re: [Elecraft] How and How Often to Clean KPA-1500 Cooling Systems? I'm uncomfortable with temp above 70C. I infer from the manual that the displayed temp is that of the final transistor heat sink, and they say it will hard fault at 112C. Not in my shack! Still looking for an answer to the cleaning question, though, particularly for the power supply. 73, Pete N4ZR Check out the new Reverse Beacon Network web server at <http://beta.reversebeacon.net>. For spots, please use your favorite "retail" DX cluster. On 3/27/2021 2:44 PM, Jim Brown wrote: > On 3/27/2021 9:23 AM, N4ZR wrote: >> The other day I noticed some buildup of dust on the top vents of my >> power supply. > > Neighbor K6XX is the mfg engineer for both of Elecraft's amps. Bob > lost everything (except one of his towers) in a big wildfire this > summer, along with three other hams I know. For a contest a few months > ago, he borrowed my KPA1500, and when he returned it, told me it was > super dusty. My shack is pretty dusty, and I was running the fans all > the time, often at a high setting, because I use WSJT modes on 6M and > 160 a lot. His advice was to set the fan speed default to zero and let > the amp determine the fan speed. Using 120 sec TX cycles at 1kW on > 160, I've seen 95C temps, and the amp is still happy. I wouldn't do > that on 6M, where the amp is least efficient. > > 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 n...@comcast.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...@outlook.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] FW: Sudden KpA1500 power reduction
“just not publically posted.” Which seems very strange since they post for all the radios, which are far more complex. When I asked about a schematic, I was told “No”. Same with some updates. Just seems strange. Ken K6MR From: Dr. William J. Schmidt<mailto:b...@wjschmidt.com> Sent: Sunday, February 21, 2021 12:04 To: elecraft@mailman.qth.net<mailto:elecraft@mailman.qth.net> Subject: [Elecraft] FW: Sudden KpA1500 power reduction I've had the KPA1500 at my contest station in the Caribbean go south on me (and another contest group) twice. Both times I was able to get Rene on the phone.. go through the amp... and troubleshoot it over the phone. They have always shared parts of the schematic with me when necessary. It's nothing secret... just not publically posted. Big shout out to Rene at Elecraft... Excellent tech. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Ken K6MR Sent: Sunday, February 21, 2021 1:11 PM To: Dana Roode K6NR Cc: Elecraft Reflector Subject: Re: [Elecraft] Sudden KpA1500 power reduction It wouldn't be above your skill level if they would release the schematics. Solid state amps are not any more complicated than tube amps, and I think easier (and safer!) than tubes. My early KPA1500 (#76) has been great, but not having the schematics really bugs me. I know everyone at Space Galactic Headquarters is busy with the K4 but posting the KPA1500 schematics would not take more than a few minutes. And my amp is way out of warranty so they aren't risking anything. Internally it looks like a pretty generic design. I've reverse engineered the power supply unit but the RF deck is going to take some time. I'd rather not if I don't have to. Ken K6MR -- This email has been checked for viruses by AVG. https://www.avg.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...@outlook.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] Sudden KpA1500 power reduction
Replacing the LDMOS devices is not that difficult. Take a look at W6PQL’s site, he has a video on how to do it. http://www.w6pql.com/video/ldmos2copper.wmv There also seems to be a dearth of information on the upgrades. I was also told that some upgrades are “factory only”. I don’t think they’ve ever done that before. Ken K6MR From: Dave<mailto:rocke...@gmail.com> Sent: Sunday, February 21, 2021 11:06 To: Dana Roode K6NR<mailto:dana.ro...@gmail.com> Cc: Elecraft Reflector<mailto:Elecraft@mailman.qth.net> Subject: Re: [Elecraft] Sudden KpA1500 power reduction I will say the Rene at Elecraft was excellent when I sent my amp RF deck back for updates over a year ago. There were several updates that were performed while it was visiting the left coast. Elecraft support and repair is excellent. The LDMOS devices in my KPa1500 are soldered to the copper heat spreader. Even though I have a Bertha soldering iron I would not attempt to change them myself. 73 & Good luck, Dave wo2x Sent from my waxed string and tin cans. > On Feb 21, 2021, at 2:00 PM, Dana Roode K6NR wrote: > > > Ok thanks everyone, I will lug the amp back home and contact Elecraft. Ive > had it for about 2 years, everything breaks now and again. I've got my > AL1200 here, I could use it at least when I'm here locally. I can't count > how many times I repaired that amp. But the KPA is above my skill level. > > Dana > > >> On Sun, Feb 21, 2021 at 9:32 AM Frank Scolaro >> wrote: >> >> Happened to me several months ago... one LDMOS out! same symptoms. You >> need the power with such great band conditions... >> >> GL >> Frank, W2YK >> >> >> >> >> -Original Message- >> >From: rocke...@gmail.com >> >Sent: Feb 21, 2021 12:23 PM >> >To: 'Dana Roode K6NR' , 'Elecraft Reflector' >> > >> >Subject: Re: [Elecraft] Sudden KpA1500 power reduction >> > >> >Just my guess is one of the LDMOS devices let out the magic smoke? >> >Just a thought... >> > >> >Dave wo2x >> > >> > >> >-Original Message- >> >From: elecraft-boun...@mailman.qth.net On >> >Behalf Of Dana Roode K6NR >> >Sent: Saturday, February 20, 2021 9:16 PM >> >To: Elecraft Reflector >> >Subject: [Elecraft] Sudden KpA1500 power reduction >> > >> >I'm in the ARRL CW contest this weekend and the KPA1500 has been working >> >fine. However, a few minutes ago I noticed I was getting about half the >> >output power on 20 meters that I typically get with around 30 watts drive >> >(about 600w vs 1200w). PA current is less than normal, around 30a. >> >Similar problem on the higher bands, I can no longer get 1000w. On 40m I >> >can, but it requires more drive. >> > >> >Seems like something died in the amp; I'm not familiar with the design, but >> >perhaps an output module. No errors or ill behavior from the amp other than >> >the loss of power. >> > >> >I will contact Elecraft support unless there is something I'm missing here. >> >I just looked in the archive and see that this has happened to others I >> >use the amp remotely so I guess I'll have to take it home with me. >> > >> > Dana >> >__ >> >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 rocke...@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 fscol...@mindspring.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...@outlook.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
