Re: [Elecraft] Whats the deal with my K2/100
How about a known good watt meter post rig to confirm what the K2 is indicating. Basic stuff (of course this will now start a debate over PEP vs. avg., Tol. etc) but you get the idea - you will know that the output power is really within reason. 73 Rodger N4NRW Original message Date: Wed, 24 Feb 2010 08:46:53 -0800 From: Tom w7t...@dishmail.net Subject: [Elecraft] Whats the deal with my K2/100 To: elecraft@mailman.qth.net Hello, I just purchased a k2/100.I have been just turning down the power till it says 10 I assume this is 10watts.I have been getting repeated reports that they can't believe I'm running 10watts QRP. 1 guy just called me a liar all together! Most these guys are not local but some are. So I thought I better ask before arguing my QRP status. FYI turned the dial down on my K2/100 till the display read 0.1 and got a 58 from Idaho to Montana on 160m the operator would not believe my wattage. I do run a 160m loop for an antenna So I thought I would ask around am I really doing a watt when the display reads a watt? 73, Tom-W7TMD ARCI No. 13512 NAQCC No.4094 SKCC No.6461 Polar Bear No.217 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] New K3 NR algorithms
Joe, same here! Big difference in changing settings from F1-1 to F4-4 in one continuous motion vs. your method with an exit NR and turn it back on. Hummm? I also notice that if you use your method with a noticeable NR improvement when switched on and then go into adjust mode the effect switches back to the normal operation where the effectiveness is not as noticeable. Looks like you have to adjust, turn off NR, then turn NR back on for each setting. Maybe the guys missed some sort of reset between filter steps? Rodger Original message Date: Thu, 20 Aug 2009 16:11:42 -0700 From: Joe Planisky jp...@jeffnet.org Subject: Re: [Elecraft] New K3 NR algorithms To: Elecraft Discussion List elecraft@mailman.qth.net I finally got a chance to load up the new FW and try the new NR. Like everyone else, I didn't notice much if any difference between F1-1 and F4-4 while turning the knob. However, I found that there WAS a difference if I dialed in a new setting, then turned NR off and back on. In other words (in CW mode): 1) set NR to F1-1. 2) turn NR off, then back on. Notice the sound. 3) set NR to F4-4 4) turn NR off, then back on. Notice the sound. When I do that, F4-4 is clearly more aggressive than F1-1. 73 -- Joe KB8AP On Aug 20, 2009, at 1:25 AM, WA9VEE wrote: ... I also see little difference now between the F1 through F4 settings. They all sound pretty much the same to me. I think I would like to see more difference in effects. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 FW3.25 Auto-Notch Filter problem.
I'll add to the list as well. On WWV in SSB mode Auto notch will not mute/find the tones. Manual mode works fine. Bet it will be fixed in short order! Rodger Original message Date: Sat, 15 Aug 2009 10:39:34 -0400 From: Mike Harris mike.har...@cwimail.fk Subject: Re: [Elecraft] K3 FW3.25 Auto-Notch Filter problem. To: elecraft@mailman.qth.net G'day, Broken here also. I have a multi tone QRM (digital junk) signal at about 14213kHz and previously auto notch would take them all out in a couple of seconds, now it doesn't touch them. I tried notching an Ethernet signal at 14030kHz in SSB mode and only when it was single signal, BW reduced to 150Hz did it try feebly to do anything. More than one signal and it doesn't bother. Manual notch is OK but as others have suggested, it could be sharper. All this observed on Spectrogram 16. Regards, Mike VP8NO - Original Message - From: Stewart stew...@baker.nildram.co.uk To: Alex Ponomarenko ur5...@gmail.com; elecraft@mailman.qth.net Sent: Saturday, August 15, 2009 5:07 AM Subject: Re: [Elecraft] K3 FW3.25 Auto-Notch Filter problem. Yes, I am finding the same here - AGH ! The Manual notch is fine, however, although there is a slight notching action in Auto it is virtually useless. Some'at wrong with the DSP code... 73 Stewart G3RXQ On Sat, 15 Aug 2009 11:58:50 +0300, Alex Ponomarenko wrote: After installing last 3.25 beta-version, in my K3 does not working Notch-Filter in Auto-Mode. With manual Notch all Ok. Please check this in yours K3. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.392 / Virus Database: 270.13.58/2304 - Release Date: 08/15/09 06:10:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] (OT) smoke test
I too have had one of these let go. I have a lamp near my reading chair that used a 3 way Fluorescent lamp. While reading one day I began to hear a hissing sound followed by a loud bang (like a fire cracker) and lights out. Upon examination the class envelope of the tube near the base had overheated to the point of flowing and eventually bursting. Not a great feeling - and again if I had not been home at the time to pull the plug? Do these things have a safety issue? Rodger, N4NRW Original message Date: Sat, 04 Oct 2008 20:39:55 -0800 From: Jim Wiley [EMAIL PROTECTED] Subject: Re: [Elecraft] smoke test To: [EMAIL PROTECTED] Cc: Elecraft@mailman.qth.net Ralph - Many - not all - fluorescent lamps (I am assuming you are talking a CFL , or Compact Fluorescent Lamp) have a small resistor used as a fuse for the ballast. The ballast is in the base which supports the discharge tube (the fluorescent portion). The ballast develops the voltages needed to initially fire the tube (when cold) and limit the current once the arc is initiated. It consists of several capacitors and resistors as well as a few semiconductors. As the tube ages, the current draw increases. At some point, it becomes too much, and the ballast fails. To prevent a really catastrophic failure, a small resistor (typically a 1/8 or 1/4 watt unit) is used as a fuse. Overload destroys the resistor, cutting off the current. Why a resistor? They are much less expensive than fuses, particularly at low current ratings! The light from a CFL comes from a mercury-vapor arc inside the tube, which emits large amounts of ultraviolet light. The phosphor on the inside of the tube converts the ultraviolet energy into visible light. - Jim, KL7CC Ralph Tyrrell wrote: As I sit at my computer the radio desk is to my back. I heard a burst of static behind me. That was odd since no radios were on. The only thing on at the radio desk was the desk lamp and a power supply that keeps the batteries charged. Both are plugged into a strip that switches power to them. I went over to the radio desk and looked at my equipment, both off. Still puzzled I turned on the 2m rig, all normal. Then I turned on the K3. All normal. I turned them off again. The K1 sits by, not connected to anything at this time. Still puzzled I sat there wondering if something had happened to my battery bank or one of the batteries. I have three 26AH batteries in parallel. Each battery is fused before to goes to a fused buss. Then my nose began to notice the smell we all dread. Something electrical was over heated. Still I did not noticed a symptom I should have noticed earlier, the desk lamp was off. I touched the top of the lamp and it was very hot. The bulb, a 13 Watt Florissant had failed. The ceramic base was too hot to touch. How often do Florissant bulbs fail this way? I had the feeling that if I were not there a fire may have started. 73, Ty, W1TF, K3 #696, K1 #1423 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 MCU 2.38 Software Bug?
Same here. I have the 10Khz FM, 2.7 and 1.8. Use the FM filter for AM rx. See the same behavior others are describing with 2.38. Rodger Original message Date: Thu, 18 Sep 2008 20:50:38 +0200 From: Steef PA2A [EMAIL PROTECTED] Subject: Re: [Elecraft] K3 MCU 2.38 Software Bug? To: [EMAIL PROTECTED], elecraft@mailman.qth.net, [EMAIL PROTECTED] Don, I have found the same problem. I have the 6K, 2K8, 500, 400 and 250 Hz at the moment. All three narrow filters show LO 0.85 and HI 2.15 in AM mode. The BW shown during switching from HI to BW is 2.70 and not 500, 400 and 250 Hz as one would expect. I am wondering why the center frequency *1.50 always remains constant for all filters in SSB. When lowering the bandwidth to 1 KHz, signals can be heard best at a lower shift of about 0.65 KHz. With my K2 I used the CW audio filter at 550 Hz sometimes to copy SSB stations with adjacent strong signals. 73 's Steef PA2A K2 4654 K3 1184 - Original Message - From: Don Nesbitt [EMAIL PROTECTED] To: elecraft@mailman.qth.net; [EMAIL PROTECTED] Sent: Thursday, September 18, 2008 7:06 PM Subject: [Elecraft] K3 MCU 2.38 Software Bug? Basic Parameters: K3/100 with KRX3 - MCU 2.38, FPF 00.02, DSP1 1.90, DSP2 1.90 Main Board: FL2 = 2.8; FL3 = 2.1; FL4 = 400 Hz Sub RX Board: FL2 = 2.8; FL4 = 400 Hz AM Rx Enabled for FL2 Main and FL2 Sub AM Tx not Enabled I do NOT have a 6.00 AM Filter but am listening to AM through my 2.8 roofing filter - which sounds pretty good! Action: Set Mode to AM. Displayed Mode changes to AM and displayed XFIL changes to FL2 (which would be expected as I have a 2.8 in FL2 and it is enabled for AM receive) with High showing 3.00 and Low showing 0.00. BW shows 6.00. FC shows 1.50. Surprise Action - Possible Bug Now Tap XFIL button. Displayed XFIL stays on FL2 - but - bandwidth gets very narrow. High now shows 2.20 and Low shows 0.80. FC still shows 1.50 and BW now shows 2.8. But, the graphic display of bandwidth narrows to what would be shown if I had BW set to 400 Hz and the recovered AM audio sounds like it! The BW showing 400 Hz is as it should be since 2.20 - 0.80 is 400 Hz. Press and release NORM and I am back to where I started with Rx as it should. Even if I Normalize I and II so all is well and then do the tap the narrowing scenario repeats! What I've Tried: I've downloaded and sent All Firmware to K3 twice with the same result. I've used the K3 Utility Version 1.1.6.3 to verify the filter settings that I made in the Config Menu. I've used the K3 Utility to set the filters and verified them in the Config Menu. I don't know if this action occurred in previous versions as I've stayed up with all Beta releases but frankly never tapped the XFIL button before while listening to AM. Questions: Can anyone duplicate this seemingly strange action when in AM mode and tapping the XFIL button? If it can't be duplicated, any idea(s) what I've got set incorrectly? Is this simply a consequence of not having the 6 kHz AM filter and listening to AM with the 2.8? Thanks in advance. '73 es gud dxing -- Don N4HH K3/100/KRX3 #83 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 Miscellaneous Build Questions
Jon, You will be happy to hear that the Gang at Elecraft have solved component procreation issue with the release of the K3. However, they seem to have created a new time dimension that causes delivery of the K3 to take light years! Enjoy the build of the K2 73 Rodger N4NRW Original message Date: Sun, 10 Aug 2008 07:38:54 -0700 (PDT) From: Jon Perelstein [EMAIL PROTECTED] Subject: [Elecraft] K2 Miscellaneous Build Questions To: elecraft reflector elecraft@mailman.qth.net I just started building a K2 and I have a couple of questions: 1. On the Control Board, when I installed capacitor C4 (0.47 microF, monolithic cap 474), it somewhat overhangs and touches diode D1 (1N4148). C4 is a rather thick (fat) capacitor and there doesn't seem to be any way to install it without it overhanging and touching D1. Is this okay? 2. After getting through pg. 14 and most of the capacitors on pg. 15, I noticed that my new diagonal cutters (bought from Radio Shack) are slightly magnetic -- that is, they attract and pick up the clipped leads. I have of course gotten rid of them -- but do you think that using those cutters could have damaged anything? Fortunately, I had not gotten to any of the ICs or transistors when I discovered this. 3. Why is it after getting all the way through pages 14, 15, and 16, it appears that there are more components than ever remaining to be installed?? Do they procreate at night when I'm not looking? Jon KB1QBZ K1 #2552 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] TX gain ?
Anyone seen this issue: When adjusting 50 watt TX GN (gain) on each band, some bands do not allow entire adjustment range to obtain 50 watts? i.e. while adjusting VFO A for exactly 50 watts the VFO B display may move in the following steps: 46, 47, 52, 57 watts and skip over - for example - 48, 49, 50, 51, 53 etc. This results in some band calibrations being above 50 watts and some being below due to the unavailability of all the power settings? This seems odd. Running Beta 2.23, 1.88 Rodger N4NRW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 - Strange problem on 10 Meter SSB with power out
If this has previously been discussed - please forgive me. This weekend ten meters was open (as much as it could be at the bottom of a cycle) and the 10-10 contest gave me a great opportunity to try out the 10 meter band on my recently completed K3 #1318(latest firmware). All seemed well until I noticed that my power output on SSB was down as indicated on the K3 power meter and where I normally see 100 watt pep output on my tuners average reading meter. So I grabbed my Bird 43 (with PEP option) and a dummy load. Sure enough, only about 50 watts PEP even though the control on the K3 is at 100? Placed the K3 into tune and 95-100 watts out? Go back to SSB and now the PEP power is back where it should be at approx 100 watts PEP. After a few more SSB transmission - low power again(still connected to the Bird and dummy load). This went on for a while as I checked and re-checked all of my mic and comp settings. All other bands worked correctly. Power supply not current limiting, all connections/cables good (connection to my stati o! ! n ground verified), fresh battery in my studio mic, SWR on ten meter antenna below 1.4:1 etc. etc. Took the LPA heat sink bottom cover off to make sure the LPA transistors were making good thermal contact. (I had added a spot of heat sink compound to each transistor during my assy process) There was a clear outline of the TO-220 transistor and an even film of compound indicating good pressure and contact. Put everything back together. Haven't seen the issue again - yet? But I am not convinced I did anything to make it go away? Anyone else had this experience? Rodger N4NRW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Firmware glitch on Xtal Filter selection?
I recently completed my K3 #1318 and updated to the latest firmware. On another post to this group I recall someone (Dr. Garland?) asking about the same issue I am seeing on my rig. I have set up xtal filters as follows FL1 - open but assigned to FM (FM filter back ordered) FL2 2.7 kHz, FL3 1.8 kHz, FL45 empty. I have set up the filter receive assignments per mode and the TX filter assignments as per the manual. Here is what I am experiencing. Any time I go into the config menu for any changes(and maybe the main menu as well - can't recall) when I come out of the menu the filter auto selection during DSP bandwidth changes acts odd (In SSB mode for sure, I haven't noticed other modes). i.e. selecting a DSP bandwidth wider than 2.7 kHz now selects the FL1 position which is empty! Receiver goes dead! If I simply press the band up or down button and try this again the rig now performs correctly and ignores FL1 that is not assigned to SSB or CW etc. All remains well until I! ! go into the Config menu again??? Rodger N4NRW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 Assembly issue with bottom Heat Sink cover!
Hey gang, Just spent 4 hours assembling K3 s/n 1318 and all went well except for one slight but potentially serious hardware problem. When installing the bottom heat sink cover over the LPA I noticed that the required 4-40 x 1/4 screws bottomed out in the standoffs under the TO-220 LPA transistors before they would compress the cover to the transistors (and yes I can measure screw lengths). This will leave a gap between the transistor and the heatsink and not provide proper heat sinking! It is strange to note that one of the Manual Errata changes was to point out that the heat sink cover was slightly thicker than the other bottom cover. Wonder if this part has changed? Any way, I added 3 #4 stainless steel flat washers under the screw heads and that allows the screws to fully compress the heat sink against the transistors. For a belts and suspenders fix I also added a dab of heat sink compound to the transistors as well. I did not check the screws coming from the top side of t! ! he LPA assy to see if the factory may have used the wrong/longer screws taking up extra standoff threads. A #4 split washer could have also been left off of this top side screw and create the same issue or tol. stack up of the parts? Any way HEADS UP! 73, Rodger N4NRW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] K3 Assembly issue with bottom Heat Sink cover!
Thanks Bob! I bet this is it. At midnight I was beginning to go cross eyed. I must have missed the internal tooth lock washers! Better RF ground this way as well. Thanks Gang! 73, Rodger N4NRW Original message Date: Wed, 30 Jul 2008 07:06:04 -0500 From: Bob Serwy [EMAIL PROTECTED] Subject: RE: [Elecraft] K3 Assembly issue with bottom Heat Sink cover! To: [EMAIL PROTECTED] According to the assembly manual page 55, The NOTE states The three screws marked A must be 1/4 black pan head with inside tooth lock washers under the screw heads. Also read the CAUTION. Bob Serwy - N9RS -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Wednesday, July 30, 2008 6:51 AM To: Elecraft@mailman.qth.net Subject: [Elecraft] K3 Assembly issue with bottom Heat Sink cover! Hey gang, Just spent 4 hours assembling K3 s/n 1318 and all went well except for one slight but potentially serious hardware problem. When installing the bottom heat sink cover over the LPA I noticed that the required 4-40 x 1/4 screws bottomed out in the standoffs under the TO-220 LPA transistors before they would compress the cover to the transistors (and yes I can measure screw lengths). This will leave a gap between the transistor and the heatsink and not provide proper heat sinking! It is strange to note that one of the Manual Errata changes was to point out that the heat sink cover was slightly thicker than the other bottom cover. Wonder if this part has changed? Any way, I added 3 #4 stainless steel flat washers under the screw heads and that allows the screws to fully compress the heat sink against the transistors. For a belts and suspenders fix I also added a dab of heat sink compound to the transistors as well. I did not check the screws coming from the top side of t! ! he LPA assy to see if the factory may have used the wrong/longer screws taking up extra standoff threads. A #4 split washer could have also been left off of this top side screw and create the same issue or tol. stack up of the parts? Any way HEADS UP! 73, Rodger N4NRW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] (no subject)
The LNG wait is over! K3 S/N 1318 Order date 2/29/2008 Ship date 7/22/2008 Arrived7/29/2008 That puts it exactly 5 months to the day from order to arrival. Let the construction begin! 73, Rodger N4NRW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 on the way
My K3 was ordered as a kit. Rodger N4NRW Original message Date: Tue, 22 Jul 2008 22:02:51 -0500 From: Jim Miller [EMAIL PROTECTED] Subject: Re: [Elecraft] K3 on the way To: [EMAIL PROTECTED], elecraft@mailman.qth.net Is your a factory unit? That may extend the time a bit. 73, Jim - Original Message - From: [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Tuesday, July 22, 2008 8:12 PM Subject: [Elecraft] K3 on the way Notification received today that my K3 is scheduled for delivery on July the 29th. This is exactly 5 months to the day after order placed (Feb. 29th)- so much for the 4 month target! FM filter must be on back order as it was not listed in the notification. Rodger N4NRW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 on the way
Notification received today that my K3 is scheduled for delivery on July the 29th. This is exactly 5 months to the day after order placed (Feb. 29th)- so much for the 4 month target! FM filter must be on back order as it was not listed in the notification. Rodger N4NRW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Switching Supplies
Pardon me if someone has already pointed this out (I have not followed the entire thread)- my past experience with linear supplies reveals an all too often failure mode of either shorted pass transistors or blown control chips (LM-723). In either case the output voltage from the supply can rise to the unregulated DC filtered voltage (usually 20+ volts) and cook anything attached. A fast and effective crowbar, if designed correctly, will clamp this voltage before it destroys your expensive equipment. With switchers my experience has been that one or more of the switching FETs or high speed diodes fail and the supply just dies (no output). Which one would you rather have connected to your brand new K3 if it failed? 73 Rodger N4NRW counting down the day till the K3 arrival! ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
