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1. Re: [Amps] 2K Classic X filament issue (score: 1): Author: Pete Smith N4ZR <pete.n4zr@gmail.com>; Date: Tue, 3 Aug 2021 22:20:46 -0400; My SB-220 experienced intermittent filament on one 3-500. I think the problem was that the filament clips gradually lost temper from the conducted heat. I was able to swap for other clips from the; /archives//html/Amps/2021-08/msg00007.html (9,226 bytes)
2. Re: [Amps] 2K Classic X filament issues (score: 1): Author: Pete Smith N4ZR <pete.n4zr@gmail.com>; Date: Wed, 4 Aug 2021 08:57:29 -0400; Hi Don - It's been quite a few years, but I think that's right. I remember that I also had the problem with solder melting out of the tube pins, though that stopped happening once I swapped the spri; /archives//html/Amps/2021-08/msg00009.html (9,485 bytes)
3. Re: [Amps] Drifting Power (score: 1): Author: Pete Smith N4ZR <pete.n4zr@gmail.com>; Date: Sat, 16 Oct 2021 10:32:16 -0400; FWIW, I see something very similar in my KPA-1500. I had assumed it was software protecting the transistors, just in case. 73, Pete N4ZR Check out the new Reverse Beacon Network web server at<http:/; /archives//html/Amps/2021-10/msg00069.html (7,917 bytes)
4. Re: [Amps] new Alpha (score: 1): Author: Pete Smith N4ZR <pete.n4zr@gmail.com>; Date: Sat, 22 Jan 2022 08:11:46 -0500; How do we/you know that Alpha isn't planning on a solid-state amp? 73, Pete N4ZR Check out the new Reverse Beacon Network web server at<http://beta.reversebeacon.net>. For spots, please use your favo; /archives//html/Amps/2022-01/msg00060.html (8,809 bytes)
5. Re: [Amps] 8877 (score: 1): Author: Pete Smith N4ZR <pete.n4zr@gmail.com>; Date: Wed, 26 Jan 2022 17:40:25 -0500; Puzzling, since the pictures are all of Eimac tubes, but it's pretty clear they're planning a house brand, presumably made in China. I think they ought to clean that up. 73, Pete N4ZR Check out the; /archives//html/Amps/2022-01/msg00096.html (8,959 bytes)
6. Re: [Amps] 10 kw CCS on 6M. Part-3 (score: 1): Author: Pete Smith N4ZR <pete.n4zr@gmail.com>; Date: Fri, 9 Sep 2022 08:29:23 -0400; OK, I give up - what's the point of 10 KW CCS? 73, Pete N4ZR Check out the new Reverse Beacon Network web server at<https://reversebeacon.net>. For spots, please use your favorite "retail" DX cluster; /archives//html/Amps/2022-09/msg00002.html (8,408 bytes)
7. Re: [Amps] 10 kw CCS on 6M. Part-3 (score: 1): Author: Pete Smith N4ZR <pete.n4zr@gmail.com>; Date: Fri, 9 Sep 2022 21:53:21 -0400; I actually agree with a lot of what Don says, though I think that reference to "hoity toity nonsense" is frankly unjustified. Of course, we all drive cars that will far exceed the speed limit, and i; /archives//html/Amps/2022-09/msg00007.html (10,899 bytes)
8. Re: [Amps] Pem Nuts ? (score: 1): Author: Pete Smith N4ZR <pete.n4zr@gmail.com>; Date: Tue, 25 Oct 2022 10:03:29 -0400; https://catalog.pemnet.com/viewitems/nuts-types-s-ss-cls-clss-cla-sp/self-clinching-nuts-types-s-ss-cls-clss-sp-unified/?utm_source=google_smart&utm_campaign=Branded&utm_keyword=pem%20nuts&utm_term=p; /archives//html/Amps/2022-10/msg00058.html (9,430 bytes)
9. Re: [Amps] 10 kw CCS on 6M..using the 3CX-6000A7...Part 11 (score: 1): Author: Pete Smith N4ZR <pete.n4zr@gmail.com>; Date: Tue, 22 Nov 2022 17:10:52 -0500; I've seen earlier parts of this series, but never a rationale for the existence of such an amplifier. It's beautifully built, but... 73, Pete N4ZR Check out the new Reverse Beacon Network web server; /archives//html/Amps/2022-11/msg00050.html (8,503 bytes)
10. Re: [Amps] SCAM ALERT - Ham Radio Equipment For Sale "Moving To Australia" (score: 1): Author: Pete Smith N4ZR <pete.n4zr@gmail.com>; Date: Wed, 22 Mar 2023 10:55:10 -0400; I'm the moderator of RBN-OPS@groups.io, and even before I saw this message I rejected an attempt to post this on my group. Good to see that I wasn't being over-suspicious. 73, Pete N4ZR The email cl; /archives//html/Amps/2023-03/msg00021.html (8,749 bytes)
11. Re: [Amps] Foster Transformer Company (score: 1): Author: Pete Smith N4ZR <pete.n4zr@gmail.com>; Date: Fri, 10 Nov 2023 16:59:06 -0500; Horizontally, too. I briefly had a 1950s Crosley automobile, which some friends and I dismantled to build a 4-cylinder dragster 73, Pete N4ZR In addition to WLW on 700 kHz, WLWT on channel 5, and th; /archives//html/Amps/2023-11/msg00017.html (8,739 bytes)
12. Re: [Amps] High Voltage Switching Supply (Bob D.) (score: 1): Author: Pete Smith N4ZR <pete.n4zr@gmail.com>; Date: Sun, 3 Mar 2024 09:26:30 -0500; I must have missed something at the beginning of this thread - 2200 volts is all fine, but I presume the current is very low. So why do we care (us amps people)? 73, Pete N4ZR There's a piece by VK3; /archives//html/Amps/2024-03/msg00008.html (9,407 bytes)
13. Re: [Amps] Slow start-up of Amps on CW (score: 1): Author: Pete Smith N4ZR <pete.n4zr@gmail.com>; Date: Mon, 11 Mar 2024 15:29:26 -0400; On the other hand, there are workarounds available. People started telling me that my callsign was being clipped soon after I got my KPA-1500 (my old SB-220 had homebrew QSK). I found lead-time set; /archives//html/Amps/2024-03/msg00032.html (10,348 bytes)
14. Re: [Amps] Slow start-up of Amps on CW (score: 1): Author: Pete Smith N4ZR <pete.n4zr@gmail.com>; Date: Tue, 12 Mar 2024 21:24:53 -0400; I think this thread is drifting off-topic. We're not talking about the waveform of CW, but how long it takes after PTT before the KPA-1500 is ready to amplify incoming signals. I've been there - at; /archives//html/Amps/2024-03/msg00052.html (11,484 bytes)
15. Re: [Amps] MFJ (score: 1): Author: Pete Smith N4ZR <pete.n4zr@gmail.com>; Date: Thu, 25 Apr 2024 21:22:35 -0400; Wow, what sad and disruptive news. My first purchase from MFJ was one of his audio filter boards (BX-2?). I certainly hope that other entrepreneurial souls will purchase pieces of the company. 73,; /archives//html/Amps/2024-04/msg00017.html (11,709 bytes)

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