- 21. Re: [Amps] Attenuation of signal (score: 1)
- Author: John Simmons <jasimmons@pinewooddata.com>
- Date: Sun, 21 Jan 2018 08:46:06 -0600
- The antenna relay contacts would cause this problem. Clean the contacts with De-Ox-It. -John NI0K john shea <mailto:w3khg@triad.rr.com> Saturday, January 20, 2018 9:53 AM The Amp International LK500-
- /archives//html/Amps/2018-01/msg00121.html (8,061 bytes)
- 22. [Amps] Help with Henry 2K-2 (score: 1)
- Author: John Simmons <jasimmons@pinewooddata.com>
- Date: Wed, 05 Sep 2018 07:28:54 -0500
- My workhorse Henry is broken, alas! I'm looking for suggestions. The amp has been used almost daily for the last year. One morning I turned it on and was listening to a net, so the amp was unkeyed an
- /archives//html/Amps/2018-09/msg00001.html (7,433 bytes)
- 23. Re: [Amps] Help with Henry 2K-2 (score: 1)
- Author: John Simmons <jasimmons@pinewooddata.com>
- Date: Sun, 09 Sep 2018 15:12:31 -0500
- Thanks for the replies. I spent about 2 hours examining everything in the amp. I am convinced that the problem was an arc between the cabinet and the wiring connecting the HV choke. I have placed add
- /archives//html/Amps/2018-09/msg00010.html (7,549 bytes)
- 24. [Amps] Solid state amp high SWR distortion (score: 1)
- Author: John Simmons <jasimmons@pinewooddata.com>
- Date: Sat, 22 Sep 2018 23:12:50 -0500
- I'm converting from a tube amp to a solid state amp. I've seen references to increased distortion caused by a solid state amp when the SWR is high, not high enough to cause reduced (foldback) power.
- /archives//html/Amps/2018-09/msg00028.html (6,660 bytes)
- 25. Re: [Amps] Help with Henry Amp mechanical challenge (score: 1)
- Author: John Simmons <jasimmons@pinewooddata.com>
- Date: Fri, 19 Oct 2018 11:36:12 -0500
- I had a 2K-2 and had a similar problem removing the knobs. Turned out the screws were a splined allen, commonly known as Bristol. You can buy a set of Bristol wrenches from eBay. My set went when I s
- /archives//html/Amps/2018-10/msg00072.html (9,197 bytes)
- 26. [Amps] Ameritron 1306 PA balance fault (score: 1)
- Author: John Simmons <jasimmons@pinewooddata.com>
- Date: Mon, 22 Oct 2018 16:38:01 -0500
- I've got an in-warranty 1306 which shows high readings on the PAB position; it will fault out with the PA light lit when driven over 700 watts output on 17 meters and above, even with a low SWR less
- /archives//html/Amps/2018-10/msg00094.html (6,878 bytes)
- 27. Re: [Amps] AL80A PROBLEM (score: 1)
- Author: John Simmons <jasimmons@pinewooddata.com>
- Date: Tue, 20 Nov 2018 18:52:57 -0600
- And what happens to the SWR (or reflected power) when this happens? -John NI0K BY THE LAKE wrote: My AL80A began acting up a few weeks ago...nothing serious but baffling. On 160 and 80 mainly, when I
- /archives//html/Amps/2018-11/msg00070.html (8,297 bytes)
- 28. Re: [Amps] SB-220 Problem has me stumped, looking for some guidance on what to look at next (score: 1)
- Author: John Simmons <jasimmons@pinewooddata.com>
- Date: Tue, 15 Jan 2019 13:12:28 -0600
- Colin, While I'm certainly no tube amp guru, I have a couple thoughts. Have you tried running the amp without tubes and keying it? How about unplugging the amp and manually operating the relays and d
- /archives//html/Amps/2019-01/msg00073.html (11,693 bytes)
- 29. Re: [Amps] SS Amps are expensive...why? (score: 1)
- Author: John Simmons <jasimmons@pinewooddata.com>
- Date: Sun, 20 Jan 2019 16:26:38 -0600
- Lee, Simple answer: They are more complicated. Would you like a more technical answer? 73, -John NI0K Lee Buller wrote on 1/19/2019 10:46 AM: Why are solid state amps so expensive? Even the kits are
- /archives//html/Amps/2019-01/msg00088.html (8,253 bytes)
- 30. [Amps] Ameritron 1306 remote (score: 1)
- Author: John Simmons <jasimmons@pinewooddata.com>
- Date: Mon, 28 Jan 2019 09:50:56 -0600
- Anyone have the pinouts/functions for the RJ45 jacks on the back panel? I'm looking to remote control my amp. 73, -John NI0K _______________________________________________ Amps mailing list Amps@con
- /archives//html/Amps/2019-01/msg00154.html (6,381 bytes)
- 31. Re: [Amps] DIGITAL BARGRAPH DISPLAYS (score: 1)
- Author: John Simmons <jasimmons@pinewooddata.com>
- Date: Wed, 13 Feb 2019 15:25:55 -0600
- W6PQL has one, EB104 has one that also shows power and SWR. https://w6pql.com/ https://eb104.ru/karta-sayta/directory -J Steve Bookout wrote on 2/12/2019 6:54 PM: Hello all, Can anyone tell me who it
- /archives//html/Amps/2019-02/msg00040.html (8,400 bytes)
- 32. Re: [Amps] clipperton l low output on ssb (score: 1)
- Author: John Simmons <jasimmons@pinewooddata.com>
- Date: Tue, 19 Feb 2019 13:23:53 -0600
- Did you try it with the alc disconnected? Start with low drive from the exciter. 73, -John NI0K mike vititoe wrote on 2/19/2019 4:40 AM: Ok I bought a clipperton l used unknown condition. I installed
- /archives//html/Amps/2019-02/msg00053.html (7,778 bytes)
- 33. Re: [Amps] List traffic (score: 1)
- Author: John Simmons <jasimmons@pinewooddata.com>
- Date: Mon, 9 Sep 2019 19:56:06 -0500
- Wait ahwile..... list again! -de NI0K RAY FRIESS wrote on 9/9/2019 7:02 PM: I listed an amp for sale, but guess there was no interest Get Outlook for Android<https://aka.ms/ghei36> George Fremin III
- /archives//html/Amps/2019-09/msg00008.html (8,187 bytes)
- 34. Re: [Amps] shorted 3-500 (score: 1)
- Author: John Simmons <jasimmons@pinewooddata.com>
- Date: Sat, 12 Oct 2019 11:57:37 -0500
- Make a lamp out of it! -de John NI0K Paul Kraemer wrote on 10/12/2019 11:16 AM: Does anyone have a restoration technique to remove a grid cathode short on a 3-500Z? I have on just laying here--don't
- /archives//html/Amps/2019-10/msg00053.html (6,948 bytes)
- 35. Re: [Amps] K3 Drive Levels and the SPE 1.3K-FA (score: 1)
- Author: John Simmons <jasimmons@pinewooddata.com>
- Date: Sat, 16 Nov 2019 12:55:50 -0600
- Sounds like you have had some expensive learning experiences. The easiest solution is to put a 2-3 dB pad between the output of the K3 and the input of your amp. Look on eBay; you can find various co
- /archives//html/Amps/2019-11/msg00076.html (8,651 bytes)
- 36. Re: [Amps] Amp causing RFI (score: 1)
- Author: John Simmons <jasimmons@pinewooddata.com>
- Date: Tue, 4 Feb 2020 10:28:32 -0600
- I recommend you read the ARRL book 'Grounding and bonding'. I also highly recommend you connect to ground rods with exothermic welding. -de John NI0K Richard Solomon wrote on 2/4/2020 10:20 AM: I agr
- /archives//html/Amps/2020-02/msg00012.html (11,684 bytes)
- 37. Re: [Amps] Fuse holder surprise (score: 1)
- Author: John Simmons <jasimmons@pinewooddata.com>
- Date: Tue, 2 Jun 2020 22:21:11 -0500
- I built 25 350W VHF paging stations. They all used solid state amps and we finally settled on Duracomm DPS75 power supplies. The switching power supplies were much more reliable than analog supplies
- /archives//html/Amps/2020-06/msg00007.html (13,108 bytes)
- 38. Re: [Amps] Switching between two amplifiers (score: 1)
- Author: John Simmons <jasimmons@pinewooddata.com>
- Date: Sat, 3 Apr 2021 08:01:07 -0500
- Dick, Relays. https://www.mouser.com/ProductDetail/655-RT314012 easily handles full power. If you need more isolation, put two in series. -- 73, -de John NI0K in rural Debs, MN USA Dick NY1E wrote on
- /archives//html/Amps/2021-04/msg00001.html (8,113 bytes)
- 39. Re: [Amps] Alpha 87A Won't Transmit (score: 1)
- Author: John Simmons <jasimmons@pinewooddata.com>
- Date: Thu, 8 Apr 2021 09:02:52 -0500
- I love the crimp vs solder debate! People get as worked up over this as politics. The kingly Heliax connectors aren't solder... or crimp. They're compression. How does that fit in with the solder dev
- /archives//html/Amps/2021-04/msg00024.html (10,908 bytes)
- 40. Re: [Amps] KPA1500 Efficiency vs. RF-Kit B26 (score: 1)
- Author: John Simmons <jasimmons@pinewooddata.com>
- Date: Tue, 13 Jul 2021 15:58:40 -0500
- Dave, Back in the day I DID repair Motorola VHF amps that had that very problem! -- 73, -de John NI0K in rural Debs, MN USA https://www.qrz.com/db/NI0K Artek Manuals wrote on 7/13/2021 3:52 PM: Yep .
- /archives//html/Amps/2021-07/msg00053.html (9,125 bytes)
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