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221. [Amps] strip line design (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Fri, 23 May 2014 02:58:06 +0000 (UTC); Hello builders, A quick question about strip line design. Does it matter or make much difference where the B+ is attached to the stripline? I've seen a couple designs where it is connected close to t; /archives//html/Amps/2014-05/msg00121.html (7,228 bytes)
222. Re: [Amps] Sunset of old technologies (off topic) (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Fri, 21 Apr 2017 17:52:52 -0400 (EDT); Hi Cathy, I don't really agree that the disposable income has decreased. I would in fact say the average US family is spending far more than they have in the past, simply because they have the dispos; /archives//html/Amps/2017-04/msg00174.html (9,566 bytes)
223. Re: [Amps] Sunset of old technologies (off topic) (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Fri, 21 Apr 2017 23:09:55 -0400 (EDT); Hi David, OK, fair enough, I'm not sure about "vastly", high end HVAC units were in the 80% efficiency range in 1980, compared to 98% efficiency today. Insulation may be vastly better, it really depe; /archives//html/Amps/2017-04/msg00183.html (8,431 bytes)
224. [Amps] Entry level license (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Fri, 28 Apr 2017 14:51:18 -0400 (EDT); Below, reference 97.1(a) As far as I know, this, or some form of it has always been the main purpose. I remember going into US Navy radioman school as an amateur operator. We learned the code, as wel; /archives//html/Amps/2017-04/msg00395.html (11,744 bytes)
225. Re: [Amps] Entry level license (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Fri, 28 Apr 2017 17:14:35 -0400 (EDT); Hi Mike, No offense taken. IMHO, I think we should just be thankful there is enough room in the amateur service and ranks to accommodate what each of us enjoy, building amps, providing emergency comm; /archives//html/Amps/2017-04/msg00397.html (16,866 bytes)
226. Re: [Amps] Antenna Works (Jim W7RY) (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Wed, 6 Sep 2017 21:18:11 -0400 (EDT); Rich may be RICHARD J STARETS, KA6NBC _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2017-09/msg00036.html (10,514 bytes)
227. Re: [Amps] Amps Digest, Vol 178, Issue 1 (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Mon, 2 Oct 2017 12:43:10 -0400 (EDT); Hi Mike, Just one or two questions for you... "...How long should I put up with someone punching me in the nose before I punch back?? I just got sick of it so I decided to try to put it in terms that; /archives//html/Amps/2017-10/msg00002.html (7,594 bytes)
228. Re: [Amps] Subject: 3CX1500D3 Triodes (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Tue, 4 Dec 2018 09:34:02 -0500 (EST); They would be great in a Class C (CW, FM, AM) homebrew amp though. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/a; /archives//html/Amps/2018-12/msg00020.html (7,680 bytes)
229. [Amps] NCL-2000 retube (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Fri, 12 Aug 2022 12:14:53 -0400 (EDT); I have an NCL-2000 that both 8122's are bad. I've also got a pair of 4cx1500b and sockets. On paper, it looks like a single 4cx1500b would be a heater transformer. Has anyone tried this? comments, th; /archives//html/Amps/2022-08/msg00010.html (6,356 bytes)
230. Re: [Amps] NCL-2000 retube (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Thu, 18 Aug 2022 18:48:48 -0400 (EDT); _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2022-08/msg00023.html (6,791 bytes)
231. Re: [Amps] 10 kw CCS on 6M. Part-3 (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Sat, 10 Sep 2022 15:35:17 -0400 (EDT); _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2022-09/msg00010.html (7,482 bytes)
232. [Amps] Harris RF-110A AM-3924 (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Sun, 18 Sep 2022 10:46:56 -0400 (EDT); _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2022-09/msg00031.html (6,314 bytes)
233. [Amps] Harris RF-110A AM-3924 (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Mon, 19 Sep 2022 11:17:07 -0400 (EDT); Hello group. I'm getting ready to bring a 40+ year old RF-110A online. I kept the low voltage portion intact for the filiment, bias, and the 400 Hz chopper to the lower. I've gutted the old 3phase po; /archives//html/Amps/2022-09/msg00033.html (8,056 bytes)
234. Re: [Amps] Harris RF-110A AM-3924 (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Tue, 20 Sep 2022 10:22:10 -0400 (EDT); Thanks Victor, For some reason, I was thinking I read the opposite. Would it then just be better to apply both screen and full or reduced plate voltage? Paul. ________________________________________; /archives//html/Amps/2022-09/msg00035.html (8,070 bytes)
235. [Amps] Three phase (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Thu, 29 Dec 2022 08:22:41 -0500 (EST); _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2022-12/msg00153.html (6,404 bytes)
236. [Amps] three phase (try again) (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Thu, 29 Dec 2022 13:01:46 -0500 (EST); Hello group, I've been exploring ways to get an AN/URT-23D running. It requires about 6KW, 60Hz 208V 3-phase power. I know I can use a rotary phase converter to create three phase from single phase.; /archives//html/Amps/2022-12/msg00157.html (7,204 bytes)
237. Re: [Amps] WTB G3SEK/GM3SEK Triode Control Board (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Sun, 23 Apr 2023 19:34:04 -0400 (EDT); _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2023-04/msg00043.html (6,693 bytes)
238. [Amps] step start (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Sun, 1 Oct 2023 14:19:59 -0400 (EDT); Hello all. I'm building a 4cx1500b amplifier. This is the first tetrode high power amplifier I've tried to do. I'm using about 300V on the screen and 2500 on the plate. For my power supply I'm using; /archives//html/Amps/2023-10/msg00000.html (6,557 bytes)
239. Re: [Amps] step start (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Mon, 2 Oct 2023 08:14:05 -0400 (EDT); I was thinking the step start could be put onto both the screen and the plate voltage transformer. Since the screen dumps into a 1 Henry, it does take some time for that to charge so they both should; /archives//html/Amps/2023-10/msg00004.html (8,608 bytes)
240. Re: [Amps] step start (score: 1): Author: Paul Decker <kg7hf@comcast.net>; Date: Mon, 2 Oct 2023 15:54:39 -0400 (EDT); Hi Jim, I was actually using the Harris RF-124 power supply as a design guide, but also trying to use parts that I have on hand at the same time. I'm using a Hammond 193S DC Filter Choke, inductance; /archives//html/Amps/2023-10/msg00010.html (8,549 bytes)

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