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1. [Amps] Relay contact burnisher (score: 1): Author: nx7u@arrl.net (Scott Townley); Date: Wed, 06 Nov 2002 14:47:51 -0700; Jenson Tools has a small burnishing tool with a nice flat blade that I use on all my relay contacts; works like a dream. It's like $15 or something like that.; /archives//html/Amps/2002-11/msg00074.html (8,070 bytes)
2. [AMPS] RF Electronics shut-down and more info (score: 1): Author: nx7u@arrl.net (Scott Townley); Date: Thu, 04 Oct 2001 07:42:39 -0700; ARRL web story http://www.arrl.org/news/stories/2001/10/02/3/?nc=1 The cited rules: 47CFR97.315 "Certification of External RF Power Amplifiers" http://frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TIT; /archives//html/Amps/2001-10/msg00066.html (8,417 bytes)
3. [AMPS] B+ "Choke in a Can" question (score: 1): Author: nx7u@arrl.net (Scott Townley); Date: Fri, 10 Nov 2000 14:14:49 +0000; Looking at the B&W BBC-5K RF choke (for B+), it's in a can. Two feedthru insulators come out of the can to get to either side of the choke. Seems that this would be an excellent method to control the; /archives//html/Amps/2000-11/msg00092.html (7,483 bytes)
4. [AMPS] Interfacing SG-500 to FT-100... (score: 1): Author: nx7u@arrl.net (Scott Townley); Date: Sat, 26 Aug 2000 19:36:39 -0700; This isn't really an AMPS question, but there's an amp involved... I have an SG-500 that I'd like to fully interface to my FT-100 (fully means using ALC, band select, sequenced PTT--the whole works).; /archives//html/Amps/2000-08/msg00411.html (7,578 bytes)
5. [AMPS] Slow coaxial relays (score: 1): Author: nx7u@arrl.net (Scott Townley); Date: Sun, 28 May 2000 16:41:15 -0700; I recently acquired some coaxial relays very similar to the DK-60 type (but there are no markings on them). They have 12VDC coils. I was surprised to find that although these relays "make" quickly (n; /archives//html/Amps/2000-05/msg00326.html (7,714 bytes)
6. [AMPS] test (score: 1): Author: nx7u@arrl.net (Scott Townley); Date: Mon, 07 Feb 2000 23:57:39 -0700; -- Scott Townley nx7u@arrl.net Gilbert, AZ DM43 http://www.primenet.com/~nx7u -- Collector of: Stoddart Aircraft EMI/RFI receivers and accessories Big Parts for that Big Linear Amp (someday I'll buil; /archives//html/Amps/2000-02/msg00108.html (7,128 bytes)
7. [AMPS] Some Q's Re: Mobile HF Amps (score: 1): Author: nx7u@arrl.net (Scott Townley); Date: Tue, 08 Feb 2000 00:03:49 -0700; To: <amps@contesting.com> around. Limiting the field to 1.8-30MHz, I know of the following: of this list? Anyone I forgot? because of the form factor and the automatic band switching (several manufac; /archives//html/Amps/2000-02/msg00109.html (8,831 bytes)
8. [AMPS] Italians and power? (score: 1): Author: nx7u@arrl.net (Scott Townley); Date: Sun, 31 Oct 1999 15:02:27 +0000; And I've always wondered kinda the same thing here. I've been running HF mobile for the past few weeks, and I've been getting thru "OK", even busting a few medium-sized pileups, with 100W and a Hustl; /archives//html/Amps/1999-10/msg00703.html (9,039 bytes)
9. [AMPS] "Klitzing Elex" 70cm brick? (score: 1): Author: nx7u@arrl.net (Scott Townley); Date: Tue, 10 Aug 1999 07:29:31 -0700; I have a Klitzing Electronics 100W 70cm brick; uses a pair of MRF646 driven by "SD1088". As the MRF646 are in my 1991 Moto RF Devices book I'm assuming the amp is late-80s to early-90s vintage. Can a; /archives//html/Amps/1999-08/msg00183.html (7,061 bytes)
10. [AMPS] 50-500 MHz in solid-state? (score: 1): Author: nx7u@arrl.net (Scott Townley); Date: Sat, 12 Jun 1999 22:47:14; OK. 3.5-30MHz solid state amps with G=10dB (10W in/100W out) are pretty pedestrian nowadays. Cover just about one decade in frequency, Gain-bandwidth product=27MHz*10=270MHz. Well, 50-500 MHz is also; /archives//html/Amps/1999-06/msg00409.html (8,118 bytes)
11. Re: [Amps] Need info on adding WARC bands to an old HB 4-1000A amp (score: 1): Author: Scott Townley <nx7u@arrl.net>; Date: Sat, 04 Dec 2004 14:44:54 -0700; John (and whomever else is interested). 1. As noted previously, dip meters are just wonderful things. 2. I am retooling a 3-500z amp. The HV stack is a B&W800, and down the of the B&W800 to ground, s; /archives//html/Amps/2004-12/msg00077.html (9,703 bytes)
12. [Amps] HF Bias-T...sorta off topic (score: 1): Author: Scott Townley <nx7u@arrl.net>; Date: Wed, 04 May 2005 18:50:40 -0700; I would like to make a bias-t (aka dc injector) for HF...3-30MHz. It needs to handle c.2 amps and preferably around 500W RF. The application is remote-tuning a "screwdriver" antenna. Seems silly to r; /archives//html/Amps/2005-05/msg00071.html (6,734 bytes)
13. [Amps] SGC mini-lini...am I the only one who doesn't get it? (score: 1): Author: Scott Townley <nx7u@arrl.net>; Date: Wed, 25 May 2005 16:20:35 -0700; I just don't get it. 1. It's not a mobile product...maybe that's just me. I have the SG-500 and so I immediately compare to that. 2. It "seems" inexpensive but it sure adds up...$600 for the "base" u; /archives//html/Amps/2005-05/msg00298.html (7,226 bytes)
14. Re: [Amps] shielding (score: 1): Author: Scott Townley <nx7u@arrl.net>; Date: Mon, 08 Aug 2005 16:26:31 -0700; Finally, the solution to my mobile ignition & fuel pump noise... _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amp; /archives//html/Amps/2005-08/msg00309.html (8,006 bytes)
15. [Amps] air variable min C? (score: 1): Author: Scott Townley <nx7u@arrl.net>; Date: Sun, 02 Oct 2005 09:02:20 -0700; Regarding air-variable capacitors: Most folks refer to air-variable caps by their max C value, and sometimes include the plate gap and/or rated working voltage (particularly when selling them!) But m; /archives//html/Amps/2005-10/msg00040.html (8,079 bytes)
16. Re: [Amps] Low power output from 4-400A linear (score: 1): Author: Scott Townley <nx7u@arrl.net>; Date: Tue, 11 Oct 2005 17:03:22 -0700; Numbers according to Eimac in parentheses: Measured power out: 855 watts (1200) Power input: 1216 Watts (1980) Ep:3200 Volts (3000) Ip: 380 Ma.( at max output) (660) Ig: 250 Ma. (200) Eg: Bias 00 (0); /archives//html/Amps/2005-10/msg00292.html (9,530 bytes)
17. Re: [Amps] Low power output from 4-400A linear (score: 1): Author: Scott Townley <nx7u@arrl.net>; Date: Tue, 11 Oct 2005 18:40:49 -0700; another thought...is there a tuned input/cathode circuit, or is it direct-feed? _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailm; /archives//html/Amps/2005-10/msg00296.html (8,730 bytes)
18. [Amps] corded dial drive help (score: 1): Author: Scott Townley <nx7u@arrl.net>; Date: Sun, 22 Jan 2006 21:59:56 -0700; My project amp (specifically BTI LK-2000) has one of those ganged-corded dial drive mechanisms to turn the input and output band switches together. Is there any reference mat'l that someone can point; /archives//html/Amps/2006-01/msg00525.html (6,455 bytes)
19. Re: [Amps] measuring rf colis (score: 1): Author: Scott Townley <nx7u@arrl.net>; Date: Tue, 24 Jan 2006 18:31:00 -0700; Probably at low-frequency...like 1kHz or so. Remember the RF devices will measure a coil's *apparent* inductance, meaning inductance together with distributed capacitance plus any stray capacitance t; /archives//html/Amps/2006-01/msg00595.html (8,190 bytes)
20. [Amps] power supply for larger solid-state amps (score: 1): Author: Scott Townley <nx7u@arrl.net>; Date: Fri, 27 Jan 2006 17:53:40 -0700; I would like to use my SGC-500 in the shack from time to time so my attention has turned to a suitable power supply. This amp runs on 13.8VDC and about 70-80A. On the commercial side I suppose I coul; /archives//html/Amps/2006-01/msg00631.html (7,704 bytes)

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