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1. [Amps] ETO 91b help please. (score: 1): Author: kl7ra@blizzard.gcgo.nasa.gov (KL7RA); Date: Mon, 16 Dec 2002 09:39:32 -0900; Yo Robert Do this: Set tune and load to the presets mentioned in the book.=20 Run the power up a little and peak tune then load. Make sure the reflected power stays in the green.=20 You should not se; /archives//html/Amps/2002-12/msg00213.html (9,896 bytes)
2. [Amps] mystery amp (score: 1): Author: kl7ra@blizzard.gcgo.nasa.gov (KL7RA); Date: Mon, 4 Nov 2002 11:01:45 -0900; Yo John Sounds like the RF-103 It has several boards mounted on the inside of that door you opened that have white plastic covered relays. Bottom left front has several fuse holders and circuit break; /archives//html/Amps/2002-11/msg00021.html (8,213 bytes)
3. [Amps] Dow-Key Coaxial Relays` (score: 1): Author: kl7ra@blizzard.gcgo.nasa.gov (KL7RA); Date: Mon, 4 Nov 2002 12:53:29 -0900; Hi Phil The failure mode for the Dow-Key antenna relay in my RF-103 was caused by using a modern transceiver that burned the gold contacts when the 12 Ms close time was finally reached. I also repair; /archives//html/Amps/2002-11/msg00027.html (7,084 bytes)
4. [Amps] the mystery amp found a home (score: 1): Author: kl7ra@blizzard.gcgo.nasa.gov (KL7RA); Date: Fri, 8 Nov 2002 07:57:45 -0900; John I have one still in operation. They do work. The autotune feature using those mechanical presets was a bad idea as the "stop turning" alignment was a constant "fuss" factor. They did fix that w; /archives//html/Amps/2002-11/msg00131.html (7,758 bytes)
5. [Amps] Hot Switching (score: 1): Author: kl7ra@blizzard.gcgo.nasa.gov (KL7RA); Date: Thu, 14 Nov 2002 21:23:06 -0900; Hi Jim My old contest amps with dow-key antenna relays (now all retired from service) arced and sparked when using a DVK to call CQ. 73 Rich KL7RA; /archives//html/Amps/2002-11/msg00233.html (7,838 bytes)
6. [Amps] Hot Switching (score: 1): Author: kl7ra@blizzard.gcgo.nasa.gov (KL7RA); Date: Fri, 15 Nov 2002 03:53:17 -0900; Ian Interesting comments on hot switching, some remarks: I have not seen any hot-switching problems using commercial ham amps, but I have only operated Alpha, QRO and the AL-1500 with QSK installed.; /archives//html/Amps/2002-11/msg00242.html (15,567 bytes)
7. [Amps] Bird PEP board (score: 1): Author: kl7ra@blizzard.gcgo.nasa.gov (KL7RA); Date: Fri, 3 May 2002 07:37:08 -0800; --: Re: [Amps] Bird PEP board Hi Roger I have a Peak reading circuit for a Bird using an op amp with a battery. To solve the battery drain I used a DPDT switch and when I'm in "average" position the; /archives//html/Amps/2002-05/msg00015.html (7,458 bytes)
8. [Amps] OT - Is there a Kenwood reflector like this one? (score: 1): Author: kl7ra@blizzard.gcgo.nasa.gov (KL7RA); Date: Thu, 9 May 2002 12:18:53 -0800; Hi Gary Since you asked on this reflector, a few things to check: 1. screen voltage switch in back of radio is not on. 2. bad 12by7 3. 800 VDC is missing. Key ptt and select HV on meter. 4. drive kn; /archives//html/Amps/2002-05/msg00107.html (7,232 bytes)
9. [Amps] QRO Technologies amps? (score: 1): Author: kl7ra@blizzard.gcgo.nasa.gov (KL7RA); Date: Thu, 21 Mar 2002 17:05:03 -0900; Hi I have both the 3k and 2500. Use them for contesting in multi-multi. Run hard put away wet. The 2500 will run 1500 out on some bands with about 20 watts in and into a load is good for 2 grand or; /archives//html/Amps/2002-03/msg00488.html (7,479 bytes)
10. [Amps] HF1000 discontinued? (score: 1): Author: kl7ra@blizzard.gcgo.nasa.gov (KL7RA); Date: Mon, 25 Mar 2002 16:16:35 -0900; And Ray dropped the HF-3k with the 4cx1600b. Not sure why as it's a great amp. Also I see Alpha's new 4cx1600b amp was not for HF but VHF. Since having a QRO 3K now for three years of heavy duty con; /archives//html/Amps/2002-03/msg00583.html (6,926 bytes)
11. [AMPS] SB-220 Meter Movements (score: 1): Author: kl7ra@blizzard.gcgo.nasa.gov (kl7ra); Date: Thu, 14 Feb 2002 23:28:00 -0900; -snip Adding a switch to break the PTT path was a common trick for contesters. It was needed to allow an instant band change to work a multiplier barefoot then return to the run band at full power. M; /archives//html/Amps/2002-02/msg00147.html (7,872 bytes)
12. [AMPS] Linear AMP timing (score: 1): Author: kl7ra@blizzard.gcgo.nasa.gov (kl7ra); Date: Tue, 7 Aug 2001 10:36:51 -0800; I spent an afternoon measuring different relay latch and drop times using a test setup with 10KHz pulses and HP counter. The project was to modify the WX0B Stack Matcher to transmit using all the ant; /archives//html/Amps/2001-08/msg00083.html (9,795 bytes)
13. [AMPS] Switches (score: 1): Author: kl7ra@blizzard.gcgo.nasa.gov (kl7ra); Date: Thu, 12 Oct 2000 02:48:57 -0800; Another option is to use the "best" switch and pass the extra cost on to the consumer. I would pay the extra, but I know bean counters have their own problems. Mil spec amps are expensive. Maybe the; /archives//html/Amps/2000-10/msg00214.html (8,559 bytes)
14. [AMPS] QRO Amps (score: 1): Author: kl7ra@blizzard.gcgo.nasa.gov (kl7ra); Date: Tue, 12 Sep 2000 09:00:08 -0800; Hi Jim I have a multi-op contest station and use one for the twenty meter position. It has cranked a lot of Q's with no failures. Casual operating, I prefer it as it's quite and quick to tune by the; /archives//html/Amps/2000-09/msg00546.html (7,513 bytes)
15. [AMPS] QRO Amps (score: 1): Author: kl7ra@blizzard.gcgo.nasa.gov (kl7ra); Date: Tue, 12 Sep 2000 09:29:23 -0800; This comment is for the QRO HF-3kDX http://www.qrotec.com/ Sorry. Rich KL7RA meter -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQ; /archives//html/Amps/2000-09/msg00549.html (8,423 bytes)
16. [AMPS] AL-80B (score: 1): Author: kl7ra@blizzard.gcgo.nasa.gov (kl7ra); Date: Wed, 27 Sep 2000 09:21:27 -0800; Hi Joe I'm allowed to comment as a non-normal few. I also work with commercial amps and most have HV on/off switches. I was thinking if I have ever seen a stby/op switch and I think an old TWT s-band; /archives//html/Amps/2000-09/msg01108.html (7,868 bytes)

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