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References: [ +from:ajamas.rn@gmail.com: 24 ]

Total 24 documents matching your query.

21. Re: [Amps] Solid state amp, damage when powered while both input/output disconnected. (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Tue, 25 Mar 2025 08:21:57 -0400
Check device data sheets. Per data sheet, RF3809 power down is via pin 1 "bias control". 0 = power down 8V to operate. (with Vcc=8V) Data sheet indicates filtering for the Vref pin. If Chinese board
/archives//html/Amps/2025-03/msg00005.html (7,748 bytes)

22. [Amps] 1. Re: Paralleling plate xfmrs (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Mon, 27 Oct 2025 15:52:19 -0400
Perhaps worth adding a second rectifier bank to allow using one, the other, or both transformers. One will be plenty for SSB and CW. Use both for AM and RTTY. As an aside, with predistortion would it
/archives//html/Amps/2025-10/msg00023.html (6,748 bytes)

23. Re: [Amps] 12 KW CCS ON 160-15M....USING THE 3CX-6000A7..... PART 35 (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Sun, 2 Nov 2025 06:03:39 -0500
Nice job. Please correct me if I'm wrong. I'm an old fart but novice amp constructor. If amp is to be used strictly with a modern exciter that employs "pre-distortion", I can do away with a lot of fi
/archives//html/Amps/2025-11/msg00001.html (10,113 bytes)

24. [Amps] Subject: Re: 12 KW CCS ON 160-15M....USING THE 3CX-6000A7..... PART 35 (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Sat, 8 Nov 2025 07:39:04 -0500
Thanks for the gs35b 6m amp link! Regarding "pre-distortion". Adjusting an amplifier's input signal to compensate for compression and other nonlinearities let's us run an amp to almost the point of s
/archives//html/Amps/2025-11/msg00015.html (7,857 bytes)

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