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1. [Amps] 4pr1000 bias question (score: 1): Author: "Andy GD0TEP" <andy@gd0tep.com>; Date: Wed, 2 Apr 2008 21:23:11 +0100; Hello group, My 50mhz 4pr1000 amplifier is 99.9% finished, but I'm stuck on one last item. Does anyone know what the operating bias should be? And, what should the cut off bias voltage be? The amplif; /archives//html/Amps/2008-04/msg00049.html (7,459 bytes)
2. Re: [Amps] 4pr1000 bias question (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Wed, 2 Apr 2008 17:12:39 -0400; What plate and screen voltages are you using? And what class of operation? Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/; /archives//html/Amps/2008-04/msg00054.html (8,540 bytes)
3. Re: [Amps] 4pr1000 bias question (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Wed, 2 Apr 2008 18:11:52 -0700; My Handbook has data for the 4-1000 as follows: Telegraphy - 3,000v plate, 500v screen, -200 grid, 700 ma plate, 146 ma screen, 38 ma grid current AB2 - 4000 plate, 500v screen, -60 grid, 300/1200 ma; /archives//html/Amps/2008-04/msg00063.html (7,605 bytes)
4. Re: [Amps] 4pr1000 bias question (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Wed, 2 Apr 2008 22:06:23 -0400; Thats 1200W idle current for AB2! Eimac recommends around 500-600W. Are you looking at the PP pair AM modulator spec? Carl KM1H _______________________________________________ Amps mailing list Amps@; /archives//html/Amps/2008-04/msg00064.html (8,753 bytes)
5. Re: [Amps] 4pr1000 bias question (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Wed, 2 Apr 2008 20:10:51 -0700; "Thats 1200W idle current for AB2! Eimac recommends around 500-600W. Are you looking at the PP pair AM modulator spec?" I suppose the good news is that someone reads the stuff I write. I should waht; /archives//html/Amps/2008-04/msg00066.html (9,012 bytes)
6. Re: [Amps] 4pr1000 bias question (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Wed, 2 Apr 2008 23:30:17 -0400; I would have buzzed right buy it except having built many one and two holers for customers in the days good pulls were freebies 2 or 4 at a time from local 5KW BCB rigs. The 2 holer articles were in; /archives//html/Amps/2008-04/msg00067.html (9,538 bytes)

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