I run multiple RF decks from a common power supply and don't switch anything
except the "amp key" line, and that's only to avoid wasting power dissipated
in tubes that aren't doing any amplifying; I can't understand the need to do
so. -WB2WIK/6
-----Original Message-----
From: W2RU - Bud Hippisley [mailto:W2RU@frontiernet.net]
Sent: Thursday, October 06, 2005 12:34 PM
To: amps@contesting.com
Subject: [BULK] - [Amps] One PS, many amps
Dino Darling wrote:
>I believe I've read on here before where some owners have built MONO band
amps but powered them all from a single power supply. So, one power supply
deck and TWO RF decks. It has been suggested that I use vacuum relays to
switch between the two RF decks. I was hoping to have them both run in
standby at the same time. I obviously do not know enough and am therefore
here seeking guidance. I will only operate one amp at a time.
>
>
Years -- no, that's not quite right -- decades ago, W1MX used just such
a system. We had a bunch of HF monoband push-pull 304TL amplifiers tied
to a single HV supply. We had a single Collins exciter. When we
changed bands we switched only two functions -- the RG-58 from the
exciter, and primary power to the 304TL filament transformer in the
selected amplifier.
So obviously I don't know enough, either, because I'm not understanding
what the suggested vacuum relays are for.
Bud, W2RU
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|