At that voltage the layout and construction takes a lot of TLC, even on 160.
Id suggest 3200-3500V key down for long term reliability.
Carl
KM1H
----- Original Message -----
From: "Michael J Talkington" <n8fwd@hotmail.com>
To: <amps@contesting.com>
Sent: Tuesday, July 19, 2011 8:47 PM
Subject: [Amps] Supply question
>
> Hello,
> I am building a single band hf amp. I am using two 3-500Z tubes. The specs
> for the tubes say
> 4000 Volts dc max. I keep hearing people volting these tubes in standby
> above this voltage
> and when they transmit the voltage sags to 4000 vdc or a little below. Is
> this bad for the tube?
> If I figure correctly 2800 volts ac full wave bridge and after filter caps
> I should get 4032 volts dc
> 2800 X 1.44 am I correct? I will be bombarding you with questions cause I
> want to do this right.
> Thanks Mike N8FWD
>
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>
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