[Amps] 4pr1000 bias question

[jeremy-ca]

Thats 1200W idle current for AB2!

Eimac recommends around 500-600W. Are you looking at the PP pair AM 
modulator spec?

Carl
KM1H


----- Original Message ----- 
From: "k7fm" <k7fm at teleport.com>
To: <andy at gd0tep.com>; "'amps'" <amps at contesting.com>
Sent: Wednesday, April 02, 2008 9:11 PM
Subject: Re: [Amps] 4pr1000 bias question


> 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 plate, 0-95 ma 
> screen,
> 11 watts driving power, 3 KW out
>
> That may be a bit more than the G license allows.  I have some 4PR1000 
> tubes
> and interchange them with my 4-1000 tubes and assume the current is the
> same.
>
> 73,  Colin  K7FM
>
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