[UK-CONTEST] O/T 4CX250

[Ken Eastty]

According to the ARRL handbook the Bias should be -50V which should give 
a standing current of around 100m/A for AB1, that's about what I see on 
my 4CX250's (HF, 4 & 2m)
What HT, screen voltage &  method of  screen regulation (if any) does 
the (old) Nag use?

73...

Ken

G3LVP


>
>
> ?
>
> Please dont laugh but I have a very ancient NAG 144 Linear (NOT!) Amp.
> Seems to work OK at the 200 watt plus level. So I assume valve is OK.
>
> Only odd thing is the BIAS contriol Reading in? the Jinglish handbook says set to 40 ma for 4CX150 or 350 (Mine has 4CX350)
> Full adjustment of POT only allows me to set for 50ma
> Does it matter,
>
> Have I a fault or is the info wrong.
> Might be easier if? book was in English !
>
>
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