Tom Rauch wrote:
>
>> The 4CX250B runs up to 400 volts on the screen.
>>
>> I have run 2500 volts on the anode.
>>
>> Runs very well with 2200Kv on plate, 350V on screen and grid between -60
>> to -80V.
>
>What is the zero signal idling current of the tube anode at those
>voltages?
Too low. The plate and screen voltages are OK, but the grid bias is too
negative for the recommended ZSAC of 100mA... which is *another* thing
that's important for linearity.
73 from Ian G3SEK Editor, 'The VHF/UHF DX Book'
'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.com/g3sek
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