>
>Very quick response !!
>
>Peter Chadwick wrote:
>> If you have grid current, the tube is into AB2, and with grid
>> current and a bias supply that changes voltage because it is high impedance,
>> you will get very poor IMD.
>
>You are right if no ALC is used. My idea assumes 1-10 mA grid current
>(yes, it is little bit AB2), but ALC reduces driving power from the excitor,
>resulting total IMD is not so bad. Remember 6146 AB1 GC in KWM-2, same thing.
? not same thing. 6146Bs have a screen to shield the grid from the
anode.
>
- cheers, Kazuo
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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