[Amps] 8877 Plate Voltage

[Mike Tubby]

Don,

Agreed, I have a single 3-500Z on 6m (very good design from QST 1971) 
but it had a bit too much gain with 3600V on the tube, so I put 3 x 22R 
3W MOF resistor in parallel (giving about 7R at 9W) and put this in 
series with the cathode (after the tuned input) and it reduced the gain 
a couple of dB and produced a bit of NFB... works a treat.

Mike G8TIC


On 03/07/2012 15:44, donroden at hiwaay.net wrote:
> Properly designed, you will have both......
> Don W4DNR
>
>
>
>
>>> I think that if you put a resistor in *series* with the cathode circuit
>>> (rather than an attenuator) this would provide NFB...
>>>
>>> Mike G8TIC
>>
>> Which is what I meant, I used "pad" in a very generic way which seemed to
>> confuse someone.
>>
>> Carl
>> KM1H
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