>
>Well, it has been tried, with no success. Could be that then the tubes were
>used and had little emission left as they were pulls from FM transmitters.
>A new tube might work. But 170W i a 'lotta' drive for no reason..
With a grid bias of c. 120v in Class AB and a 50-ohm termination
resistor, 170w is what it takes to make a bit of grid current. . The
170w goes mostly into the termination.
later, Peter
>
>
>
>At 14:34 2000-03-26 -0700, you wrote:
>>>At 10:53 2000-03-26 -0700, Rich wrote:
>>>>
>>>>>
>>>>>Today, perhaps there are just a few reasons to use the G2DAF circuit. One
>>>>>would be to experiment and the other would be to use surplus tetrodes
>which
>>>>>might not be usable in grounded grid.
>>>>
>>>>Please name one. thanks
>>>>
>>>
>>>The QBL 5/3500 does not work in GG, believe me.
>>
>>According to the data sheet, the QBL 5/3500... works well in AB
>>grid-driven service. It should do about 3 out. With a 50-ohm grid
>>termination, 170w will drive one.
>>
>>cheers, Peter
>>
>>- Rich..., 805.386.3734, www.vcnet.com/measures.
>>end
>>
>
>--
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>
>
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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