>> Is the tube better in grounded grid configuration as I see
>>most 4-1000A schematics, or is it better in grid driven configuration?
>
>
>
>I'd say the choice is very dependent on how much drive power you have. As
>far as you can trust the ARRL handbook, it suggests about 10dB of gain in
>GG. If you want 1500 out, that could be a problem. In driven grid AB1, the
>power gain is theoretically infinite.
? Agreed, however, due to the problems involved in achieving large RF voltage
changes across the capacitive grid, the practical max. gain of a grid-driven
tetrode or pentode is seemingly in the 100 to 200 area.
> If you don't have at least 100 watts
>of drive on ten, I suspect you won't get an awful lot of output because you
>won't have enough drive.
>
>73
>
>Peter G3RZP
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
--
FAQ on WWW: http://www.contesting.com/ampfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|