|[AMRadio] Biasing a Class C modulated final|
paul at paulbaldock.com
Wed Feb 18 12:19:30 EST 2015
At 09:03 AM 2/18/2015, Bernie Doran wrote:
>Hi Paul: I assume you are using the 813s in parallel, if so they will not
>like going above 20 meters.
I already have a grid driven linear amplifier with a pair in parallel
that easily runs 650W PEP on 10 meters. I drive this with my DX-60.
No parasitic chokes or neutralization necessary. 700V on the screen
and 2500V on the plates.
>resistance would be about 4000 Ohms and with about 30 MMF of output
>capacitance you are just about the limit for a reasonable tank Q on 20
An L-PI solves that problem.
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