If one uses an hf power amplifier for cw operation only is there any
good reason to operate it in AB1, AB2, or class B? Wouldn't class C
operation yield higher efficiency and actually make QSK operation
easier to implement?
Also, I'm curious if anyone out there is using the 3CX1200Z7/YU-181 in
a homebrew amplifier. With its grid terminal brought out to a large
circular flange on the tube base it would make an essentially zero
impedance grid-to-ground connection. The data sheet mentions use of the
SK-410 socket, but no chimney is mentioned. Is this series of tubes,the
3CX1200A7, 3CX1200D7, and 3CX1200Z7 a good choice for a homebrew amp
over something like an 8877?
This is my first posting to the reflector. Do I need to put on my
flak-jacket before reading replies?
Chip, NW0O
--
Chip Owens (owens@atd.ucar.edu)
--
FAQ on WWW: http://www.contesting.com/ampsfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|