> For 9 ham bands, do you have to have 9 switch positions? 5 PA positions
> can cover 1.8 to 30 MHz without too much variation in operating Q;
> admittedly, you need something clever to switch input circuits, but cheap
> relays are a possibility, with some not-too-clever mechanics.
Six meters and WARC bands. The problems is with an inductor
right off the tube, the inductor needs to be switched on 6,10,12,15,
and 17. That keeps the Q reasonable without a vacuum cap.
73, Tom W8JI
w8ji@contesting.com
--
FAQ on WWW: http://www.contesting.com/FAQ/amps
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
|