A few years ago QST ran an article on a class "E" amp (might have been
"D"). VERY efficient - better than 90%, I think (so cooling problems are
minimized). A "switcher" at the operating freq, as I recall. Should be a
fun experiment. You have to worry about harmonics of the operating freq.
Jerry W4UK
At 23:29 12/19/04, Jack West wrote:
Hi All,
I have been reading with interest the comments on using FSK. I run
FSK exclusively
on my old Kenwood TS-940 and I love it. I do not own an amplifier but I
would like to try
one. Myself being an active ham for the past 50 yrs, I have lots of
"junk" such that I
think I could build one. The comment that you can run a "Class C"
non-linear amplifier with
FSK really caught my eye. Sure! Why not? It would be like a amp for
CW. The efficiency would be up. There would be less heat to
dissapate. It would not have to be Grounded grid and use the ferite
isolated filament windings. Am I on track or what?
Comments welcomed...
de
Jack / W7LD / "Lucky dog"
_______________________________________________
RTTY mailing list
RTTY@contesting.com
http://lists.contesting.com/mailman/listinfo/rtty
|