[RTTY] Bright Idea #99

[Jerry Flanders]

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"