[Milsurplus] AN/PRC-47 frequency selection

[Michael Tauson]

I was sitting looking at the PRC-47's schematics one day trying to
find a way to drop the range to cover 160m.  (Okay, I have strange
ideas a lot.  That's one of my more lovable qualities.)  In doing so,
it seems to me that a lot of deck space is devoted to the process of
creating a signal that varies in 1 KCs steps and that if that
circuitry were replaced with something a bit more versatile, the only
control that would have to be kept would be the MCs one, and that only
to tune the various RF stages.

I happen to like DDS VFOs.  It's terrible, I know, but they are so
wonderfully cool and useful.  As I was staring at the schematics, it
occured to me that a DDS VFO could do everything that does in a few
square inches and at tremendous power savings.  (This lead to other
ideas but they're not germane to this train of thought.)  Now, I'm not
planning to swap one for the other but is that a fair assessment of
the progress made since the beast was made and now - that all the
"stuff" involved in frequency selection could so easily be replaced?
(Drive levels don't count.  They can be made to fit.)

Best regards,

Michael, WH7HG
-- 
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http://wh7hg.blogspot.com/
http://kludges-other-blog.blogspot.com
Hiki Nô!