My 1933 ARRL Handbook does not have a schematic for a 5 to 5.5MHz VFO,
much less a solid state one.
Receivers that used 5MHz VFOs didn't start appearing until the mid '50s
(judging from my meager collection of handbooks -- I only have eight
spanning '33 to '76), with VFO SSB transmitters appearing about the same
time.
Someone who was actually alive at the time, or with a more extensive
collection, may be able to contribute more.
Scott wrote:
I'm pretty sure every issue of the ARRL Handbook ever published has had
a schematic for just such a critter...haven't got one for several years,
but they USED to have a design...
Scott
Dave Platt wrote:
In article . com,
k9jri wrote:
I am looking for a contruction artical or some other starting point for
a solid state 5 to 5.5 mHz. VFO to use with my PSK-20. Hopefully
somebody can point me to a contruction project, a kit or a source of a
VFO.
Buying a copy of "Experimental Methods in RF Design" (the successor
text to "Solid-State Design for the Radio Amateur") would be a very
good place to start reading. These guys have written down a vast
amount of very practical information and experience about how to do
this sort of thing well and reliably.
http://www.bright.net/~kanga/kanga/KK7B/uvfo.htm is a "universal" VFO
kit which you might be able to adapt for your needs.
Doug Demaw W1FB had another "universal VFO" design in his "QRP
Notebook" (a great book if you can find a copy). You can buy a kit
for it (board, semiconductors, air-variable cap, copy of the
construction article) for $30 from
http://www.danscloseoutsandspecialde...closeouts.html
I've bought stuff from Dan a couple of times and have always been
satisfied with what I've received.
--
Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
Posting from Google? See
http://cfaj.freeshell.org/google/
"Applied Control Theory for Embedded Systems" came out in April.
See details at
http://www.wescottdesign.com/actfes/actfes.html