Yes it uses the Mini-Circuits VCO. The plans are available from the ARRL
download site. Here's the schematic.

http://www.geocities.com/hagtronics/r4_schematic.pdf


Pete KE9OA wrote:

Isn't that the one that uses the Mini-Circuits VCO? I believe that there was
an article about that unit a couple of years ago. Nice unit.

Pete

"HFguy" wrote in message

Pete,

Do you know about this (below) homebrew FS4 design?

http://www.geocities.com/hagtronics/r4.html