I finally bit the bullet in my BitX40 by removing L4 to try my own VFO.?
The original radio worked and I heard many CW and SSB stations, but I
have not heard any with my own VFO based on an AD9850.? I connect to the
VFO jack through a 0.1uf cap to pass a 5 MHz sine wave with VPP of 800
mv.? Does that sound right?? I'm not an RF engineer.? With f at 5 MHz I
assume I am tuned to 7 MHz and as the VFO f goes down the tuned signal
goes up.? Does that sound right too?? I need a reality check and a glass
of wine now.
Bob KF6ABC Mix?
