Raj,
Thanks for that. I have already started on the analogue vfo. I have lots of 1960's components! Should be less of a compromise.
The Raduino might be used later at 19MHz to produce usb for data/wspr. Could one make a dual 40/30 meter usb transceiver by adding 22MHz to the Raduino? Would a 10MHz bandpass filter reject the 12 MHz IF sufficiently?
73 Brian.
