Hi Alan,
I have lots of DDS and SI oscillators and want to experiment with!
The SR5 is a very basic switching mixer, with a simple, RC phase shift , with two comparators , a local xtal oscillator , low noise af amplifiers and a plug in antenna filtering.
I am mostly interested in the mixer and the audio amps. I can feed external fundamental vfo IQ feed, or, use an external 74AC74 to divide a straight vfo. Can be used as a simple monural rx, by feeding the audio amps to a TDA3820 stereo amplifier, etc etc
