Kendal Goodson wrote:

I've located the problem. I thought it would be something pretty
subtle and it turned out to be just that. One of the pins on the
SA612 did not go into the socket properly. It bent under and was just
almost touching the socket contact. I guess it was capacitively
coupling to the VFO output instead of getting a good feed. I've
straightened it and I'm up and running.

Thanks for all of the suggestions.

72,
Kenn
KA5KXW

Ah, good detective work. I would have never seen that coming!

-Bill