[Ron Ramirez]

You do own a scope, I assume?

Yes...I'm the one who has advocated for years that using a scope is better than using an output meter when aligning a radio.

Have I done as you suggested? Nope. I am at a loss to understand why the signal is clean to the output with a signal tracer, but not with speakers or headphones.

Maybe the next time I am feeling bored, I will get the 440 back out and feed a modulated 10.7 MHz signal to it, and do some tracing with the scope and see what happens. But for now, it can stay on the shelf. I'm actually working on another, unrelated project now.