Topband: A/B testing K6se etc.

Michael Tope W4EF at
Tue Jul 1 10:08:37 EDT 2003

This is a good point. I can imagine a scenario where there is
some BC 3rd harmonic coming in off air, and some being
generated in the front-end of the receiver under test. The two
components could either add or subract depending on the
phase relationship. A good high-pass filter placed in front
of the receiver under test would eliminate this uncertainty.

Mike, W4EF...............

> This is a very good point! Earl, how do you know the increase in third
> harmonic "copy" is not actually from rig defects??
> 73 Tom

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