On Mar 31, 4:29*am, "William Sommerwerck"
wrote:
It would be interesting to stick a spectrum analyzer at various points in
the system -- starting at the unamplified antenna signal and see what's
going on.

uh, most HP spectrum analyzers had a 35+ dB noise figure, and you are
trying to 'see' the NF for RadioShack's amplifier, right, probably 2
to 3.5 dB NF?

So, a quick check that the cause of losing stations was due to
increasing the noise floor can be checked by verifying that all the
lost stations were weak stations to begin with.