[R-390] R-390A NSA, noise

[Tisha Hayes]

Quote:
Even the simplest receivers have more than enough gain to turn band noise
into intolerable loudness. Band noise is not in the 1/10 microvolt range but
in the tens of microvolt range. Intermodulation from strong signals is the
problem... and on many solid state receivers the way you deal with that is
to put an attenuator in front of the front end in fact.
EndQuote:

To really appreciate an R-390A you need to live in the middle of nowhere to
get away from the worst noise sources. The way it is going, most hams are
living in such a high noise environment I doubt can even benefit from an
R-390A.

A good way to think about it, imagine trying to be an amateur astronomer
while living in the middle of a major city. Most folks there can barely see
the brightest stars and have no idea of what the Milky Way looks like.

-- 
Ms. Tisha Hayes/ AA4HA
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Factory certified interoceter repair center.
"Remember, use only genuine interoceter parts."