On Wed, 2012-01-04 at 10:06 -0800, Rick Karlquist wrote:
> Bill Cromwell wrote:
>
> > meters). One of the problems with high levels of electrical noise is
> > overloading of the front end and blocking of the receiver. Therefore
> > noise that is not actually on or very nearly on your operating frequency
> > jams you up. I am also investigating some of the loop antennas to use
>
> I don't see how noise overload of the receiver front end can
> be an issue. You can simply add front end attenuation such
> that the external noise just overcomes the receiver's internal
> noise. It would only be an issue if somehow there was much more
> noise just outside the 160 meter ham band than there was inside
> the 160 meter ham band. How would that ever happen?
Hi,
I don't think the front end xtal filters are a bulletproof fix, either.
They might contribute to a solution.
Come to my shack when the guy over in the body shop starts up his
welder. He isn't in the 160 meter band but his hash is strong enough to
tip over my superhets with rf amps and active mixers. I can just tell he
is welding with the Atlas. There is also a paging transmitter line of
sight and I sometimes get a strong dose of RF from that. The ricebox
won't tolerate that. The other radios don't seem to notice. There are
other assorted large doses of electronic crud that come and go here. I
used to live in the boonies, too. No problems there..just like you. I
used to ask the same. How could that be possible. It's possible. I
guarantee it. I wonder why they call it civilized.
73,
Bill KU8H
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UR RST IS ... ... ..9 QSB QSB - hw? BK
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