On 4/21/2014 10:05 AM, Joe Subich, W4TV wrote:
There are, of course, exceptions to that rule. When there is a
very strong signal in the passband that is causing the receiver
to reduce gain to the point that a weak signal is not copyable,
a CW filter (400 Hz) centered on the weak signal can often make
the difference between copy and no copy.
Yes. But the important thing is that "less is more" -- that is, the
phase shift occurs in the skirts and in the passband near the skirts --
so when reducing bandwidth, stay as wide as you can and still reduce the
strength of the QRM.
73, Jim K9YC
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