On Mon, 12 Sep 2005 21:31:52 -0400, TRABEM wrote:


It has occurred to me that the antenna itself has a great deal of
selectivity, yet some loop users still report front end overload from
AM broadcast band and other megawatt LF rf sources.

Look for "antenna effect". Most likely the broadcast signals are
connected directly to the pickup wiring, which works then as an
ordinary "electric" antenna.

One way would be to make the pickup loop of coaxial cable. Bend the
end of the cable back to a convenient place on the cable to form a
loop, solder the end (both centre connector and shield) to the shield
at that point. At the opposite end of the loop cut the shield and now
you have a nice electrostatic shield around the centre conductor.

Paul OH3LWR