Bill wrote:
Yes I have lol The station I am trying to recieve usually comes in pretty
good but sometimes at night it gets noisy. It is my understanding that an
external AM Loop antenna will recieve better than an internal loop that
comes with a small portable. I also have heard that a Loop picks up less
noise than an internal ferrite loop or random wire would. I have heard that
these external AM Loop antennas used to be quite common in the good ol'
days. But that they fell out of favor with most people to be replaced with
the internal ferrite loopstick antennas. If anyone has some detailed plans
for these older styled external AM Loop antennas I would really like to get
ahold of them. Thanks in Advance Bill

A friend of mine makes them. He uses the variable capacitor
out of old AM radios. He winds a number of turns of #30 wire
on a one foot diameter round piece of Styrofoam. He first
determined the number of turns needed by GDOing the coil
and cap in parallel to about 550 kc. Seems to me he used
20-30 turns. Just sitting it close to the radio and tuning
it to resonance solved his reception problem. It was resonant
and directional and its field was all the internal ferrite
loop antenna needed in his case. CCrane sells similar loops
under the trade name Select-A-Tenna.

http://www.ccrane.com/antennas/am-antennas/
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73, Cecil http://www.w5dxp.com