You seem to be exceedingly knowledgeable about loop antennas. I have limited
space available for a 160 meters antenna. What advice do you have about a
loop antenna for 160 meters constructed out of 3/4" copper pipe with an
octagon shape, and a perimeter of 100 feet. The plane of the loop would be
vertical with the bottom of the loop about one foot high. The loop would be
fed at the bottom, and the remotely tuned series capacitor would be centered
in the top side of the loop. Does this project seem doable and does it make
sense?
John, N9JG

"Reg Edwards" wrote in message
...
The reason a multi-turn maggloop of the same diameter would be
disappointing is because of increased loss in the loop conductor.

The ability to collect or radiate signals is a function only of the
diameter, ie., the longest linear dimension. Alternatively stated, a
function of the area enclosed.

With a single turn loop, conductor loss is due simply to skin effect.

With a multi-turn loop and the same amount of copper, proximity effect
comes into play and loss resistance increases faster than radiation
resistance.

Also, with a transmitting magloop, for the same power input, the
voltage across the tuning capacitor increases proportional to the
number of turns. Ridiculously high voltages appear. Although, the
value of the capacitor in pF is very much smaller, the physical size
of the capacitor remains the same.
----
Reg.