Is there a nominal impedance or approximate impedance for a loop antenna?
For example, a dipole is considered 72-ohm, a bevarage 450-ohm. What is a
nominal loops Z?

I have a 4-1/2 foot diameter loop antenna with 12 turns paralled by a
capacitor for the antenna and one additional turn for the pickup coil. The
loop is for the 200 - 500kHz band. About how much is the impedance of such
an antenna? Thanks.

Al