Hal Rosser wrote:
If I recall, a full wave loop has an impedence of about 100 ohms, so if you
feed it with an electrical half-wave length of 75-ohm coax, you should have
an acceptable match, and a decent vswr.

Methinks you meant *quarter-wave* length of 75-ohm coax.
A half wavelength would merely repeat the feedpoint
impedance.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com