[FoxHunt] 28 MHz RDF Loop.

[KD7JYK DM09]

I am looking at the 28 MHz RDF loop in the ARRL Handbook, 1994, page 38-12.

I have a few questions:

The design shows RG-11 for the loop.  Must it be RG-11 or can a rigid 75 Ohm
co-ax with greater structural integrity be used?

The lead-in description mentions 67 inches of RG-59/U (82 inches if the
cable has foamed dielectric).  What exactly determines this length?  A
difference of 15" seems to indicate more than just compensation for velocity
factor.

The description mentions mounting the 28 MHz RDF loop to the roof of a
vehicle with a suction cup.  Would there be problems using a magentic mount?

Kurt