[TowerTalk] Cushcraft D40

[Chuck Counselman]

Michael Hatzakis, Jr wrote:
>...the instructions say, no foam coax for the balun, why is
>this?


I assume that the balun in question is a coil of coax.  If foam coax 
is curved too sharply, its center conductor will migrate, or flow 
very slowly, through the foam until it shorts to the braid.  This 
will happen rather quickly if the center conductor is warm -- as it 
will be if you're transmitting much power.

-Chuck, W1HIS