In the last year or so, someone pointed out that the direction pots in
rotators are vulnerable to RF, since they have a wonderfully long antenna
in the control cable wires. It was suggested that ferrite beads on the
pot leads would prevent RF burning of the pot.
I notice that the new HyGain rotators advertise this feature, so it
can't hurt. Bypassing capacitors just don't have the same effect, in
my experience. Use a few #43 beads on each lead of the pot, and put
bypass caps at the pot side just for good measure. Can't hurt, might
help. Ferrite is somewhat conductive, so don't expect the beads to be
insulators.
73 de Dave, W6QHS
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