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Hi, John! Here's a rather different spot to mount your com
antennas: put one under each wing about 1/3 of the way out. That gives you lots
of separation between them for isolation, and has a much better counterpoise
(ground plane) length which enhances transmission, especially out to
the sides, plus most Tx-Rx is downward, not upward. If your GPS uses the very
small coax, I wouldn't have the distance from antenna to receiver very long due
to the higher losses in mini cable at the GPS frequency. As I've posted in the
past, if you want superior coax for all of your radios to minimize your
Tx-Rx losses for the best range and intelligibility over a long distance,
get Andrew FSJ 1-50.
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