The transponder antenna should be mounted vertically as the signal is
vertically polarized, and preferably on the underside of the aircraft so the
aircraft structure doesn't interfere with the radiation pattern. Many pilots
prefer the antenna be located as far a practicable, within reason, away from
passengers to minimize any potential adverse effect from exposure to the
radiated energy - - may not be a factor, but why take chances. It's
important to use low-loss coax cable, follow manufacture's recommendations,
when remotely locating antenna..

Like Eric's, my transponder antenna is located on the belly just aft of the
gear doors, and the 175 watt Becker works well.

bumper

"Dale and Rosemary Thompson" wrote in
message ...

We've got our transponder antenna mounted in the ventilation air duct
in the nose. Works just fine. Plane is a Russia, with no carbon
fiber.
On 3 Dec 2003 14:26:39 GMT, wrote:

Can anyone (maybe a Dutch gliderpilot) offer advice
to fitting a 175watt Becker transponder to a Ventus?
This is new to us in the UK. Type of aerial and the
best location for it? Does a carbon fibre fuselage
give problems? I'm thinking of putting the aerial in
the wheel bay.



Rosemary

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