Al
the best place might be up on the roof, upside down. Nothing much to
shadow it up there? Your ground plane sounds OK but a halfwave dipole is
better, Bob Archer makes a heat one. Gives a flatter distribution pattern
Graham
AlStills wrote:
>
>Hi all,
>I've been having a little problem with ATC reading my transponder all the
>time. I suspect a bit of shadowing.. I have the 2 1/2"-3" transponder
>antenna mounted
>upside down on a shelf on the rear corner of the baggage bay. I have a 6"
>steel ground plane mounted to the antenna. What size ground plane have
>others used
>
>Al Stills
>N625AZ
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