In message <961028013310_72770.552_HHS62-5@CompuServe.COM>, "Robert L.
Nuckolls, III" <72770.552@compuserve.com> writes
>What's the "welding" about? Surely nothing to do with your transponder
>antenna installation. The antenna you describe sounds like the small
>"shark-fin" shaped antenna which is electrically and operationally
>interchangeable with the 2.6" tall mono-pole antenna. Either antenna
>should be mounted either (1) on a the largest possible metalic area
>on the underside of a metal airplane or (2) mounted in the center
>of a 5.2" diameter disk of aluminum, brass or copper for composite
>aircraft and glassed into the belly structure of the fuselage.
Bob,
I'm sure you will by now know what the welding is about!
The antenna is actually one designed to be used without a ground plane -
page 329 of the Aircraft Spruce catalog.
Best regards
--
Rolph Muller
|