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Old April 17th 18, 01:31 PM posted to rec.aviation.soaring
AS
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Default Transflex 02 Transponder Antenna

On Tuesday, April 17, 2018 at 2:39:09 AM UTC-4, bumper wrote:
Not what you are after, but less drag. Can be special ordered with a threaded hole instead of mounting studs, no additional. This allows mounting with brass threaded rod with filed notch for breakaway if on belly.

http://www.deltapopaviation.com/Ultr...r_Antenna.html

bumper



..... but less drag.
Careful here. If you install this type of antenna on the fuselage off the centerline in an area where the fuselage is necking down and you don't know the exact flow conditions in this spot, you may have it sitting slightly sideways.
Not exactly comparable to a glider but to show what I mean, take a look at his kind of antenna mounted to the belly of power planes. One side is typically black from the exhaust and oil coming from the engine due to the spiraling prop-wash airflow. The airflow is not parallel to the centerline at this spot and the paddle antenna will create a bit more drag.

Uli
'AS'