REFLECTOR: Transponder antenna

[Jack Sheehan]

Manny,
Same answer as Al. Mine is mounted under the oi 
cooler in the nose with about a 7 inch square ground plane.
Jack
N55XL
At 06:37 PM 5/19/2007, you wrote:
>I mounted my transponder antenna in the strake 
>at the wing-strake joint.  I have had chronic 
>problems with reception, particularly when the 
>ground station is on the side away from the 
>antenna position. In this case, the ground 
>station can usually pick me up, at least for a 
>while, if I rock my wings.  I have a King transponder/antenna.
>What's the latest thinking on mounting the 
>transponder antenna for maximum range?
>Manny Lewis
>
>Manny;
>
>A contributing factor is likely the long antenna 
>lead from the unit.  The transponder signal 
>likes a short lead.  Also, being on one side 
>makes it subject to shadowing.  I mounted mine 
>between the battery holder and the canard 
>bulkhead, below the retract pump. It puts it low 
>in the plane, and close to the panel. Tight fit, 
>works fine.  First photo is antenna and ¼ wave 
>ground plain, second photo is antenna installed.
>
>Hope this helps,
>
>Al
>
>
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