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  • Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.

    Post 16 Update

    Post 17 Warning

Look at this photo...

As an ex Radio Engineer, the larger aerial looks similar to a UHF comms aerial, the smaller possibly IFF.

Navigiation aerials are usually fitted as pairs side by side each other.
 
Fnerg:

Remembering back when I used to own / work on planes, the smaller antenna is a "Transponder" antenna and the larger one looks like a "com" blade. Usually (at least when I dealt with them) a Nav antenna is in the tail of the plane..

Hope this helps..

Bill
 
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