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Europa-List: Transponder antenna

Subject: Europa-List: Transponder antenna
From: M@nsfield <nsfield@screaming.net>
Date: Mon, 18 Apr 2005 16:28:19

Planning what transponder antenna to fit and where... I want to avoid putting
it exposed under the belly.

My likely choice is a Microair T2000 and I would like not to have to spring
for a Bob Archer ($$$), but am told that the stub antenna must (should?)
be mounted externally.

I've read everything I can in the archives, and asked the UK supplier of
the Microair, and still get several different answers.

Jim Nelson wrote on 20 Jan 2004 "I mounted mine in the back on the pilots
side.  I mounted it vertical on three wooden rods which were reduxed to the
fuselage.  Ran the coax up the pilots side just under the door jamb and on
to the transponder.  Seems to work fine.  No interferance or noised noted."

This seems the logical answer, is this the stub (2.5"?) antenna & can you
elaborate on the 3 wooden rod mount, please Jim?

Anybody know why I shouldn't mount the stub antenna internally (glass is
transparent, isn't it?) behind the baggage bay, without being too far from
the xpdr unit and without degrading the signal significantly?

Any other helpful, cheap, suggestions, please?

Paul M
Mono XS 383
CM etc in, top on next


Book yourself something to look forward to in 2005.
Cheap flights - http://www.tiscali.co.uk/travel/flights/
Bargain holidays - http://www.tiscali.co.uk/travel/holidays/



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