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The problem is not having the DME fry the transponder, or scramble the
signal. If properly installed, there is a muting line that goes between the
two radios that prevents this. The problem is that it's difficult to duplex
a transponder and DME into a single antenna. Even if done properly with a
duplexer/bp/br type setup, there will be about 3db or more loss, which will
make you non-radar much sooner than you should be when you are far away from
the ATC antenna. So for my sake (I'm an Air Traffic Controller) use 2
antennas. It would be cheaper anyway.. Thanks
Ron
I wouldn't do it, Rob - even if you didn't fry one or the other of the
units
(particularly the DME receiver circuits, as the Xponder transmits with
some
ooomph and they are sorta close, frequency-wise), the interaction would
probably scramble the encoded data in each, giving you erroneous results
on
your DME and the Xponder output would drive ATC bonkers!
LML website: http://www.olsusa.com/Users/Mkaye/maillist.html
Builders' Bookstore: http://www.buildersbooks.com/lancair
Please send your photos and drawings to marvkaye@olsusa.com.
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