fabricflyer
Well Known Member
Where are most of you placing your Com and Transponder Antennas on the 7A with a slider canopy? Just wondering if I need to wait on riveting at seat floor and baggage floor.
My two comm antenna's are in the wing tips, one per side.
Question for those of you who put the Transponder antenna on the front belly near the firewall..
On a tail dragger, what do you think about dead center between the exhaust? This way you could hide the mount under the center tunnel.
I have the 4 pipe exhaust and it will be several inches from it on each side with a good ground plane.
Thoughts?
hmm, a good question that I'm glad you asked...I mistakenly mounted mine in the center, not thinking about the exhaust. I was planning to move it outboard....but will be interested to see if anyone thinks it would be ok to leave it between the exhaust?
I mounted them like this and they work great!
I put my transponder antenna just aft of the firewall and inside of the fuel vent.Question for those of you who put the Transponder antenna on the front belly near the firewall..
On a tail dragger, what do you think about dead center between the exhaust? This way you could hide the mount under the center tunnel.
I have the 4 pipe exhaust and it will be several inches from it on each side with a good ground plane.
Thoughts?
Ron, the installation manual for the Garmin GTX 327 transponder calls for the antenna to be at least 36" away from the transponder to avoid interference. The distance from the stack (if it is roughly centred in the panel) to the front centre of the cabin will be significantly less than 36". I suspect that is one of the main reasons that it is not a favored position. Even opting for the front right or front left position will barely produce a 36" distance.
I am planning my layout for both comm and
Transponder ant. Locations.
Seems most RV'ers place the coms on the bottom
Any thoughts? I still need to figure this out.
I am planning my layout for both comm and
Transponder ant. Locations.
A while back I read a thread by Walt Arnow that suggested
that we as builders should strongly consider reading
FAA circular AC 43.13-2b. On page 25 paragraph (d)
It is stated that comm antenna's should be located on top
of the plane and that bent whips are not as effective as straight.
Seems most RV'ers place the coms on the bottom
Any thoughts? I still need to figure this out.
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It is my experience with even our corporate jets that at some airports on ground control or tower if you don't open the squelch on the comm that has the antenna on the bottom of the aircraft you might not hear them on the ground if your a long ways away from the tower, usually out of site of the tower,Such as DFW.
But in the air the bottom location has a definite advantage on picking up ATIS from airports even when we're 150 NM out from a small airport.
With my eperience that's why I chose the bottom location.
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