Mailing List lml@lancaironline.net Message #56208
From: Bob B. <rbelshe@comcast.net>
Sender: <marv@lancaironline.net>
Subject: RE: [LML] Re: Transponder Antenna Locations
Date: Tue, 14 Sep 2010 21:41:59 -0400
To: <lml@lancaironline.net>
 Message Header

Undecoded Message
On my 235,  the transponder antenna is mounted in the left wing, outboard of the aileron bellcrank, far away from most metal and electronics.   A 14 inch aluminum disk attached to the underside of the top wing skin is the ground plane, with the transponder antenna mounted in the center. 
 
This arrangement has worked well for 15 years, first with a King KT76 and then with an Apollo SL70. 
 

Bob Belshe
Moraga, CA
Lancair 235/320  
http://home.comcast.net/~rbelshe/

 

From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of lalcorn@natca.net
Sent: Monday, September 13, 2010 1:02 PM
To: lml@lancaironline.net
Subject: [LML] Re: Transponder Antenna Locations

Thanks for the info Bill.  I think that will be my last resort.  Just trying to avoid drilling more holes.  I moved it around with my elt antenna ground plane and will try it with my rod and ball antenna mounted very low on the left aft baggage bulkhead.  Also, I might move the AAE to the opposite side down low.  I Think with the AAE mounted flat against the side fuselage it has a dead area front and back.  Maybe mounting it flat against the bulkhead would make that dead zone off the wing tips, which would be better because you are always moving forward, so the angle would always be changing from the radar.  Has anyone mounted the AAE antenna with the flat side aligned with the lateral axis of the plane? 

Luke Alcorn

Subscribe (FEED) Subscribe (DIGEST) Subscribe (INDEX) Unsubscribe Mail to Listmaster