REFLECTOR: Transponder Antennas

Kirk Aragon aragon_kirk at hotmail.com
Mon Feb 25 10:16:27 CST 2008



Craig,

I've temporarily installed the Advance Electronics com/nav antenna to fix an issue on my aircraft. The original builder chose to use "Wingco" winglets (Alan Shaw) which are made of carbon fibre. It appears that transmission where the antenna is bonded to the carbon fibre is next to impossible. This results in a highly directional antenna (i.e. I can transmit through the side of the winglet that is not bonded directly to the antenna). 

The new antenna has only been tested on the ground, but reception is already confirmed 5+ miles as compared to 100 yards previously. I'm looking forward to testing it in the air in about 2 weeks.

Kirk



From: cdwoolston at sbcglobal.net
To: reflector at tvbf.org
Date: Mon, 25 Feb 2008 05:05:57 -0800
Subject: REFLECTOR: Transponder Antennas
















Hey all-

 

  John and I have a homemade ¼ wave transponder antenna
mounted under the battery in the nose of the aircraft (completely) inside.  When
we first started flying we got occasional complaints here in SoCal about losing
our beacon.  Now it happens much more frequently and it appears to be when we
are low and in the “ground clutter”.  The frustrating part is the
GTX 330 shows a reply light even when ATC says they can’t see the code.  They
are getting a primary but no code.

 

Where have other located their antennas and what type?

 

Has anyone tried the Archer or Advance Electronics Antennas
I see in AS?

 

Craig

250hrs…XL-5FG Flying in Lancaster, CA

 






-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.tvbf.org/mailman/private/reflector/attachments/20080225/a1af131e/attachment.htm 


More information about the Reflector mailing list