REFLECTOR: Transponder Antennas

[Ron Brown]

I have my swizzle stick mounted under the battery, and contained within the nose.

Mine works GREAT with the Garmin GTX 320.  I have only had one issue - when taking straight out from an airport and the radar was apparently directly behind me and being blocked by the engine..  ATC said he didn't see me, I turned 10 degrees to the right and he picked it up fine.  

I'd take my plane and the transponder to the avionics shop and have it tested.  Should work with the location you have!  The swizzle sticks are cheap, you might just want to buy one of those.  Mine is mounted in a ground plane about 8" in diameter.
  ----- Original Message ----- 
  From: Timothy Quinlin 
  To: Velocity Aircraft Owners and Builders list 
  Sent: Monday, February 25, 2008 4:09 PM
  Subject: Re: REFLECTOR: Transponder Antennas


  In Socal airspace you're constantly getting hit with TCAS interrogations, hence the reply light.  So it could well be that the antenna or something else isn't right.
   
  Mike Quinlin




----------------------------------------------------------------------------

    ----- Original Message ----- 
        From: Craig and Denise Woolston 
        To: 'Velocity Aircraft Owners and Builders list' 
        Sent: Monday, February 25, 2008 8:05 AM
        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




------------------------------------------------------------------------


        _______________________________________________
        To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector

        Visit the gallery!  www.tvbf.org/gallery
        user:pw = tvbf:jamaicangoose
        Check new archives: www.tvbf.org/pipermail
        Check old archives: http://www.tvbf.org/archives/velocity/maillist.html



      _______________________________________________
      To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector

      Visit the gallery!  www.tvbf.org/gallery
      user:pw = tvbf:jamaicangoose
      Check new archives: www.tvbf.org/pipermail
      Check old archives: http://www.tvbf.org/archives/velocity/maillist.html





----------------------------------------------------------------------------
    Delicious ideas to please the pickiest eaters. Watch the video on AOL Living.


------------------------------------------------------------------------------


  _______________________________________________
  To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector

  Visit the gallery!  www.tvbf.org/gallery
  user:pw = tvbf:jamaicangoose
  Check new archives: www.tvbf.org/pipermail
  Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.tvbf.org/mailman/private/reflector/attachments/20080225/d197a8ac/attachment-0001.htm