[R-390] Mystery Antenna

[rbethman]

Andy,

I really don't know what the power output is.  I know that from 100 NM 
and 6500 ft Alt., I always got a SOLID signal.

The 'funny' part is that the polarization is HORIZONTAL.  Look at a 
Cessna or Piper - on the vertical stabilizer you'll see "V" shaped 
horizontal antenna - one half on each side of it.

That's the VOR antenna.  The aircraft ONLY receive VORs.

I can pick them up on the ground with my CEI Type 906A1 at home.  You'll 
never make ANY sense out of what you hear.  And - NO - my Bose wave 
radio does NOT get bothered.  I live about three miles from one at my 
local airport.  Manassas, VA - HEF, (FAA designation for the airport.).  
Dulles is IAD, and I'm not too far away as I'm under their approach 
lane(s).  Once again the CEI can pick it up, BUT neither my car system 
or Bose are bothered.

Bob - N0DGN
> Thanks to all the answers! It may not be a mystery to you, but it sure 
> was to me. Plus, I learned a lot more about aircraft navigation than I 
> ever knew.
>
> Anybody know what power those transmitters are? I wonder if the local 
> folks pick it up on their Bose Wave Radios. I know my car radio 
> reception goes wacky right about there. This airport is right in a 
> combination industrial/residential area.
>
> James A. (Andy) Moorer
> www.jamminpower.com