REFLECTOR: Nav/Comm Coax in FB Wings

[Ron Brown]

I used an SWR to check mine.  There is a VOR and a COM antenna in each wing. 
Alan's wings had white and blue tape - so he said.  And my Alan Shaw wings 
had a sticker on the wing root where it faces the fuel tank/strake saying 
Wingco.

If you can't find a Ham radio guy with a SWR, you can connect a good Digital 
Voltmeter to the Coax, and move a big magnet over the winglet - the meter 
reading should change - try it on the voltage scale - as in millivolts.  The 
VOR antennas are mounted on the face of the spar deep inside the wing, so 
you might not be able to detect them with a magnet. Alan says he installed 
the antennas per the plans.

Ronnie


----- Original Message ----- 
From: "Dave Philipsen" <velocity at davebiz.com>
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Sent: Monday, August 28, 2006 3:21 PM
Subject: Re: REFLECTOR: Nav/Comm Coax in FB Wings


> Don't sweat it too much.  If you had to, you could put a SWR meter on
> each one and figure it out that way.  The SWR of the Nav antenna should
> bottom out at a lower frequency than the Comm antenna.  Another idea
> that might work (if your antennas are open-ended dipoles) would be to
> use one of those testers that electricians use while applying an AC
> voltage to the coax.
>
> bdtopp at comcast.net wrote:
>>    I am having difficulty determining which of the coax cables exiting
>> the wing roots is the Comm cable and which is the Nav cable.  It is
>> also unclear whether my wings were from Allan Shaw or from the
>> Velocity factory as they were delivered around the time Allan was
>> getting out of the fast build business.  I called Velocity and they
>> recommended that I look down the coax conduit hole as the Nav cable
>> terminates first.  Unfortunetly my wings are on the airplane and I
>> can't see down the coduit far enough.
>>    I noticed something on how the cables were marked and was wondering
>> if anybody on the reflector reconizes the markings.  The cables
>> exiting both wing roots are marked in the following manner.  There is
>> a longer cable with black duct tape wrapped around it, and, the
>> shorter cable has grey duct tape wrapped around it.  Does anybody know
>> if these markings mean something???  I am guessing since both wing
>> roots are marked in the same manner that it does.  Thanks...
>>
>> Bruce Topp
>> XL-FG
>>
>>
>> ------------------------------------------------------------------------
>>
>> Subject:
>> Re: REFLECTOR: Nose Oil Cooler cable connection
>> From:
>> HYTEC45 at aol.com
>> Date:
>> Mon, 28 Aug 2006 13:24:47 +0000
>> To:
>> reflector at tvbf.org
>>
>> To:
>> reflector at tvbf.org
>>
>>
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> -- 
> Dave Philipsen
> STDFG
> N171SP
>
>
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