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Active VOR antenna

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berkut13(at)berkut13.com
Guest

Posted: Wed Sep 09, 2015 6:31 am Post subject: Active VOR antenna

VOR antenna project update:

  

 I want to extend a big THANK YOU to all that helped with this project and  tell you it was a complete success!

  

 We have been progressing through Phase I testing and the non-standard  VOL/ILS antenna design is working splendidly. It is being used with a Garmin 650  (internal splitter) and locks onto VOR signals from 100mi (at) 10,000’ and has no  problem at all with ILS capture either.  It was made from RG-58 coax and a  short scrap of 22-AWG wire for the counterpoise per the dimensions below.

  

 We are very pleased with it’s performance and can’t imagine that a standard  antenna would perform any better in this application.  Testing will  continue to determine if there are any blind or degraded spots or freqs.   But for now, mark it up as a successful alternate design!

  

 Thanks again!

 -James

 Berkut/Race 13

  

  

    

  From: Robert L. Nuckolls, III (nuckolls.bob(at)aeroelectric.com) 

 Sent: Thursday, June 04, 2015 5:26 PM

 To: aeroelectric-list(at)matronics.com (aeroelectric-list(at)matronics.com)  

 Subject: Re: Active VOR antenna

  



 

Jim, finished one of these and was disappointed in  performance.

The thing is so tiny that it's hard to  troubleshoot,

assembled a second just in case.



I think the best plan-b  for now is to install

a quasi-sleeve dipole . . . except that the  'sleeve'

is just a piece of wire. I forget how long you said

your antenna  conduit was, hopefully considerably

more than 26".



Make the antenna  from wire stiff enough to push

into the tube on the end of the coax.  Wouldn't

put a connector in the counterpoise. Just thread

it to the ship's  interior on installation and tape

it sort out of the way.

[img]cid:5C64B38EE92841F288FADEB2A490930B(at)DEFIANT2600[/img]  

I've got a couple other antenna projects on the bench

but some buys  waving credit cards have purchased some

keyboard/hammer-n-tongs time . . .  and I've got a couple

of pots boiling for B&C.  I'd like to pursue  the

active antenna experiment. It would be useful to field

test the idea  in close proximity to transponder and

vhf/comm transmitters!



In the  mean time, let's get your airplane flying. 



 

  Bob . . .

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eschlanser

Joined: 08 Apr 2010
Posts: 60

Posted: Thu Sep 24, 2015 10:08 am Post subject: Re: Active VOR antenna

Is the BNC connector connected directly to the Garmin 650? 

A picture of the antenna would be a big help, if possible.



Eric

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nuckolls.bob(at)aeroelect
Guest

Posted: Thu Sep 24, 2015 12:11 pm Post subject: Active VOR antenna

At 01:08 PM 9/24/2015, you wrote:

  	  Quote: 	
		  --> AeroElectric-List message posted by: "eschlanser" <eschlanser(at)yahoo.com>



 Is the BNC connector connected directly to the Garmin 650? 

 A picture of the antenna would be a big help, if possible.



 Eric

 	


   Eric, that project has been put on the back burner . . .

   too many pots on the stove.



 

 

   Bob . . .    [quote][b]

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