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Nav antenna

 
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davidjoyce(at)doctors.org
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PostPosted: Sun Oct 22, 2017 9:02 am    Post subject: Nav antenna Reply with quote

Does anyone have a nav antenna (of VOR/Glide slope/Loc variety) conveniently to hand so that they could measure the resistance across the pin to sheath, or maybe is clever enough to know what it should be? Am pursuing a glitch and find that my nav antenna has a very low resistance unlike Com & Transistor antennae.
Regards, David Joyce, GXSDJ


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Burrilla



Joined: 25 Apr 2015
Posts: 182

PostPosted: Sun Oct 22, 2017 9:40 am    Post subject: Nav antenna Reply with quote

The are horizontal dipoles and should effectively be open circuit.

Alan

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On 22 Oct 2017, at 18:01, davidjoyce(at)doctors.org.uk (davidjoyce(at)doctors.org.uk) wrote:
Quote:

Does anyone have a nav antenna (of VOR/Glide slope/Loc variety) conveniently to hand so that they could measure the resistance across the pin to sheath, or maybe is clever enough to know what it should be? Am pursuing a glitch and find that my nav antenna has a very low resistance unlike Com & Transistor antennae.
Regards, David Joyce, GXSDJ




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paul.the.aviator(at)gmail
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PostPosted: Mon Oct 23, 2017 10:37 am    Post subject: Nav antenna Reply with quote

+1... To what Alan said

On Sun, Oct 22, 2017 at 12:39 PM, Alan Burrill <alanb(at)dpy01.co.uk (alanb(at)dpy01.co.uk)> wrote:
Quote:
The are horizontal dipoles and should effectively be open circuit.

Alan

Sent from my iPad

On 22 Oct 2017, at 18:01, davidjoyce(at)doctors.org.uk (davidjoyce(at)doctors.org.uk) wrote:
Quote:

Does anyone have a nav antenna (of VOR/Glide slope/Loc variety) conveniently to hand so that they could measure the resistance across the pin to sheath, or maybe is clever enough to know what it should be?  Am pursuing a glitch and find that my nav antenna has a very low resistance unlike Com & Transistor antennae.
Regards, David Joyce, GXSDJ
   





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