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GPS antenna removal

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Argonaut36

Joined: 19 May 2019
Posts: 35

Posted: Tue Oct 22, 2019 6:58 pm Post subject: GPS antenna removal

I would like to remove the GPS antenna on my airplane.  The antenna is shown in the attached picture.

The antenna appears to be strongly bound to an aluminum support plate.  There are no screws between the bottom of the antenna and the plate that would not be visible in the picture. 

I removed the 4 screws located at the corners of the plate, hoping that the antenna/support plate assembly would come off the underneath support saddle as a unit, but they are not coming off.  The plate is also firmly bound to the saddle.

Any suggestions on how to remove this antenna?  My preference would be to disconnect the antenna from the plate, but also disconnecting the assembly antenna/plate from the saddle would be acceptable, as long as the saddle under the plate stays in place on the airplane and all the components are not damaged and can be re-used.

Thanks

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GPS Antenna Garmin GA 56 removal.pdf

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ceengland7(at)gmail.com
Guest

Posted: Tue Oct 22, 2019 7:48 pm Post subject: GPS antenna removal

On 10/22/2019 9:58 PM, Argonaut36 wrote:

 	  Quote: 	
		   



 I would like to remove the GPS antenna on my airplane.  The antenna is shown in the attached picture.

 The antenna appears to be strongly bound to an aluminum support plate.  There are no screws between the bottom of the antenna and the plate that would not be visible in the picture.

 I removed the 4 screws located at the corners of the plate, hoping that the antenna/support plate assembly would come off the underneath support saddle as a unit, but they are not coming off.  The plate is also firmly bound to the saddle.

 Any suggestions on how to remove this antenna?  My preference would be to disconnect the antenna from the plate, but also disconnecting the assembly antenna/plate from the saddle would be acceptable, as long as the saddle under the plate stays in place on the airplane and all the components are not damaged and can be re-used.

 Thanks

A jpg attachment would have been simpler to see. 
	




The pic makes it look like it's on fabric;  what's it attached to? If 

it's on the outer skin, there's likely sealant between the puck & the 

plate, and between the plate and the skin. My bet is that there are 

countersunk screws coming up through the bottom of the plate into the 

puck. I'd try a plastic blade gently around the edges of the plate-skin 

interface, to see if it'll peel up.



Charlie



-- 

This email has been checked for viruses by Avast antivirus software.

https://www.avast.com/antivirus

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Argonaut36

Joined: 19 May 2019
Posts: 35

Posted: Tue Oct 22, 2019 8:44 pm Post subject: Re: GPS antenna removal

The antenna is attached to the turtle deck that is made of aluminum plate and is covered with fabric, as you pointed out.  A saddle, that does not appear to be made of metal, is attached to the turtle deck and provides a flat surface for the installation of a metal plate. This plate is attached with 4 screws with 4 screws  and some sort of glue to the saddle.  The antenna seems to be attached just with glue to the plate, but it is possible  that there are also short screws (that don't go past the saddle inside the turtle) deck, connecting the antenna to the metal plate. As stated in my initial post, I would like to leave the saddle on the airplane, because I intend to install a different GPS antenna.

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GPS Antenna Garmin GA 56 removal.jpg

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Nader

Joined: 21 Oct 2019
Posts: 1

Posted: Wed Oct 23, 2019 2:43 am Post subject: Re: GPS antenna removal

 	  Argonaut36 wrote: 	
		  I would like to get my hands on these rangefinders for hunting and remove the GPS antenna on my airplane.  The antenna is shown in the attached picture.

The antenna appears to be strongly bound to an aluminum support plate.  There are no screws between the bottom of the antenna and the plate that would not be visible in the picture. 

I removed the 4 screws located at the corners of the plate, hoping that the antenna/support plate assembly would come off the underneath support saddle as a unit, but they are not coming off.  The plate is also firmly bound to the saddle.

Any suggestions on how to remove this antenna?  My preference would be to disconnect the antenna from the plate, but also disconnecting the assembly antenna/plate from the saddle would be acceptable, as long as the saddle under the plate stays in place on the airplane and all the components are not damaged and can be re-used.

Thanks 	




What GPS antenna will go with, Argonaut36?

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Last edited by Nader on Sat Jun 01, 2024 10:05 am; edited 2 times in total

Argonaut36

Joined: 19 May 2019
Posts: 35

Posted: Wed Oct 23, 2019 5:24 am Post subject: Re: GPS antenna removal

The new antenna will be a Garmin GA 35

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nuckolls.bob(at)aeroelect
Guest

Posted: Wed Oct 23, 2019 6:51 am Post subject: GPS antenna removal

At 08:24 AM 10/23/2019, you wrote:

  	  Quote: 	
		  --> AeroElectric-List message posted by: "Argonaut36" <fmlibrino(at)msn.com>



 The new antenna will be a Garmin GA 35 	


  Any chance the old antenna will work just fine

  with the new radio? Active GPS antennas tend

  to be rather generic and interchangeable

  across a broad spectrum of devices that

  utilize antennas on the far end of a piece

  of coax.



 

 

   Bob . . .

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Argonaut36

Joined: 19 May 2019
Posts: 35

Posted: Wed Oct 23, 2019 10:00 am Post subject: Re: GPS antenna removal

Thanks, Bob.

The new antenna is for the Garmin  GDL 82 (ADS-B).

I had asked Garmin if my existing antenna would work before purchasing the GDL-82 and they replied that the new GA 35 antenna was absolutely required.  Also, apart from the technical aspects, the GA 35 is the antenna listed in the GDL 82 STC with which I need to comply.

All this is very unfortunate.  This morning I found out that the new antenna is slightly larger than the old one and I will likely need to replace also the saddle that is glued to the airplane.

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