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Best location for WAAs antenna?

Printed From: Avidyne
Category: Avidyne General
Forum Name: IFD 5 Series & IFD 4 Series Touch Screen GPS/NAV/COM
Forum Description: Topics on Avidyne's IFD 5 Series and IFD 4 Series Touch Screen GPS/NAV/COM
URL: http://forums.avidyne.com/forum_posts.asp?TID=944
Printed Date: 02 May 2024 at 8:36am
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com


Topic: Best location for WAAs antenna?
Posted By: motoadve
Subject: Best location for WAAs antenna?
Date Posted: 23 Jan 2016 at 3:26pm
For a Cessna 182 what should be the best location?



Replies:
Posted By: ddgates
Date Posted: 23 Jan 2016 at 3:54pm
Top and away from antennas (Satellites are above the airplane).

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David Gates


Posted By: MysticCobra
Date Posted: 23 Jan 2016 at 4:15pm
Per the avionics installation manual's instructions.


Posted By: oskrypuch
Date Posted: 23 Jan 2016 at 5:33pm
Originally posted by motoadve motoadve wrote:

For a Cessna 182 what should be the best location?

If you have a fiberglass (or plastic) forward vert stab fairing, hide it right in the vertical stabilizer. It will reduce drag and the slow wind damage to the antenna and perhaps even protect the antenna a little better should you have an impact.

Doing so is typically within the permitted locations of the install directions.

* Orest



Posted By: DavidBunin
Date Posted: 25 Jan 2016 at 11:38am
If your airplane originally had an ADF antenna, there will be a hole on the top of the fuselage about a foot aft of the windshield.  I used this location for mine (Cessna 172).  It is offset to the right just enough to be clear of the cabin speaker.

You can also use the flat spot on the turtledeck aft of the rear window, opposite the ELT antenna.

David Bunin


Posted By: BobsV35B
Date Posted: 25 Jan 2016 at 9:04pm
For What It Is Worth! 

There is considerable detail given in the FAA Approved Installation Manual. Has to do with avoiding the center line, minimum spacing between antennas,  and avoiding shadowing of the antenna as much as practical  The FAA approved guidance has changed a lot in the last couple of years. The guidance when your Garmin 430 or 530 was installed has now changed as well. If you want the installation to be legal, follow the guidance in a current install manual. 

Incidentally, get too close to the windshield and you might get interference from static build up on the windshield.

Happy Skies,

Old Bob


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Old Bob, Ancient Aviator



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