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		rparigoris
 
 
  Joined: 24 Nov 2009 Posts: 808
 
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				 Posted: Mon Feb 08, 2010 11:02 am    Post subject: GPS antenna mounted to instrument module | 
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				Hi group. We are working on instrument module at moment.We have a Garmin 296 and was wondering if anyone has mounted the antenna to the underside of the top of the instrument module just about above the gear lever cutout?Bout how far aft of firewall?Any input would be appreciared.Ron Parigoris   [quote][b]
 
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  Last edited by rparigoris on Sun Feb 14, 2010 6:40 am; edited 1 time in total | 
			 
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		Ivor Phillips
 
 
  Joined: 16 Jan 2006 Posts: 253 Location: London UK
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				 Posted: Mon Feb 08, 2010 11:50 am    Post subject: GPS antenna mounted to instrument module | 
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				Hi Ron
 I have located my two antenna in the roof space between the doors, Garmin 295  
 and Skyforce 3c, Both work well directly through the roof, No problems with signal strength or Blanking of signal,
 Ivor
 : 
  	  | Quote: | 	 		   
  
  Hi group. 
  We are working on instrument module at moment.
  We have a Garmin 295 and was wondering if anyone has mounted the antenna
  to the underside of the top of the instrument module just about above the
  gear lever cutout?
  Bout how far aft of firewall?
  Any input would
  be appreciared.
  Ron Parigoris
 
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		mikenjulie.parkin(at)btin Guest
 
 
 
 
 
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				 Posted: Mon Feb 08, 2010 12:30 pm    Post subject: GPS antenna mounted to instrument module | 
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				I have a skymap 3c with the antenna mounted underneath the top of the instrument panel as you describe.  It has worked flawlessly for 8 years.
 
 Regards,
 
 Mike  (Finally the weight of the paper has reached the AUW of the aircraft.  G-JULZ is at last 'Hot to Trot', just need the weather to agree now'.
  	  | Quote: | 	 		   Hi group. 
  We are working on instrument module at moment.
  We have a Garmin 295 and was wondering if anyone has mounted the antenna
  to the underside of the top of the instrument module just about above the
  gear lever cutout?
  Bout how far aft of firewall?
  Any input would
  be appreciared.
  Ron Parigoris
 
 | 	 
 
 
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		rampil
 
 
  Joined: 04 May 2007 Posts: 870
 
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				 Posted: Mon Feb 08, 2010 2:45 pm    Post subject: Re: GPS antenna mounted to instrument module | 
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				Yes Ron, the CRP of the panel is transparent to GPS unless you re-did
 your panel in carbon fiber.  The plexi windshield is also transparent to
 GPS.  
 
 Unless you metalized your firewall, it too is essentially transparent.
 
 GPS Antennas are not supposed to "see" down to the horizon, in fact
 most receivers with ignore satellites within 5-10 degrees of the horizon
 ("the masking angle") by orbital calculation in order to avoid atmospheric
 distortions of the signal.  Since your engine is below the inside ceiling
 of the panel, the existence of the engine is a non-factor as well.
 
 My GPS puck is attached to the ceiling of my panel with industrial grade
 double sided foam tape.
 Ivor, your solution requires extra length of coax cable and a connection to be broken whenever you need to pull the panel out of the fuse.  Extra
 coax length and in particular, extra coax connections are extremely hurtful
 to GPS signal strength.
 
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		mau11(at)free.fr Guest
 
 
 
 
 
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				 Posted: Mon Feb 08, 2010 11:05 pm    Post subject: GPS antenna mounted to instrument module | 
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				Hello, ron
  I install two antennas for my  495 GPS : 
  The first (Garmin) is bonded inside the skin on  the roof of the fuselage between the doors before I dismantling the antenna  plastic box, and extracting the electronic element.
  The second antenna from Furuno (is exactly same of  Garmin) is bonded on the top of panel inside the skin. I send to you pictures of  these antennas.
  Good day
  Michel
  Builder 145 - 350 hdv
   
   
   
  09-02-2010 
    mau11 
    De : rparigor 
  Date/heure : 08-02-2010   20:11:07 
  A : Europa 
  Cc : 
  Sujet : GPS antenna  mounted to instrument module 
   
  Hi group. 
 We are working on instrument  module at moment.
 We have a Garmin 295 and was wondering if anyone has  mounted the antenna to the underside of the top of the instrument module just  about above the gear lever cutout?
 Bout how far aft of firewall?
 Any input  would be appreciared.
 Ron Parigoris 
    [quote][b]
 
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		gavanne(at)iconz.co.nz Guest
 
 
 
 
 
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				 Posted: Sun Feb 14, 2010 10:25 pm    Post subject: GPS antenna mounted to instrument module | 
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				Hi Ron  
 I have the Garmin 295 panel mounted and have the external aerial on top of the instrument panel looking through the windscreen in about the centre of the panel. Works very well and its slimline shape is not noticeable.  
    
 Cheers  
 Gavin Lee………ZK-EPA  
          
   
 From: owner-europa-list-server(at)matronics.com [mailto:owner-europa-list-server(at)matronics.com] On Behalf Of rparigor(at)suffolk.lib.ny.us
  Sent: Tuesday, 9 February 2010 7:58 a.m.
  To: Europa
  Subject: GPS antenna mounted to instrument module  
   
    
 Hi group. 
  We are working on instrument module at moment.
  We have a Garmin 295 and was wondering if anyone has mounted the antenna to the underside of the top of the instrument module just about above the gear lever cutout?
  Bout how far aft of firewall?
  Any input would be appreciared.
  Ron Parigoris    	  | Quote: | 	 		  |   http://www.matronics.com/Navigator?Europa-List  | 	  0123456789
        [quote][b]
 
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