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rparigoris
Joined: 24 Nov 2009
Posts: 792
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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
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| 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
|
| | - The Matronics Europa-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Europa-List |
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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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Ira N224XS |
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mau11(at)free.fr
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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
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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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