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-   -   WAAS and Serious Satellite GPS Antenna Location (https://vansairforce.net/community/showthread.php?t=170877)

Frankster13 04-22-2019 08:46 PM

WAAS and Serious Satellite GPS Antenna Location
 
What is the consensus on mounting GPS antennas? I am somewhat reluctant to mount these two antennas on the top of the fuselage aft of canopy but I don't want to mess around and mount internally on a ledge under back canopy only to get lousy reception.

Thoughts?

NewbRVator 04-22-2019 08:50 PM

FWIW I just spoke to a very experienced avionics pro today and he said he is mounting GPS antennas on the dash visor with good effect

airguy 04-23-2019 08:13 AM

Quite a few of us (myself included) have built a small shelf under the FWF engine cowling and installed them there. The fiberglass cowling is transparent to the GPS radio signals as long as you don't use paint with metallic pigments.

I've got two Garmin and one Dynon GPS antennas up there with excellent reception.

Carl Froehlich 04-23-2019 08:55 AM

I ran with a GX-60 GPS antenna and a 396 GPS and XM weather antennas on the glare shield of the RV-8A for years with no issue. I mounted a SkyView GPS receiver and GTN-650 antenna on the glare shield in the RV-10 and it worked. I note the Garmin GPS antennas are more sensitive to mounting than the SkyView, so your mileage may vary depending on what you are installing. For the new RV-8 project the SkyView GPS receiver is going on the glare shield but the GTN-650 antenna is mounted on the fuselage just aft of the rear seat, but still under the canopy.

Carl

jpowell13 04-23-2019 10:22 AM

My xm and gps antennas are on glare shield. The antennas need to be black or the reflection is a problem. Also, gps antennas located too close to each other will interfere with one another. John

GalinHdz 04-23-2019 10:50 AM

Quote:

Originally Posted by jpowell13 (Post 1341738)
My xm and gps antennas are on glare shield. The antennas need to be black or the reflection is a problem.

Similar to my setup except mine are under my glareshield with phonelic covered cutouts.





My G430W antenna has been there since 2009 while my Dynon antenna has been there since 2013. I have never had a problem with either of them while both of them show full satellite reception.

:cool:

airguy 04-23-2019 12:08 PM

Quote:

Originally Posted by jpowell13 (Post 1341738)
Also, gps antennas located too close to each other will interfere with one another. John

Not universally true - I've got almost 400 hours like this with no interference.


jpowell13 04-23-2019 01:35 PM

Interference
 
In my case, it was my iLevil portable ADSB/GPS receiver that was interfering with the Garmin antenna for my 400W. It was interesting to watch the signal strength bars on the 400W drop as you moved the iLevil closer to the Garmin antenna. John

dave4754 04-23-2019 07:40 PM

GPS puck location
 
I have my Dynon under the rear window and on a shelf mounted to the crossbar.

Many before me did this with no problems.

rightrudder 04-23-2019 11:13 PM

Black pucks on the glare shield...works beautifully. I use the "hook" velcro on the pucks which grabs the acrylic carpet on the glare shield like crazy.


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