GPS antenna Garmin/Dynon

[b52sfamily]

I am planning on the 7" Skyview system and a Garmin GTN 750. The question is: Can I use a single Garmin antenna to run both systems (or the other way around) will the Dynon antenna run both the Skyview and Garmin units?  The Dynon antenna has an advantage in that it is powered from the Dynon backup battery in the event of a main buss power loss...
Thanks for the help guys, Bryan

 

[jakej]

Bryan

The Dynon antenna won't 'run' the GTN but I'd add the Dynon antenna for redundancy & $200 extra shouldn't 'break the bank'

Jake J

 

[dynonsupport]

Even though they're both receive GPS, their architecture is actually a bit different. The short answer is no - they each need their own antennas.

 

[bkthomps]

garmin is very picky about their GPS antenna, placement, and model number.

 

[johnsteichen]

After you spend 14k in the GTN 750 you want to use their antenna. I have the 750 and am thrilled with the way it works with the Skyview and the AP. the Skyview becomes your backup nav and you want it independent anyway.

 

[dynonsupport]

So just to make sure everyone's on the same page: There's a difference between being able to use the same "antenna" and being able to use an external device as a position source for SkyView.

Behind the scenes, the things that we call the "antenna" is actually a full-fledged GPS receiver/antenna combo, that talks serially to SkyView. It's basically a self-contained GPS chip+antenna without a display.

The GTN/430/etc, in contrast, uses "just" an antenna outside the aircraft, which then has its signal processed internally in the unit.

So under no circumstance will splitting wires from the thing that looks like an antenna connect to both devices, nevermind the cert implications. One has RF going through its wire, the other data.

BUT, the GTN/430/etc does have serial/ARINC outputs that allow it to be used as a position and nav source, just like the SV-GPS-250, on SkyView, which is what johnS is referring to.

We always recommend using the SV-GPS-250 as the primary position source, whether or not you have an external GPS unit, because it can provide SkyView with 5 Hz data, which practically no other GPS device makes available external to themselves.