My 23ES uses a Garmin GPS 20A position source. Works great. I use a GDL 52 for ADS-B and SiriusXM "in" on the GDU. Awesome. However, I want to remove the GTX 23ES / GPS 20A and replace with a GTX 32 Mode C with a GDL 82 so I can get away from the non-private 1090ES system. But the 23ES works so well I can't justify the down time so I have to wait for a project to come up before I tear into it.
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RV-8
(a few more airplanes too)
I have had the GDU370, GTX23ES, GDL39R and GTN650 since 2013.
Works great.
I fly to OSH every year, crawl under the panel ,slide the unit out and have Garmin update software.
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Mark
RV9 - N14MW - Flying
G3X - ECI Titan I0-320
Catto three blade prop http://www.mykitlog.com/MarkW
Linear Mode
