ADS-B Installation Gallery

Denny Kotz

Wednesday, June 28, 2017 at 02:18 PM ET

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Key Takeaways:

The article details the replacement of a failing and obsolete Narco 50A transponder with a modern Stratus ESG system in an airplane.
The upgrade involved installing a new transponder rack, a more accurate encoder, and a new GPS antenna, which required drilling a hole in the fuselage and careful positioning.
New antenna cables were routed to connect the GPS antenna to the Stratus ESG transponder, which now provides satellite information to a connected Stratus 2S unit, no longer requiring a direct view of the sky.

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My new Stratus ESG Transponder and my Stratus 2S. The 2S is connected by an antenna and power cable inside an open bay in my panel. The Stratus 2S obtains satellite information from the newly installed GPS antenna, so it no longer has to have a visible view of the sky. However, it must retain the proper fore and aft orientation in order to provide the necessary attitude information.