Turbo, I have a Bendix King KT-76A Transponder. I did not upgrade anything. No need to with the Echo. besides, as I keep telling my RV friends, its Sport Aviation, not Mini Airliners. LOL. Yeah, I am one of "those" guys. ;-)
Anyway, I have a Garmin 300XL TSO GPS and no need or desire to replace it in the foreseeable future. Between a spare old smart phone for the passenger to gawk at, and a Samsung Tab2 up front, both running Avare, I have all the traffic/weather and map info I need. The EchoUAT wifi's nicely to all of them so I have a moving sectional map backing up the old school grey screen on the Garmin. No need to have ADS-B info on the Garmin as its screen is too small to be of use for traffic anyway. Done this way, the entire project cost me nothing more than the price of the ADS-B system and eight foot of RG-400 cable.
As to the install, the only mods needed were about 8 foot of RG-400 cable and a hole drilled into an inspection cover for the UAT antenna. Added a spare circuit breaker to run power to the EchoUAT, and the Skyfix boxes. Made a small mount of the GPS antenna that came with the Skyfix. Mounted it on the firewall under cowl. Done. Performs like a champ.
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Scott "Lawbreaker" (yeah, its a fair cop!)
RV-8 N710PX "Bad Attitude!"
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