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Permalink Reply by John Austin on January 18, 2018 at 2:47pm

Update:

I tested the AMOC'd NavWorx ADS600-EXP receiver in conjunction with a uAvionix ADS-B skyBeacon and discovered the NavWorx created interference (Baro Alt errors) on the FAA Public ADS-B Performance Reports (PAPR).  Although the NavWorx is no longer transmitting, there are theories it might still be energized by transponder squawks or there are some transmitter components still energized enough to create local interference even though it is not actively transmitting.

I assembled a Stratux dual channel ADS-B receiver with VK-162 external GPS and AHRS and remotely mounted it where the NavWorx had been installed, utilizing the same power and antenna connections.  The VK-162 GPS was placed on the 750's glareshield at the base of the windshield where the NavWorx GPS antenna had previously been.  It all worked great and as expected, there was no interference with the skyBeacon since the Stratux has no transmitter capability at all.

It has also occurred to me that if another ADS-B out device that is "hard-wired" to the transponder, such as the Garmin GDL-82, is used, there might not be an interference problem with the NavWorx receiver since the Garmin is not relying on wireless transmissions.  I have a friend who is going to test this theory soon.

John

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