Originally Posted by rleffler
There are actually five AMOCs now. The two most recent cover Avidyne as a GPS source and the other is for the EXP. However, the EXP AMOC requires disabling the internal GPS and using it as a ADSB receiver (no out). While not ideal, it does provide a transition period to leave the unit installed.
Slight correction - the NavWorx ADS600-EXP AMOC does not disable the internal GPS, it disables the UAT transmitter. A NavWorx ADS600-EXP that has been modified by the AMOC continues to supply GPS data, FIS, and limited TIS (the traffic "donut" is no longer centered on the receiver).
Bottom line - the ADS600-EXP AMOC is only appealing to those who simply want a stand-alone ADS-B receiver (maybe those waiting 'til 2020 for in-and-out compliance?) or those who have an independent ADS-B out solution such as a Garmin GDL-82 and simply need a receiver for a complete in-and-out sytem.
A note of caution - during testing the AMOC'd ADS600-EXP with a skyBeacon, interference was noted creating 'Baro Alt" errors. I don't know if this is unique to my tests and it would be nice to know for sure by independent confirmation. It has been suggested that an ADS-B out solution such as the Garmin GDL-82, which does not depend on wireless transponder data, might not be subject to interference from the NavWorx ADS600-EXP. At least one of our forum members is testing this and hopefully we'll hear from him soon.