John Austin wrote:
Well ... bummer!
Today I flew two test flights with the NavWorx ADS600-EXP connected (and the UAT disabled per the AMOC) and with my skyBeacon providing ADS-B out. It worked great with my iFly 740, providing TIS, FIS, and WAAS GPS data to the iFly. HOWEVER, I requested a PAPR report after each flight and both reports showed approximately 50% "Baro Alt" errors! I then disconnected the ADS600-EXP and flew a third flight and the error was completely resolved!
There had been a hint of problems in early testing with the skyBeacon and uAvionix suggested it might be interference from the NavWorx ADS600-EXP and I disconnected it for the remainder of the testing until today. Looks like they were right!
I think it would be fine to use the ADS600-EXP as a standalone ADS-B receiver, but apparently it is not compatible with the skyBeacon. I would definitely test for interference if using the ADS600-EXP in conjunction with any other ADS-B out device!
I assembled a Stratux dual-channel receiver with AHRS and VK-162 external GPS and remotely mounted it where the NavWorx ADS600-EXP had been. I put a splitter cable on the radios and connected them to my external RAMI AV-74 antenna and put the VK-162 GPS on the Zenith STOL 750's glareshield at the base of the windshield. It all worked great and best part, I got a clean PAPR report - no interference with the skyBeacon. Of course, I didn't expect any since the Stratux has no transmitter, but I wanted to verify after my experience with the ADS600-EXP.
Splitting the antenna cable works great with the Stratux dual channel radios - there is apparently some signal loss by splitting the signal, but apparently this is more than made-up for by the superiority of the externally-mounted antenna!
BTW, it has occurred to me that the NavWorx ADS600-EXP might not cause interference with other ADS-B out devices such as the Garmin GDL-82, since they are "hard-wired" to the transponder and not wirelessly "sniffing" the signals as the skyBeacon does. It would be interesting to see some reports of the GDL-82/NavWorx receiver combo!