Just an update to the initial review. I have to upgrade it to 5 stars. I called UAVionix customer support to get some input for trouble shooting the issue with barometric altitude output. Curt from support answered right away, was very knowlegable, and provided several trouble shooting tips. When I rang out the cable to the transponder I found I had squashed the serial connection wire in the DB9 shell and shorted it to the case. Easy fix, and the subsequent test flight produced a perfect score on the Public ADS-B Performance Report. In addition, Curt knew the cause of the faint 1 hz popping noise. The new UAT antenna is mounted too close to the COM antenna. There isnt really a better mounting position available, and the noise is very faint during taxi and inaudible in flight so its a non-issue.

I installed the EchoUAT/SkyFYX bundle in my RV6 on 10-1-2019. The install and setup was fairly easy although I had a some issues with the EchoUAT detecting the altitude being sent by my GTX327 transponder, which was causing failures in the FAA PAPR report. There is an advanced setting to set the Transponder Threshold which is not documented in the installation manual. In my case, the default setting was 1550 and I needed to lower it to 1320. Once the setting was changed, the altitude reported correctly and the unit passed the FAA PAPR report with no errors. I installed the EchoUAT with a direct serial connection to my GTX327. This allowed the transponder mode and squawk code to be sent to the EchoUAT over the serial port connection rather than having the EchoUAT sniff the electric system for this information. I think the EchoUAT is a good deal and works as advertised. I love no longer needing a separate ADSB-IN receiver floating around in the cockpit. The only reason for 4 stars instead of 5 stars is because I had to do a fair amount of digging to find out the advanced Transponder Threshold setting would fix the altitude problem and they should include information about this setting in the installation manual.

I ordered, received and installed the Echo and SKYfyx last week. Its a fairly complete kit and includes wire harnesses, remote GPS antenna and UAT antenna (slightly shorter than a transponder antenna). Mounting screws, antenna male-male adapter and printed instructions were NOT included, but fortunately I had the parts on hand. Cards with the URLs for the manuals were in the box. Curious that the provided stub coax cable (about 10 long) had a female end on it like the antenna. To configure the UAT an app has to be downloaded to your phone or tablet. The app was easy to use and can be used as a monitor as well to see what the transmitter is outputting. On the first flight I was able to obtain a Public ADS-B Performance Report. The PAPR indicated some of the barometric altitude reports had issues so that has to be troubleshooted yet. It was a short, low altitude flight so it may be that a longer higher altitude flight may be fine. I installed a serial connection between my Sandia 165 and the UAT with unshielded wire so maybe that has to be upgraded. The install also seemed to introduce a faint popping noise into the intercom on the pilot side. The ADSB in is working fine and showing traffic on my iFly. So far it seems like a good system for the money