What's new
Van's Air Force

Don't miss anything! Register now for full access to the definitive RV support community.

UAT vs transponder class

acropilot

Member
UAT are being advertised as 2020 compliant using any transponder with mode C
Does that mean that if using a UAT that it would be compliant coupled with either a class 1 or Class 2 mode c capable transponder?
 
Thanks for reposting the info. I sure could never figure that out by reading regs tso stuff. It puts me to sleep.
 
Uavionix claims that any mode C or S transponder will do the job.

Since you will receive many different opinions on forums, perhaps you should contact the UAT manufacturer to confirm.

Ron B.
 
RE: UAT vs Transponder Class

FAA Advisory Circular AC 20-165 rev B, which provides guidance for airworthiness approval of ADS-B specifies:

"For the UAT link, 16 watts minimum transmit power at the antenna is required."

A FreeFlight Ranger ADS-B UAT outputs 40 watts max at the antenna after 2dB connector/cable loses.

I haven't found anything that says a Mode C transponder that was acceptable for use today won't be acceptable for use with ADS-B in 2020, so +1 on what Ron77 posted earlier in this discussion.
 
Back
Top