Has anyone used this yet?
http://www.skyguardtwx.com/UAT_Transmitter.html
Much less expensive then current panel mounts, awaiting TSO-C154c certification to be completed.
Since I've upgraded to the Stratus 2 I've enjoyed occasional ADS-B traffic in Foreflight, this would give me traffic all the time when I'm in range of an antenna.
The biggest problem I've got now is running out of accessory plugs.