On Saturday, April 11, 2015 at 8:36:02 PM UTC-4, Dave Springford wrote:
However, as stated above, it is not legal to use them in the US
because they are not FCC approved.

And, in USA, they will have greatly reduced range as compared to
performance in Europe or compared to PowerFLARM.

Please do not use the legacy FLARM units in USA.

Hope that helps,
Best Regards, Dave