Using the old XM+ receiver, my quad failsafe over my neighbor house as XM+ does not support telemetry so I have no RSSI to reference when flying. Yesterday I received my R-XSR receivers from Amazon http://amzn.to/2Cw9Y53 for $26.
Installed on my Storm Moby X2 micro and went to a near by trail to see how far I can go before losing signal. set my VTX to 600mw and went for it. PLEASE SUB AND "LIKE" IF YOU LIKE VIDEO : )