3k flight with my Bixler 2 fitted with Arkbird flight controller, frsky L9R receiver. Motor is a NTM Prop Drive 2836 1800kv swinging a 7X5 prop on 3s 2200mAh lipo.
Check out the rssi at 3k. Still reading around 3.1 volts which is the same as when the plane is 100m away.
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