If you set your fail safe to idle, that means it was the electronic ignition switch that cut off power to the ignition and that means that it was a loss of power to the receiver rather than a loss of signal. The most likely reason is the flight switch unless dual switches were involved. If the Rx was powered by a single battery source wire, it could have pulled out. Redundant switches and taking power to the RX via two different connectors is prudent. There has been a move toward one battery but many if not most who make that move, still do two switches and supply the RX at both the battery port and one of the servo ports. Even if every channel is used, a Y can be used to import voltage from the second switch..
Last edited by AA5BY; 03-23-2015 at 03:13 AM.