ORIGINAL: Loopman
Well,
The distance from the engine to the receiver was 19 inches and the receivers antennas were positioned perpendicular to each other.
Loopman
How far from the engine was your closest servo? On another forum a guy set up his Giant Super Sportster with the throttle servo right beside the gas engine OUTSIDE the firewall. He got two flights before it crashed. A servo with those coiled windings is one big inductive RF receiver that pumps EMI back into the radio receiver via the wired connections. Does not matter the Rx/Tx frequency as a spark discharge is a broadcast on ALL frequencies. Keep the servos at least 8" away from the sparkplug, electronic ignition or magneto/coil.