I'm not familar with the Orbit stuff, but the ECU senses the RX pules and that is what is used to make the ECU increase or decrease the fuel pump RPMs thus creating more or less thrust. Any R/C RX should work to test the turbine out. Normally there is a learning setting that you have to go through with the ECU to learn the throttle. During that process the ECU learns the Rx pules for low throttle, high throttle, and shutdown.

JR Gautreaux