I have a radio and receiver from a hawk-sky kit and the receiver is missing the crystal (I have no idea why). The radio is a Dynam model NE-KO 4 channel. The crystal is for channel 50. The Tx has 72.790 labeled on the back. I can't find a Dynam crystal (other than 2.4Ghz) and was curious if any brand 72Mhz crystal (channel 50) would work for this receiver. I would like to fire the hawksky up and see if she still fly's.