ORIGINAL: mcjustis
The airtronics I bought a JR crystal on ch. 50.
I don't think you can use a JR crystal in an Airtronics Rx, JR Rx are single conversion and your Airtronics is dual conversion, that won't work, single and dual conversion crystals are totally incompatible. You need an Airtronics dual conversion channel 50 crystal for that rx.
Pete