Crystals are definitely not just Crystals. Crystals cut for a duel converstion receivers are not interchangeable with crystals cut for single conversion receivers.
The old best advice was to always use the same brand crystal as receiver for example but just before the major shift to 2.4 some years back some brands (both futaba and hitec) included Rxs that included some dual and some single conversion requiring specific crystals. In the case of Hitec their dual conversion crystals have thin blue stripe on the pull tab. Their single conversion crystals have I believe a thin red stripe on the pull tab.
John
Last edited by JohnBuckner; 08-26-2013 at 04:09 AM.