These crystals are compatible with all Futaba "DF" and "DP" receivers.
Compatible with both PCM and FM systems. The receiver crystals are dual conversion. These are for 75Mhz (ground) frequencies.
Crystal sets come with (1) Transmitter and (1) Receiver crystal.
Not all Futaba crystals are in stock, some are special order, and may take a week or more to arrive. If you see the 'In stock' tag below, then you can be assured it will ship immediately.