This is an FM Crystal set that is compatible with most popular Futaba radio systems.
Compatible with R113IP, R105IP, R118GP, and R123F receivers. The receiver crystal is dual conversion. This is 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.