FUTABA TP-FM TX SYNTHESISED MOD 35MHZ F/FF9
RF Module for Transmitter with Synthesizer System
This allows you to switch your transmission frequency.
No longer do you have to carry around a module for each frequency, or a carton of crystals.
You may choose from any of the frequencies in the 35 MHz band, ch 60 to 93, by moving the two rotary switches on the module.