Set the trasnmitter's mode as "PPM" to use the TM7, TM8.
(**)
With selection of "7ch" mode or "8ch" mode via switch, the receivers above listed are available.
With R6014FS, available channel is limted as 8ch since the transmitter's limitation.
With T7U, the R608FS and R6014FS are available with "8ch" mode but available channel is limited as 7ch since the transmitter's limitation.