This function is to select the Rx CTCSS. CTCSS is a frequency lower
than audio frequency which attach to carrier. Receiver will not output sound if
the ctcss don't match.
Range
62.5~254.1
Default
67.0
Note
>This
funciton is only valid in Analog channel.
>This function
is valid when the option of 'Rx CXCSS Type' is CTCSS.