RTS DV-3400, Instruction Manual, Page: 61 / 79

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Press 1. / to select desired CTCSS/DCS
decode.
CTCSS: 67-254.1H, totally 50 groups. Default:
67HZ.
DCS: 017N-765I, totally 232 groups. "N" on the LCD
means positive code. "I" on the LCD means inverse
code. Default: 017N
Press [PF1] or [PF2] to save and back to standby 2.
state.
FUNCTIONS SETUP
NOTE:
The icon "N" or "L" will hide when CTCSS/DCS encode/decode
function is closed.
Mode Selection
There are two modes for option, VFO (frequency mode) and
Channel mode.
Under standby state, press 1. repeatedly till "UFO"
on the LCD twinkles.
Press 2. / to select desired mode.
OFF: Channel mode
ON: Frequency mode
Press [PF1]/[PF2] to exit. 3.
NOTE:
To manually set the VFO ON/OFF, users need to enable this
function via programming software firstly.
FM Radio
Press 1. repeatedly till "FM" on the LCD twinkles.
Press 2. / to on/off the FM radio function.
ON: turn on FM radio