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English
Operation
Changing channels
The TwinTop 400/400-L has 8 available channels. To communicate with other
TwinTop 400/400-L users within a range, you must all have your TwinTop 400/400-L
tuned in to the same channel.
1. Press the MENU key once, the current channel number flashes on the
LCD screen.
2. Press the UP or DOWN key to select the desired channel.
3. Press the PTT key to confirm the channel setting.
Note Refer to the “Channel Frequency Table” section of this user manual for
detailed information.
Setting the CTCSS sub-channel
Each channel also has 38 sub-channels to let you set up user groups within the same
channel for more private communication. If you have set the sub-channel, you can
only communicate with other PMR users tuned to the same channel and sub-channel.
1. Press the MENU key twice, the current CTCSS sub-channel number
flashes on the LCD screen.
2. Press the UP or DOWN key to select one of the 38 CTCSS sub-
channels.
3. Press the PTT key to confirm the sub-channel setting.
To switch off the sub-channel function, simply set the sub-channel to 0 (zero).
You can now communicate with any PMR user set to the same channel and which
has switched off the sub-channel operation.
