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English
Operation
Setting the VOX sensitivity (Voice Activated)
In VOX mode, the TwinTop 400/400-L transmits a signal only when it is activated by
your voice or other sounds around you. The unit continues to transmit for 2 seconds
even if you stop talking.
The level of VOX sensitivity is shown by a number on the LCD screen. At the highest
level, the unit picks up even weak noise (including background noise); at the lowest
level, it picks up only quite loud noise.
1. Press the MENU key 4 times, “VOX” is displayed and “OF” flashes on
the LCD screen.
2. Press the UP key to set the VOX sensitivity level (the maximum level is
“3”). To deactivate the VOX function, press the DOWN key until “OF”
appears on the LCD screen.
3. Press the PTT key to confirm your setting. “VOX” steadily appears on
the LCD screen as long as the VOX feature is activated.
Note VOX operation is not recommended if the TwinTop 400/400-L is used in a
noisy or windy environment.
Activating the auto channel and sub-channel scan
Channel scan performs searches for active signals in an endless loop for all 8 channels,
38 CTCSS codes and all 83 DCS codes.
1. Press the MENU key 5 times.
2. Press the UP or DOWN key to begin scanning channels. When an
active signal is detected, channel scan pauses on the active channel.
3. Press the MENU key again, CTCSS flashes on the LCD screen.
Press the UP or DOWN key to begin scanning CTCSS 1-38.
4. Press the MENU key again, DCS flashes on the LCD screen.
Press the UP or DOWN key to begin scanning DCS code 1-83.
5. Press the PTT key to confirm your setting.
