Baofeng BF-H6 Series User Manual page 27

You have 4 selections available: OFF/ Mode 1/ Mode 2/ Mode 3. For example: Mode 1= 1s' working and 1s' battery saving.
Mode 2= 1s' working and 2s' battery is saving.
NOTE: The higher the number the longer the battery lasts. The higher number increases the RX sleep cycle, but you may
miss the first few syllables before the RX opens
(5) VOX Function (Vox Level ) - MENU No.4
This function allows hands-free conversations: just speak in the direction of the microphone and the communication will
be automatically activated.
You can choose amongst 11 levels: OFF-10. 1 is the highest level, 10 is the lowest one. If this option is set to OFF, the VOX
function is turned off
Note: the higher is the level, the higher is the microphone sensitivity. The VOX function cannot be modified in SCAN and
FM radio mode.
(6) Wide/Narrow bandwidth (Bandwidth) - MENU No.5
This function is used to set the working bandwidth of the radio.
You can choose between wide or narrow bandwidth.
Wide: 25KHz， Narrow: 12.5KHz
Note: In channel mode, this function cannot be modified.
(7) Backlight (Backlight) - MENU No. 6
With this function you can adjust the auto off time of the display backlight (Bright, 1-10Sec).
When the option is Bright, the backlight is always on, which will affect the battery standby time.
Note: we suggest you setting 4-5s levels.
(8) Dual Watch Operation (Dual Standby) - MENU No. 7
When this function is activated, you can receive the frequency of channel A and channel B at the same time.
If a signal is detected, the▼/▲ pointer will blink on the corresponding channel or frequency.
Note: In Dual Watch operation mode, you can change the parameter of AB channel or frequency freely.
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