Uniden FRS1400-2 User Manual page 23

3. Press and hold the call/vox button
while turning the unit on to get into
VOX mode.
4. Press the mode/scan
and call/vox buttons
at the same time to
go into VOX level
control mode. The
LCD flashes VOX
and the current
VOX level.
5. Press the up or down button to adjust the
VOX sensitivity level. (1 represents the
highest sensitivity.)
6. Press the mode/scan or call/vox button
to exit VOX level control mode.
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