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UNIDEN Model UH400SX, UH400SX-RM, UH500SX, UH500SX-RM OM
Operating the UHF CB Radio in Duplex Mode
For this example we are adopting CH01 as the channel being used in your area for
[MENU/ENTER]. The duplex
setting ﬂ ashes.
2. Turn the Rotary Channel Selector
at the base or press on the
Remote SPK/MIC to change the
setting between ON or OFF on the
base or “0” or “r” on the
[MENU/ENTER] to store the setting.
4. Press and hold
[MENU/ENTER] to exit
from the menu mode. Only channels
01 - 08 are available for Duplex.
Check with your local Retailer for information on available repeaters.
The UHF CB Radio has a scanning feature
that allows you to search for active channels
Furthermore, the UHF CB Radio is
designed to have two types of scanning;
Open Scanning (OS) and Group
Scanning (GS), to give you ﬂ exibility and
allow you to use the radio more
effectively. Press [SCAN/OS/GS] and
The SCAN icon appears.
The scan direction can be changed
at any time by rotating the channel
selector left or right or pressing
on the Remote SPK/MIC.
uh400sx, uh500sx, uh400sx-RM, uhSec1:22 Sec1:22uh400sx, uh500sx, uh400sx-RM, uhSec1:22 Sec1:22 1/2/08 1:31:27 PM1/2/08 1:31:27 PM