International Radio User Manual
13
Operation
SETTING THE DCS ADVANCED DIGITAL CODE.
Each channel also has 83 digital codes to let you set a group of 
users for more secured private communication.
a. Press the MENU button 3 times. DCS code is blinking on 
the LCD screen.
b. Press the UP or DOWN button to select the desired DCS 
code.
c. Press  the  PTT button to confirm the DCS channel 
setting.
Transmitting and Receiving
   The UHF2100 transmission is “one way-at-a-time.” While 
you are speaking, you can not receive a transmission.
   The UHF2100 is an open-license band. Always identify 
yourself when transmitting on the same channel.
IMPORTANT: Before transmitting on a UHF channel listen to ensure 
it is not already in use.
Transmitting (sending a speech)
The unit is continuously in the Receive mode when the unit is 
turned ON and not transmitting. When a signal is received on the 
current channel, “RX” icon will be displayed on the LCD screen and 
the receiver LED will light up.
a. Press and hold the PTT (push to talk) button to transmit 
your voice. “TX”  icon  will  be  displayed  on  the  LCD 
Screen.
b. Hold  the  unit  in  a  vertical  position  with  the  MIC 
(Microphone) 5 cm away from the mouth. While holding 
the PTT button, speak into the MIC  (microphone)  in a 
normal tone of voice.
c. Release  the  PTT  button  when  you  have  finished 
transmitting.










