14
Transmitting and Receiving
The UHF2180 transmission is SIMPLEX “one way-at-
a-time.” While you are speaking, you can not receive a
transmission.
The UHF2180 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.
Monitor
You can use the Monitor feature to check for weak signals on the
current channel.
a. Press and hold the MENU and DOWN buttons at the
same time. “ ” icon will be displayed on the LCD screen.
Your radio will pick up signals on the current channel,
including background noise.
b. Press the MENU button to stop the channel monitoring.
Operation