User Manual

GX1600/GX1700
Page 30
8 BASIC OPERATION
8.1 RECEPTION
1. After the transceiver has been installed, ensure that the power supply
and antenna are properly connected.
2. Press and hold the key until the radio turns on.
3. Rotate the SQL knob fully counterclockwise until “
” is shown on
the display. This state is known as “unsquelched”.
4. Rotate the VOL knob until noise or audio from the speaker is at a
comfortable level.
5. Rotate the SQL knob clockwise until the random noise disappears and
the “ ” icon is turned off. This state is known as the “squelch
threshold.”
6. Press the
/ key to select the desired channel. Refer to section
“17 CHANNEL ASSIGNMENTS” for available channels.
7. When a message is received, adjust the volume to the desired listening
level. The “
” indicator on the display indicates communications is
being received or the radio is unsquelched.
8.2 TRANSMISSION
1. Perform steps 1 through 6 of RECEPTION.
2. Before transmitting, monitor the channel to ensure it is clear.
THIS IS AN FCC REQUIREMENT!
3. Press the PTT (push-to-talk) switch. The “
TX
” indicator on the LCD
is displayed.
4. Speak slowly and clearly into the microphone.
5. When the transmission is nished, release the PTT switch.
NOTE
This is a noise-canceling microphone. Position the oval slot labeled
“MIC” within 1/2 inch (1.3 cm) from the mouth for optimum perfor-
mance.
8.3 TRANSMIT TIME - OUT TIMER (TOT)
When the PTT switch on the microphone is held down, transmit time is limit-
ed to 5 minutes. This limits unintentional transmissions due to a stuck PTT
switch inside the microphone. About 10 seconds before automatic transmitter
shutdown, a warning beep will be heard from the speaker(s). The transceiver
will automatically go to receive mode, even if the PTT switch is continually
held down. Before transmitting again, the PTT switch must rst be released
and then pressed again.