Basic Operation; Reception; Transmission; Transmit Time-Out Timer (Tot) - Standard Horizon MATRIX GX3000S Owner's Manual

10 BASIC OPERATION

10.1 RECEPTION

1. After the transceiver has been installed, ensure that the power supply and
antenna are properly connected.
2. Press and hold the VOL/PWR knob until the radio turns on.
3. Turn the SQL knob fully counterclockwise. This state is known as "squelch off".
4. Turn up the VOL knob until noise or audio from the speaker is at a comfort-
able level.
5. Turn the SQL knob clockwise until the random noise disappears. This state
is known as the "squelch threshold."
6. Turn the CHANNEL selector knob to select the desired channel. Refer to
the channel chart on page 89 for available channels.
7. When a message is received, adjust the volume to the desired listening
level. The "
channel is being used.

10.2 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 "
displayed.
4. Speak slowly and clearly into the microphone.
5. When the transmission is finished, release the PTT switch.
This is a noise-canceling microphone. The oval slot on the bottom of
microphone should be positioned within 1/2 inch (1.3 cm) from the mouth
for optimum performance.
10.3 TRANSMIT TIME - OUT TIMER ( TOT )
When the PTT switch on the microphone is held down, transmit time is limited to
5 minutes. This limits unintentional transmissions due to a stuck 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 first be released and then pressed again.
Page 24
" indicator in the LCD is displayed indicating that the
NOTE
" indicator in the LCD is
GX3000S