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

25 watt vhf/fm marine transceivers
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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 PWR/VOL knob until the radio turns on.
3. Rotate the SQL knob fully counterclockwise. This state is known as
"squelch off".
4. Turn up the PWR/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. This
state is known as the "squelch threshold."
6. Rotate the CH knob to select the desired channel. Refer to the channel
chart on page 128 for available channels.
7. When a message is received, adjust the volume to the desired listening
level. The "
tions are being received.
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 "
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. Position the oval slot labeled
"MIC" within 1/2" (1.5 cm) from the mouth for optimum performance.
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 micro-
phone. 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.
GX2000/GX2150
" indicator on the display indicates that communica-
NOTE
" indicator on the LCD is
T X
Page 33

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