Simplex/Duplex Channel Use; Usa, Canada, And International Mode; Noaa Weather Channels - Standard Horizon MATRIX GX2000 Owner's Manual

10.4 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.

10.5 SIMPLEX/DUPLEX CHANNEL USE

Refer to the VHF MARINE CHANNEL CHART (page ) for instructions on
use of simplex and duplex channels.
All channels are factory-programmed in accordance with FCC (USA),
Industry Canada (Canada), and International regulations. Mode of op-
eration cannot be altered from simplex to duplex or vice-versa.

10.6 USA, CANADA, AND INTERNATIONAL MODE

1. To change the Channel Group, hold the [ 16/9 ] key and press the [ WX ] key.
The mode changes from USA to International to Canadian with each press
of the [ CLR ( WX )] key.
2. "USA" will be displayed on the LCD for USA mode, "INTL" will be displayed
for International mode, and "CAN" will be displayed for Canadian mode.
3. Refer to the VHF MARINE CHANNEL CHART (page ) for allocated chan-
nels in each mode.

10.7 NOAA WEATHER CHANNELS

1. To receive a NOAA weather channel, press and hold the [ CLR ( WX )] key
for 2 seconds from any channel. The transceiver will go to the last selected
weather channel.
2. Turn the CH knob on the radio or [ UP ( )] / [ DOWN ( )] keys on the micro-
phone to select a different NOAA weather channel.
3. To exit from the NOAA weather channels, press the [ CLR ( WX )] key. The
transceiver returns to the channel it was on prior to a weather channel.
10.7.1 NOAA Weather Alert
In the event of extreme weather disturbances, such as storms and hurricanes,
the NOAA (National Oceanic and Atmospheric Administration) sends a weather
alert accompanied by a 1050 Hz tone and subsequent weather report on one
of the NOAA weather channels. When the Weather Alert feature is enabled
(see section "12.11 WX ALERT"), the transceiver is capable of receiving this
alert if the following is performed:
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GX2000/GX2100