Transmission; Transmit Time-Out Timer (Tot); Simplex/Duplex Channel Use; Usa, Canada, And International Mode - Furuno FM-4000 Owner's Manual

10.3 TRANSMISSION

1. Perform steps 1 through 6 in 10.2 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, and the indication "
4. Speak slowly and clearly into the microphone.
5. When you have finished transmitting, release the PTT switch.
This is a noise-canceling microphone. Position the oval slot labeled "MIC"
within one-inch (2.5 cm) from your mouth for optimum performance.
10.4 TRANSMIT TIME - OUT TIMER ( TOT )
When the PTT switch on the microphone is held down, transmit time is limited to
five minutes. This limits unintentional transmissions due to a stuck microphone.
About 10 seconds before automatic transmitter shutdown, a warning beep sounds
from the speaker(s). The transceiver will automatically go to the 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 77) 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 mode, hold the [ 16/9 ] key, then press the [ WX ] key. The
mode changes from USA to International to Canadian with each press of
the [ WX ] key.
"USA" appears for the USA mode, "INTL" for the International mode, and
"CAN" for the Canadian mode.
2. See the VHF MARINE CHANNEL CHART (page 77) for allocated chan-
nels in each mode.
FM-4000
NOTE
NOTE
"appears.
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