Operating On Channel 13; Operating On Channel 67; Simplex/Duplex Channel Use - Standard Horizon HX300 Owner's Manual

After a transmission, say "over", and release the PTT (Push-To-Talk) switch.
When all communication with the other vessel is completed, end the last
transmission by stating your Call Sign and the word "out". Note that it is not
necessary to state your Call Sign with each transmission, only at the begin-
ning and end of the contact.
Remember to return to Channel 16 when not using another channel. Some
radios automatically monitor Channel 16 even when set to other channels or
when scanning.

3.5 OPERATING ON CHANNEL 13

Channel 13 is used at docks, bridges and for maneuvering in port. Messages
on this channel must concern navigation only, such as meeting and pass-
ing in restricted waters. In emergencies and when approaching blind river
bends, High power is allowed. Pressing the
output from Low Power (1 Watt) to High (5 Watts). When you change from
this channel then return to it, low power will be automatically selected.

3.6 OPERATING ON CHANNEL 67

When channel 67 is used for navigational bridge-to-bridge traffic between
ships, Normal, High or Medium power may be used temporarily (in the USA
band) by pressing the
transceiver will revert to low power.

3.7 SIMPLEX/DUPLEX CHANNEL USE

Refer to the section "9 VHF MARINE CHANNEL CHART ASSIGNMENT" for
instructions on use of simplex and duplex channels.
All channels are factory-programmed in accordance with FCC (USA),
Industry Canada and International regulations. The mode of opera-
tion cannot be altered from simplex to duplex or vice-versa. Simplex
(ship to ship) or duplex (marine operator) mode is automatically acti-
vated, depending on the channel and whether the USA, International
or Canadian operating band is selected.
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key. When you select this channel again, the
NOTE
key will change the power
HX300