Operating On Channel 13 And 67 ( Usa Channel Group Only ); Simplex/Duplex Channel Use - Standard Horizon HX300E Owner's Manual

3.5 OPERATING ON CHANNELS 13 AND 67
Channel 13 is used at docks and bridges and by vessels maneuvering in
port. Messages on this channel must concern navigation only, such as meet-
ing and passing in restricted waters.
Channel 67 is used for navigational traffic between vessels.
By regulation, power is normally limited to 1 Watt on these channels. Your ra-
dio is programmed to automatically reduce power to this limit on these chan-
nels. however, in certain situations it may be necessary to temporarily use a
higher power.
Pressing the
to High (5 Watts). When you change from this channel then return to it, low
power will be automatically selected.

3.6 SIMPLEX/DUPLEX CHANNEL USE

Refer to the section "10. VHF MARINE CHANNEL ASSIGNMENT" for in-
structions 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 will change the power output from Low Power (1 Watt)
(USA Channel Group Only)
NOTE
HX300E