Standard Horizon Hx750s - Manual (Page 43)

Page 43 HX750S
4: Use of 156.875 MHz is limited to communications with pilots regarding the movement
and docking of ships. Normal output power must not exceed 1 watt.
5: 156.375 MHz and 156.650 MHz are available primarily for intership navigational com-
munications. These frequencies are available between coast and ship on a secondary
basis when used on or in the vicinity of locks or drawbridges. Normal output power must
not exceed 1 watt. Maximum output power must not exceed 10 watts for coast stations or
25 watts for ship stations.
6: On the Great Lakes, in addition to bridge-to-bridge communications, 156.650 MHz is
available for vessel control purposes in established vessel traffic systems. 156.650 MHz
is not available for use in the Mississippi River from South Pass Lighted Whistle Buoy “2”
and Southwest Pass entrance Mid-channel Lighted Whistle Buoy to mile 242.4 above
Head of Passes near Baton Rouge. Additionally it is not available for use in the Missis-
sippi River-Gulf Outlet, the Mississippi River-Gulf Outlet Canal, and the Inner Harbor
Navigational Canal, except to aid the transition from these areas.
7: Use of 156.375 MHz is available for navigational communications only in the Mississippi
River from South Pass Lighted Whistle Buoy “2” and Southwest Pass entrance Mid-
channel Lighted Whistle Buoy to mile 242.4 above head of Passes near Baton Rouge,
and in addition over the full length of the Mississippi River-Gulf Outlet Canal from en-
trance to its junction with the Inner Harbor Navigation Canal, and over the full length of
the Inner Harbor Navigation Canal from its junction with the Mississippi River to its entry
to Lake Pontchartrain at the New Seabrook vehicular bridge.
8: Within 120 km (75 miles) of the United States/Canada border, in the area of the Puget
Sound and the Strait of Juan de Fuca and its approaches, 157.425 MHz is half of the
duplex pair designated as Channel 88. In this area, Channel 88 is available to ship
stations for communications with public coast stations only. More than 120 km (75 miles)
from the United States/Canada border in the area of the Puget Sound and the Strait of
Juan de Fuca, its approaches, the Great Lakes, and the St. Lawrence Seaway, 157.425
MHz is available for intership and commercial communications. Outside Puget Sound
area and its approaches and the Great Lakes, 157.425 MHz is also available for commu-
nications between commercial fishing vessels and associated aircraft while engaged in
commercial fishing activities.
9: When the frequency 156.850 MHz is authorized, it may be used additionally for search
and rescue training exercises conducted by state or local governments.
10: The frequency 156.850 MHz is additionally available to coast stations on the Great Lakes
for transmission of scheduled Coded Marine Weather Forecasts (MAFOR), Great Lakes
Weather Broadcast (LAWEB) and nscheduled Notices to Mariners or Bulletins. F3C and
J3C emissions are permitted. Coast Stations on the Great Lakes must cease weather
broadcasts which cause interference to stations operating on 156.800 MHz until the
interference problem is resolved.
11: The frequency 157.100 MHz is authorized for search and rescue training exercises by
state or local government in conjunction with U.S. Coast Guard stations. Prior U.S. Coast
Guard approval is required. Use must cease immediately on U.S. Coast Guard request.
12: The duplex pair for channel 20 (157.000/161.600 MHz) may be used for ship to coast
station communications.
13: Available for assignment to coast stations, the use of which is in accord with an agreed
program, for the broadcast of information to ship stations concerning the environmental
conditions in which vessels operate, i.e., weather; sea conditions; time signals; notices
to mariners; and hazards to navigation.
14: Available only in the Puget Sound and the Strait of Juan de Fuca.
15: The frequency 156.525 MHz is to be used exclusively for distress, safety and calling
using digital selective calling techniques. No other uses are permitted.
16: The frequency 156.450 MHz is available for intership, ship and coast general purpose
calling by noncommercial vessels, such as recreational boats and private coast stations.
17: The frequency 156.425 MHz is assigned by rule to private coast stations in Alaska for
facsimile transmissions as well as voice communications.