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– The lower frequency portion of these channels may be operated as single frequency channels by ship and
coast stations.
– Transmission using the upper frequency portion of these channels is limited to coast stations.
– If permitted by administrations and specified by national regulations, the upper frequency portion of
these channels may be used by ship stations for transmission. All precautions should be taken to avoid
harmful interference to channels AIS 1, AIS 2, ASM 1 and ASM 2. (WRC-19)
mm) Transmission on these channels is limited to coast stations. If permitted by administrations and specified by
national regulations, these channels may be used by ship stations for transmission. All precautions should be
taken to avoid harmful interference to channels AIS 1, AIS 2, ASM 1 and ASM 2. (WRC-19)
n)
With the exception of AIS, the use of these channels (75 and 76) should be restricted to navigation-related
communications only and all precautions should be taken to avoid harmful interference to channel 16, by
limiting the output power to 1 W. (WRC-12)
o)
(SUP - WRC-12)
p)
Additionally, AIS 1 and AIS 2 may be used by the mobile-satellite service (Earth-to-space) for the reception of
AIS transmissions from ships. (WRC-07)
q)
When using these channels (10 and 11), all precautions should be taken to avoid harmful interference to
channel 70. (WRC-07)
r)
In the maritime mobile service, the frequency 160.9 MHz (channel 2006) is designated for autonomous
maritime radio devices Group B that do not enhance the safety of navigation, using AIS technology, in
accordance with the most recent version of Recommendation ITU-R M.2135. Autonomous maritime radio
devices Group B are limited to a transmitter e.i.r.p. of 100 mW and an antenna height not exceeding 1 m above
the surface of the sea.
In the maritime mobile service, this frequency may also be used for experimental use for future applications or
systems (e.g. new AIS applications, man over board systems, etc.). If authorized by administrations for
experimental use, the operation shall not cause harmful interference to, or claim protection from, stations
operating in the fixed and mobile services, including the use of autonomous maritime radio devices Group B.
(WRC-19)
s)
Channels 75 and 76 are also allocated to the mobile-satellite service (Earth-to-space) for the reception of long-
range AIS broadcast messages from ships (Message 27; see the most recent version of Recommendation
ITU-R M.1371). (WRC-12)
(SUP – WRC-15)
t)
(SUP – WRC-15)
u)
(SUP – WRC-15)
v)
w) The frequency bands 157.1875-157.3375 MHz and 161.7875-161.9375 MHz (corresponding to channels: 24,
84, 25, 85, 26, 86, 1024, 1084, 1025, 1085, 1026, 1086, 2024, 2084, 2025, 2085, 2026 and 2086) are identified
for the utilization of the VHF Data Exchange System (VDES). The VDES terrestrial and satellite components
are described in the most recent version of Recommendation ITU-R M.2092. These channels shall not be used
for feeder links. The channels may be merged using multiple 25 kHz contiguous channels to form channel
bandwidths of 50, 100 or 150 kHz. The channel usage is shown below:
– The channels 1024, 1084, 1025 and 1085 are identified for ship-to-shore, shore-to-ship and ship-to-ship
communications, but ship-to-satellite and satellite-to-ship communications may be possible without
imposing constraints on ship-to-shore, shore-to-ship and ship-to-ship communications.
– The channels 2024, 2084, 2025 and 2085 are identified for shore-to-ship and ship-to-ship communications,
but ship-to-satellite and satellite-to-ship communications may be possible without imposing constraints
on shore- to-ship and ship-to-ship communications.
– The channels 1026, 1086, 2026 and 2086 are identified for ship-to-satellite and satellite-to-ship
communications and are not used by the terrestrial component of VDES.
– The channels 24, 84, 25 and 85 are identified for ship-to-shore and shore-to-ship communications.
The Earth-to-space component of the VDES shall not cause harmful interference to, nor claim protection from,
nor restrict future development of, terrestrial systems operating in the same frequency bands.
Until 1 January 2030, the channels 24, 84, 25, 85, 26 and 86 may also be used for analogue modulation
NVR-3000 OPERATION MANUAL & INSTALLATION MANUAL
83
NVR-3000 OM.E 20230109-08
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