Simrad RS90S User Manual page 123

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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,
2027* and 2028*. (WRC-15)
* From 1 January 2019, channel 2027 will be designated ASM 1
and channel 2028 will be designated ASM 2.
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 to1W. (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 channel70. (WRC-07) In the
maritime mobile service, this frequency is reserved 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. (WRC-12)
r) 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-RM.1371). (WRC-12)
w. In Regions 1 and 3:
Until 1 January 2017, the frequency bands 157.200-157.325 MHz
and 161.800-161.925 MHz (corresponding to channels: 24, 84, 25, 85,
26 and 86) may be used for digitally modulated emissions, subject
to coordination with affected administrations. Stations using these
channels or frequency bands for digitally modulated emissions shall
not cause harmful interference to, or claim protection from, other
stations operating in accordance with Article 5.
Appendices | RS90S User Manual
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