Simrad RS90 Operating Manual page 109

The RS90 VHF radio includes an AIS receiver-only function.
AIS Static and dynamic information
Defined transmit rates for Class A vessels shown below are provided
for reference purposes only. The frequency of messages received
vary due to a number of factors including but not limited to such
factors as antenna height, gain and signal interference.
Static information is either broadcast every 6 minutes, when data
has been amended, or upon request.
Dynamic information is broadcast depending on speed and course
alteration based on the following tables:
Ship's dynamic conditions
At anchor or moored
0-14 knots
0-14 knots and changing course
14-23 knots
14-23 knots and changing course
Ship faster than 23 knots
Ship faster than 23 knots and changing course
Platform's condition
Class B Shipborne mobile equipment not moving faster than 2 Knots
Class B Shipbome mobile equipment moving 2-14 Knots
Class B Shipbome mobile equipment moving 14-23 Knots
Class B Shipbome mobile equipment moving faster than 23 Knots
Search and Rescue aircraft (airborne mobile equipment)
Aids to Navigation
AIS transceiver
Source of information for above table 1-1, 1-2: (ITU
recommendations technical document: ITU-R M.1371-1)
Appendices | RS90 Operating Manual
Normal reporting interval
3 Minutes
10 Seconds
3 1/3 Seconds
6 Seconds
2 Seconds
2 Seconds
2 Seconds
Normal reporting interval
3 Minutes
30 Seconds
15 Seconds
5 Seconds
10 Seconds
3 Minutes
10 Seconds
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