Advanced Operation (*); Operation Of The Ic-M505 With Utif-Ais Option - Icom IC-M603 Instruction Manual

ICOM-UK
Icom UK - AIS
E. Advanced operation (*)
In particular conditions (no visibility, very dense traffic, imminent danger of
collision, etc.), if the skipper considers it pertinent for his safety not to scan any
other channel and only use AIS channel reception, he has three options to obtain
maximum information refreshment:
1) Stop scanning and only scan one or other of the AIS channels, chosen
manually with the channel selection button
.
Channel 70 is always scanned – it is possible to set up double or triple
scanning to listen in to channel 16 and preferential channel.
2) Only scan the two AIS channels by eliminating the tags of all other channels.
Channel 70 is always scanned.
3) Quit the normal range of international channels and switch over to the AIS
range by pressing and holding down the H/L then DIAL keys:
(AIS is then displayed at the top of the screen); the two AIS channels & channel
16 are now the only channels available in this mode.
Then launch scanning (as in normal mode).
Channel 70 is always scanned.
(*) Advanced operation is an added safety measure permitted by the potential of
this equipment; it is not necessary to use it during normal operation.
F. NB. Operation on the IC-M505.
The principle of operation on the IC-M505 is the same as the IC-M603, using the
SCAN button for scanning tagged channels and holding down H/L and pressing
DIAL to toggle between the 3 available channel groups, INT international
(standard group for the UK), USA for frequencies used in American waters and
AIS (being A1, A2 & Ch 16).
Channel 70 is always scanned.
NB.Notes on good practice.
When scanning several channels including the A1 & A2 channels reception of
AIS data will only be received whilst scanning across the AIS channels, if a large
number of channels are tagged or there is a lot of voice activity on the tagged
channels in your scan, the amount of AIS data received will be reduced. Try to
limit your scan channels to a minimum to improve the AIS data retrieval rate.
Using Priority scan will monitor Ch 16 in-between every channel scanned in the
TAG group, in busy areas this type of scan will reduce the amount of AIS data
received.
Warning: the use of a navigation aid does not release the skipper from the
necessary vigilance in respect of the safety of equipment and people.
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