1 The equipment should conform with the provisions
of CCIR Recommendation 540 applicable to shipborne equipment and in
addition with the provisions given in the following paragraphs.
2 The equipment should comprise a radio receiver,
a signal processor and a printing device.
3 Details of the coverage areas and message categories
which have been excluded by the operator from reception should be
readily available.
4 The receiver should operate on the frequency
prescribed by the Radio Regulations for the system.
5 The equipment should be provided with a facility
to test that the radio receiver, signal processor and printing device
are functioning correctly.
6 The equipment should be capable of internally
storing at least 30 message identifications. After between 60 and
72 hours a message identification should automatically be erased from
the store. If the number of received message identifications exceeds
the capacity of the store, the oldest message identification should
be erased.
7 Only message identifications which have been
satisfactorily received should be stored; a message is satisfactorily
received if the character error rate is below 4%.
8 The receipt of search and rescue information
should give an alarm at the position from which the ship is normally
navigated. It should be possible only to reset this alarm manually.
9 Information for location (B1) footnote and message (B2) footnote designators in programmable memories should
not be erased by interruptions in the power supply of less than 6
hours.
10 The receiver sensitivity should be such that
for a source with an e.m.f. of 2μV in series with a non-reactive
impedance of 50 ohms, the character error rate is below 4%.
11 The printing device should be able to print
at least 32 characters per line.
12 If automatic line feed entails division of
a word, this shall be indicated in the written text. The printing
device should automatically feed paper after completing the printed
message.
13 The equipment should print an asterisk if a
character is received mutilated.