Ingangsdatum: 23-11-1995
Geldig tot en met: 31-12-2009
1 INTRODUCTION
The 9 GHz SAR
transponder (SART), in addition to meeting the requirements of the relevant ITU-R
Recommendation and the general requirements set out in resolution A.694(17), should comply with the following
performance standards.
2 GENERAL
The SART should be capable of indicating the location of a unit in
distress on the assisting units' radars by means of a series of equally spaced dots
(see resolution A.530(13)).
2.1 The SART should:
.1 be capable of
being easily activated by unskilled personnel;
.2 be fitted
with means to prevent inadvertent activation;
.3 be equipped
with a means which is either visual or audible, or both visual and audible, to
indicate correct operation and to alert survivors to the fact that a radar has
triggered the SART;
.4 be capable of manual activation and
deactivation; provision for automatic activation may be included ;*
.5 be provided with an indication of the stand-by condition;
.6 be capable of withstanding without damage drops from a
height of 20 m into water;
.7 be watertight at a depth of 10
m for at least 5 min;
.8 maintain watertightness when
subjected to a thermal shock of 45¡É under specified conditions of immersion;
.9 be capable of floating if it is not an integral part of the
survival craft;
.10 be equipped with buoyant lanyard,
suitable for use as a tether, if it is capable of floating;
.11 not be unduly affected by seawater or oil;
.12
be resistant to deterioration in prolonged exposure to sunlight;
.13 be of a highly visible yellow/orange colour on all surfaces where this
will assist detection;
.14 have a smooth external
construction to avoid damaging the survival craft; and
.15 be
provided with a pole or other arrangement compatible with the antenna pocket in a
survival craft in order to comply with 2.4, together with illustrated instructions.
2.2 The SART should have sufficient
battery capacity to operate in the stand-by condition for 96 h and, in addition,
following the stand-by period, to provide transponder transmissions for 8 h when being
continuously interrogated with a pulse repetition frequency of 1 kHz.
2.3 The SART should be so designed as to be able to
operate under ambient temperatures of - 20°C to + 55°C. It should not be damaged in
stowage throughout the temperature range of - 30°C to + 65°C.
2.4 The height of the installed SART antenna should be at least
1 m above sea-level.
2.5 The vertical polar
diagram of the antenna and hydrodynamic characteristics of the device should permit
the SART to respond to search radars under heavy swell conditions. The polar diagram
of the antenna should be substantially omnidirectional in the horizontal plane.
Horizontal polarization should be used for transmission and reception.
2.6 The SART should operate correctly when
interrogated at a distance of up to at least 5 nautical miles by a navigational radar
complying with resolutions A.477(XII) and A.222(VII), with an antenna height of 15 m.
It should also operate correctly when interrogated at a distance of up to 30 nautical
miles by an airborne radar with at least 10 kW peak output power at a height of 3,000
ft.
3 TECHNICAL CHARACTERISTICS
Technical characteristics of the SART should be in accordance with
Recommendation ITU-R M.628-2.
4 LABELLING
In addition to the items specified in resolution A.694(17) on general requirements, the following
should be clearly indicated on the exterior of the equipment:
.1 brief operating instructions; and
.2 expiry
date for the primary battery used.
* If an on-board test is performed using a shipborne 9 GHz radar, activation of the
SART should be limited to a few seconds to avoid harmful interference with other
shipborne radars and excessive consumption of battery energy.