VHF Ch70 DSC Watch Keeping Receiver(s}
All VHF Ch 70 DSC watchkeeping receivers will be checked to
ensure that:
Type and serial numbers are as recorded in the previous survey, or
match subsequent amendments to the ship's radio licence.
- Units are type approved, CE-marked or wheel-marked.
Main and reserve power supply is available and connected.
Current drawn from the reserve supply is as expected.
On-air checks of reception are satisfactory.
There is no adverse electrical/magnetic interference from other
equipment.
7.2 The MF /HF radio installation
Each SSB Radio Installation will be checked to ensure that:
Type and serial numbers are as previously recorded, or otherwise
meet with licence amendments.
- Units are type approved, CE-marked or wheel-marked.
Main and reserve sources of energy are available and connected.
Reserve supply current (transmit/receive) is recorded and as expected.
On-air checks with a coast station are satisfactory.
There is no adverse electrical/magnetic interference from other
equipment.
Rated transmitter output power is adequate and as expected.
Antenna type, form and construction are acceptable.
Antenna RF current is satisfactory.
Antenna VSWR is at an acceptable level.
Equipment covers the operating bands appropriate to the vessel's
GMDSS sea areas of operation (A2, A3 and/or A4).
MF /HF DSC controllers/modems
MF /HF DSC controllers/modems will be checked to ensure that:
Type/serial numbers are as previously recorded, or agree with
subsequent licence amendments.
Units are type approved, CE-marked or wheel-marked - and comply
with IMO requirements.
The unit covers the operating bands (MF /HF) required for the ship's
sea areas of operation (A2/A3/A4).
Main and reserve sources of energy are available and connected.
- Maximum reserve current is as expected.
- The MMSI is correct for the vessel concerned.
MARINE COMMUNICATIONS 203
