Appendix; Frequencies For Distress And Safety Calls - JRC JSS-2150 Instruction Manual

This section lists frequencies used for DSC such as frequencies used for routine calls
and frequencies used for safety and distress calls. It also lists the channel list of ITU
frequencies built-in to this equipment and the instructions for operating the MF/HF radio
equipment.

11.1 Frequencies for distress and safety calls

The following is a list of international
ship stations for distress and safety purposes either with DSC, radiotelephone or telex. CH No.
indicates channel numbers preprogrammed to this equipment.
（ DSC）
TRx（ kHz）
CH No.
--- 2187.5
401 4207.5
601 6312.0
801 8414.5
1201 12577.0
1601 16804.5
- When making DSC calls, the frequencies above can only be used if the
Note
message category is Distress, Urgency, or Safety.
- The DSC frequencies listed above are watched by the DSC watch keeping
receiver.
- The radiotelephone frequencies of 4125.0 kHz and 6215.0 kHz are the same as
the transmission frequencies of ITU channels 421 and 606. However, when
making calls for distress and safety purposes, use these frequencies
simplex channels because duplex mode is used to call coast stations.
1
RR Appendix 15
2
RR Article 52.221.3

11. Appendix

1
transmission frequencies (all simplex) used by coast and
（ radiotelephone）
TRx（ kHz）
CH No.
--- 2182.0
--- 4125.0
--- 6215.0
833 8291.0
1221 12290.0
1621 16420.0
（ telex）
TRx（ kHz）
CH No.
--- 2174.5
411 4177.5
611 6268.0
801 8376.5
1287 12520.0
1624 16695.0
Appendix
2
as
11-1