2.While pressing and holding down the [ALM] key, press the [ENT] key. The alarm signal, modulated at 1300 Hz and 2200 Hz tones alternately, is emitted at full power for 45 sec.
The alarm can be monitored from the loudspeaker. The alarm may be canceled at any time by pressing the [ENT] key for immediate speech transmission.
3.Distress calls and Distress message
(1)Speak slowly and distinctly, “MAYDAY, MAY- DAY, MAYDAY, pronounced as the French expres- sion “m’aider”.
(2)This is;
(3)The name of your vessel and call sign three times.
Then, continue with the distress message, which con- sists of:
AGC | STATION |
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MODE | CURS |
| CLARI | TX | |
1 | 2 |
| 3 | ||
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| SQL |
| SCAN | RX | |
4 | 5 |
| 6 | ||
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TUNE | H/L |
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| CH | |
7 | 8 |
| 9 | ||
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| START | ||
2182 | INT | ALM ENT | |||
0 | |||||
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| TEST |
| STOP | ||
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PRESS BOTH to emit
(1) The distress signal MAYDAY;
(2)The name of the mobile station in distress;
(3)Particulars of its position (in latitude and longitude)
(4)The nature of the distress;
(5)The kind of assistance desired;
(6)Any other information which might facilitate rescue, for length, color, and type of vessels, number of persons on board.
4.Indicate the end of message by saying “Over.”
5.When you receive no answer to a distress message, repeat at intervals over again the radio- telephone alarm signal, the distress call and the distress message.
Distress frequencies
All distress frequencies including 2182 kHz are shown below:
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| Telephony SSB (kHz, Carrier) | DSC (kHz, Center) | Telex (kHz, Center) |
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| 2 182 |
| 2 | 187.5 | 2 174.5 |
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| 4 125 | <ITU 421> | 4 | 207.5 | 4 177.5 |
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| 6 215 | <ITU 606> | 6 | 312 | 6 268 |
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| 8 291 | <ITU 833> | 8 | 414.5 | 8 376.5 |
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| 12 290 | <ITU 1221> | 12 | 577 | 12 520 |
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| 16 420 | <ITU 1621> | 16 | 804.5 | 16 695 |
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For other Telex frequencies, refer to APPENDIX.
