Receiving A Distress Call - Raytheon TRP 1150 Operation Manual

Note: The purpose is to enable the user to prevent automatic transmissions, e.g. when the
ship is in port.
AUTO POSITION RESPONSE = ON:
Position information is included in direct dial calls and position request acknowledgements
AUTO POSITION RESPONSE = OFF:
Position information is excluded in direct dial calls and position request acknowledgements
Note: The purpose is to enable the user to prevent automatic transmission of the ship's
position. Does not influence distress calls.

Receiving a Distress Call

The DSC Watch Receiver keeps continuous watch the distress and safety frequency 2187.5
kHz.
Reception of a distress or urgency call is indicated by a specific sound signal which contin-
ues until a key is pressed. The Call and Alarm lamp flashes until the call is read out.
Ships receiving a distress alert from another ship should prepare for receiving the subse-
quent distress communication on the telephony distress frequency in the same band in which
the DSC call was received.
Wait for a short interval in order to give a coast station time to acknowledge the DSC distress
alert first. Then, if within range and able to assist, acknowledge the receipt of the distress
alert by radiotelephony:
Press the handset key and say:
- "MAYDAY"
- the 9-digit identity of the ship in distress, repeated 3 times
"This is"
- the 9-digit identity or the call sign or name of own ship, repeated 3 times
- "RECEIVED MAYDAY".
10
Press to read the call
Stops alarm sound
Press to select distress telephony
channel
Selects newer call
Selects older call
Returns to previous telephony display
Returns to previous telephony display
0131