Icom M802 Instruction Manual - Page 45

8 WHEN RECEIVING A CALL I To receive a DSC call The independent built-in DSC receiver circuit in the ICM802 scans all distress/safety frequencies, therefore, the "distress," "urgency" and "safety" calls on those frequencies can be decoded at all times. D When receiving a DSC call One of the following actions should be performed when a DSC call is received depending on the received DSC format (or category): • Wait for a voice transmission on the traffic frequency. • Transmit an acknowledgement with DSC or voice. D Display example and operation • Monitoring the traffic frequency Monitor the communication between the calling ship and a coast station, or the calling station transmission via voice on the traffic frequency. •Emergency alarm sounds until pushing [CANCEL/CALL], or short beeps sound, depending on the calling format or category. * Distress RLY * * 123456789 * * * * *E*x*i*t* * * * *T*r*a*f*f*i*c* * * * * * * Distress * * 123456789 * * * * *E*x*i*t* * * * *T*r*a*f*f*i*c* * * * * * * All ships * * 123456789 * * * * *E*x*i*t* * * * *T*r*a*f*f*i*c* * * * * * * G e oGgrroaup h i c * * 1I 2C 3O 4M 5 M6 87 08 29 * * * * *E*x*i*t* * * * *T*r*a*f*f*i*c* * * * * * * Geographic * * 123456789 * Exit Traffic However, "routine," "ships business," "position request" and "group" calls on the other frequencies are received via the transceiver's receiver circuit. Therefore, the transceiver must set to DSC watch mode to decode these calls. • Transmit an acknowledgement When the following DSC is received, an acknowledgement must be sent back to the calling station. •Short beeps, or an emergency alarm sounds until pushing [CANCEL/CALL], depending on the category. * Individual * * ICOM M802 * 7 * * * *E*x*i*t* * * * *T*r*a*f*f*i*c* * * * * * * Position REQ * * ICOM M802 * 8 Exit ACK 37