Operation Manual

3-37
Operations
acknowledgement (ACK). If PTT is not pressed within 5 seconds of the
prompt appearing, the transmission is done automatically. Pressing the
PTT switch causes the channel to change to the communication channel.
If the CLR key is pressed, the alarm is turned off, the displays are cleared,
and the received contents are stored in the Log File. The radio then reverts
to the operation mode before receiving the Individual Call.
3.5.26.4 Transmitting a Group Call
You can send and receive DSC calls from groups of stations that share the
same MMSI number.
To make a Group Call:
1) Set up the Group MMSI number as outlined in Section 3.5.30.3.4.
2) Press the INDV key. Ind appears on the 7-segment display, the DSC
indicator is illuminated, and SHIP appears on the dot matrix display.
3) Press the SQ UP/DOWN key to alternate between SHIP, SHORE, and
GROUP. Stop on GROUP. The GROUP message only appears if you
have set up the Group MMSI number as outlined in Section 3.5.30.3.4.
4) When GROUP appears, press the ENT key. GrP appears on the 7-
segment display and the registered Group MMSI number appears on
Scrolls
every
second
If the CLR key is pressed
Receiving
ENT
MMSI number is displayed
if the nickname is not
registered in the list.
After no operation
for 5 seconds
RAY230_sect3_3.p65 7/13/2001, 1:42 PM37