Raymarine Ray230 - Manual (Page 60)

3-37 Operations
OR
Manually input the MMSI number with the numeric keypad, then press
the ENT key.
ENT
numeric
keypad
Flashing Flashing
6. Press ENT again. A prompt appears on the display instructing you to
press the PTT switch.
7. Press PTT to transmit.
ENT
With manual input, MMSI
number would be displayed
Response
If a response is received after pressing the PTT switch, a receive-
confirmation message is displayed. After 5 seconds have elapsed, the
channel is switched to a communication channel and the Individual Call is
completed.
ACK 5 sec
If no response is received for 3 minutes after pressing the PTT switch, a
prompt to press PTT appears once more. If the PTT switch is not pressed
within 15 seconds after the prompt appears, operation returns to the state
before the call.
NO ACK
Scrolls every second
3 min
PTT PTT