Furuno RC-1800F Operator's Manual page 109

4. Confirm your position and then press the [CALL] to send the call (transmission time: approx.
7 sec.). The display changes as below.
Pos acknowledge
call in progress!
TO SHIP :
123456789
ROUTINE
POS:
35˚00N 135˚00E AT 23:01
DSC FREQ :
TIME TO GO:
5. The DSC standby screen automatically appears after the call is sent.
4-38
2177.0 KHZ
7S