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38 Ray54 VHF Radio
If the caller requests that you change to an unsupported working channel
(channel 75, for example) the message INVALID CHANNEL appears on the
LCD. If an acknowledge is sent, the originating station is notified you were
UNABLE TO COMPLY with the channel change request.
Notes: (1) The DSC Call data is stored in the first available slot in the
DSC Call Log, regardless of whether the call is acknowledged.
(2) Pressing the 16/9 key cancels the channel change request and
tunes the radio to channel 16.
(3) If 5 minutes elapse before the call is acknowledged or rejected,
the radio automatically declines the incoming Individual Call.
No Acknowledgement is sent and the radio reverts to the
original channel.
5.3 Group Calls
The Group Call feature sends transmissions that are only received by radios
that share a common Group MMSI number, such as a flotilla or racing fleet.
The Ray54 sends Group Routine calls. As with any DSC operation, the
Group Call is made on channel 70.
Transmitting a Group Call
To call another vessel in the group, you must select the Group MMSI number
to contact and the working channel to be used for the Group Call. The Group
MMSI number is selected from a Phonebook list of preprogrammed
numbers specified using the Menu function. Up to three Group ID numbers
can be stored.
1. Press and release the CALL/MENU key to enter the DSC menu. The
arrow is pointing to INDIVIDUAL.
2. Rotate the CH knob until the arrow points to GROUP.