Sailor SP3530 ATEX, Руководство пользователя

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Operation
13
Narrow band operation
The radio is prepared for narrow band operation. If narrow band
operation is selected (see
BAND on page 25), the number of channels are
doubled in the maritime channels, according to international
recommendations. Refer to the channel table in
Channels on page 2.
Channels are clearly identified with a preceding 4- or 2-digit, while
operating in narrow band mode. Narrow band radios will not always be
completely compatible with wide band operating radios.
For single narrow band configured private channels or "ALT" channels,
an “n” is displayed next to the channel designator.
Note Prior to any initiation of scrambling, the operator must always
identify the calling station in clear voice (unscrambled) on that
channel. Use of scrambling may also be restricted by national
laws.
0845