User's Manual Part 2

RS81/RS82 VHF
86
E04572
11.2 Security mode (voice scrambler)
For additional security, a voice scrambler function is available
as an optional accessory. The scrambler uses frequency inver-
sion to encrypt the transmission and will allow secure trans-
mission between compatible radios.
To enable security mode press S
HIFT followed by 0 (SCRM). The
display will show “SEC”, indicating that security mode is on.
To exit security mode, press S
HIFT followed by 0 (SCRM) again,
or O
N/C.
The security mode will be cancelled if the RS82 is placed either
into another mode that requires the use of the PTT key (e.g.
intercom), or if a DSC call is made/received.
11.3 Losing SimNet data
If the selected SimNet nav data source is lost for any reason,
after one minute an alarm will sound to all station speakers,
and the display will show “SOURCE DATA LOST” (Fig 11.2).
The alarm will also be sent across the SimNet bus, where it
may be repeated by other equipment that is able to do so.
Press O
K
or O
N/C to cancel the alarm and return to the previ-
ous display. The alarm can also be cancelled by other equip-
ment on the bus that is repeating the alarm.
If nav data is also being received via the NMEA0183 input, the
RS82 will automatically switch to this source after the loss of
SimNet data.
16
SOURCE
DATA LOST
INT
Fig 11.2 - SimNet nav data source lost