Secure Operation - Motorola ASTRO Digital XTS 3000 User Manual

Secure Operation

Secure operation provides the highest level of commercially
Note
available voice security on trunked or conventional channels.
Unlike other forms of security, Motorola digital encryption
provides signalling that makes it virtually impossible for others to
decode any part of an encrypted message.
• Selecting Secure or Clear Transmissions
The Secure/Clear Switch (if programmed, see page 2)
will set the transmit operation of the radio before the
PTT Switch is pressed; the transmit operation cannot
be changed while the PTT Switch is pressed.
If a channel is programmed for
secure-only operation, and the
Secure/Clear Switch is in the
E
clear ( ) position, when the
PTT Switch is pressed, the
display will show "
O O O O N N N N L L L L Y Y Y Y ," an invalid-mode tone
will sound, and the radio will
not transmit until the Secure/
Clear Switch is set to the
D
secure ( ) position.
S S S S E E E E C C C C R R R R T T T T X X X X O O O O N N N N L L L L Y Y Y Y
S S S S E E E E C C C C R R R R T T T T X X X X
Special Radio Features
If a channel is programmed for
clear-only operation, and the
Secure/Clear Switch is in the
D
secure ( ) position, when the
PTT Switch is pressed, the
display will show "
O O O O N N N N L L L L Y Y Y Y ," an invalid-mode tone will
sound, and the radio will not
transmit until the Secure/Clear
Switch is set to the clear (
position.
C C C C L L L L R R R R T T T T X X X X O O O O N N N N L L L L Y Y Y Y
C C C C L L L L R R R R T T T T X X X X
E
)
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