Motorola APX MOBILE O3 CONTROL HEAD, User Manual

Page: 96 / 160

Enabling Secure Transmission
1
or to
Sec
and press the Menu Select button
directly below
Sec
.
The display shows and the current key if multi-
key has been enabled.
2 Monitor the mode to be sure it is not in use.
3 Press PTT button to transmit.
Note:
If the selected channel is preprogrammed
for clear-only operation – when you press
the
PTT button, an invalid mode tone
sounds and the display shows
Clear TX
only.
The radio does not transmit until you
disable the secure mode.
The radio can be configured to ignore the
clear voice or unsecured transmission
when the radio is in secured transmission.
Check with your agent for details.
Accessing the Secure Feature
1
or to
Sec
.
2 Press and hold the Menu Select button directly
below
Sec
to display Secure feature screen.
The display shows the
Secure
screen.
Managing Encryption
Loading the Encryption Key(s)
Note:
Refer to the key-variable loader (KVL) manual
for equipment connections and setup.
1 Attach the KVL to your radio.
The display shows
Keyloading
, and all other
radio functions are locked out, except for power
down, and volume.
2 Press the Menu Select button below
Target
.
3
Press the Menu Select button below
Load
.
4 Perform one of the following actions:
• Press the Menu Select button below
Key
for
single-key.
Advanced Features
92
English