APX 4500 O2 CH
39
Procedure:
1
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.
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.
Secure Operations
Enabling Secure Transmission
ADVANCED FEATURES
Secure radio operation provides the highest commercially
available level of voice security on both trunked and
conventional channels.
Unlike other forms of security, Motorola digital encryption
provides signaling that makes it virtually impossible for others
to decode any part of an encrypted message.
SECURE OPERATION IS STRAPED TO THE CHANNEL IT
IS USED ON. RADIO OPERATOR IS NOT REQUIRED TO
SELECT SECURE.
SECURE CHANNELS ARE
MCFMH
AND
PS ALL
