Secure Operations; Enabling The Secure Transmission; Managing Encryption; Loading The Encryption Key(S) - Motorola ASTRO APX 7500 Series Quick Reference Card

Secure Operations

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.

Enabling the Secure Transmission

> <
or to Secure and press the Menu Select button directly
1
below SEC.
The display shows
2
multi-key has been enabled.
Monitor the mode to be sure it is not in use.
3
Press PTT button to transmit.
4
If the selected channel is preprogrammed for clear-only
Note:
operation – when you press the PTT button, an invalid
mode tone sounds and the display shows Clear TX
only.
The radio will not transmit until you disable the secure
mode.
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English
m
, Secure on and the current key, if
Clearing the Secure Transmission
> <
or to Secure and press the Menu Select button directly
1
below SEC.
m
The disappears and the display shows Secure off.
2

Managing Encryption

Loading the Encryption Key(s)

Refer to the key-variable loader (KVL) manual for
Note:
equipment connections and setup.
Procedure:
Attach the KVL to your radio.
1
The display shows Keyloading, and all other radio
2
functions are locked out, except for power down, and
volume.
Press the Menu Select button below Target.
3
Press the Menu Select button below Load.
4
Press the Menu Select button below Key for single-key.
5
OR
Press the Menu Select button below Group for multikey.
> <
or to the required key or group.
6