Selecting Clear Transmissions; Managing Encryption; Loading An Encryption Key; Using The Multikey Feature - Motorola APX 7000 User Manual

Selecting Clear Transmissions

Procedure:
Turn the preprogrammed Secure/Clear switch to the clear
position.
Note: If the selected channel is preprogrammed for secure-
only operation – when you press the PTT button, an
invalid mode tone sounds and the display shows
Secure TX only.
The radio will not transmit until you set the Secure/
Clear switch to the secure position.

Managing Encryption

Loading an Encryption Key

Note: Refer to the key-variable loader (KVL) manual for
equipment connections and setup.
Procedure:
1
Attach the KVL to your radio.
2
The display shows Keyloading, and all other radio
functions, except for power down, backlight, and volume,
are locked out.
3
Select the required keys and press the Menu Select button
directly below LOAD on the KVL. This loads the encryption
keys into your radio.
4
When the key has been loaded successfully, the radio
sounds a short tone for single-key radios.
OR
When the key has been loaded successfully, the radio
sounds an alternating tone for multikey radios.

Using the Multikey Feature

This feature allows the radio to be equipped with as many as 48
different encryption keys and supports the DES-OFB algorithm.
There are two types:
•
Conventional Multikey – The encryption keys can be tied
(strapped), on a one-per-channel basis, through Customer
Programming Software. In addition, you can have operator-
selectable keys, operator-selectable keysets, and operator-
selectable key erasure. If talkgroups are enabled in
conventional, then the encryption keys are strapped to the
talkgroups.
•
Trunked Multikey – If you use your radio for both
conventional and trunked applications, you have to strap your
encryption keys for trunking on a per-talkgroup or
announcement-group basis. In addition, you may strap a
different key to other features, such as dynamic regrouping,
failsoft, or emergency talkgroup. You can have operator-
selectable key erasure.
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