Motorola APX 4000 User's Guide download pdf (Page 112)

Advanced Features

English

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, you hear a

short tone for single-key radios.

When the key has been loaded successfully, you hear an

alternating tone for multikey radios.

Using the Multikey Feature

This feature allows the radio to be equipped with 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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Motorola APX 4000 User's Guide Page 112