Managing Encryption; Loading An Encryption Key; Multikey Feature - Motorola APX Series User Manual

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• You can request to configure the radio to ignore
the clear voice or insecured transmission when
the radio is in secured transmission. Check with
your agent for details.
• If the "Ignore Secure/Clear Switch when
Strapped" programming option is enabled, the
radio transmits without displaying any messages
in the strapped mode of operation, regardless of
the Secure/Clear switch setting. This option must
be preprogrammed by a qualified radio
technician.
• The Secure/Clear switch only applies when the
radio is transmitting.

Managing Encryption

This chapter explains the encryption feature on your radio.

Loading an Encryption Key

NOTICE:
Refer to the key-variable loader (KVL) manual for
equipment connections and setup.
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1 Attach the KVL to your radio.
The display shows KEYLOAD, and all other radio
functions, except for power down, backlight, and
volume, are locked out.
2 Select the required keys and press the Menu Select
button directly below LOAD on the KVL.
This loads the encryption keys into your radio.
When the key has been loaded successfully, one of the
following scenarios occurs:
• You hear the radio sounds a short tone for single-key
radios.
• You hear the radio sounds an alternating tone for
multikey radios.
The KVL indicates that keyload is successful.

Multikey Feature

This feature allows the radio to be equipped with different
encryption keys and supports the DES-OFB algorithm.
There are two types of encryption keys: