Motorola APX 4000Li, User Manual, Page: 69 / 102

• 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:
Conventional Multikey
The encryption keys are strapped on a one-per-channel
basis, through CPS. 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 the radio is used for both conventional and trunked
applications, strap the encryption keys for trunking on a
per-talkgroup or announcement-group basis. In
addition, a different key can be strapped to other
features, such as dynamic regrouping, failsoft, or
emergency talkgroup. You can have operator-selectable
key erasure.
Erasing the Selected Encryption Keys
This feature allows you to erase all or selected encryption
keys.
• Erasing the single key in radios with the single-key
option and erasing all keys in radios with the
multikey option by using the preprogrammed
Top
Side (Select) button and Top (Orange) button:
a. Press and hold the Top Side (Select) button.
b. While holding Top Side (Select) button down,
press the Top (Orange) button.
The display shows Please wait . When all the
encryption keys have been erased, the display
shows
All keys erased .
NOTICE:
Do not press the Top (Orange) button
before pressing the Top Side (Select)
button, unless you are in an emergency
situation as this sends an emergency
alarm.
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