User's Manual

Table Of Contents
Advanced Features
English
78
Requesting an Over-the-Air Rekey (ASTRO
Conventional Only)
This feature, also known as OTAR, allows the dispatcher to
reprogram the encryption keys in the radio remotely. The
dispatcher performs the rekey operation upon receiving a rekey
request from the user.
Procedure:
1 < or > to Reky.
2 Press the Menu Select button directly below Reky.
3 Press the PTT button to send the rekey request.
OR
Press the PTT button again, or the Home or Emergency
button, to exit the feature and transmit in normal mode.
4 If the rekey operation fails, a bad-key tone sounds and the
display shows Rekey fail.
Note: The rekey operation failure indicates that your radio
does not contain the Unique Shadow Key (USK). This
key must be loaded into the radio with the key-variable
loader (KVL) before the rekey request can be sent.
Refer to your local key management supervisor for
more information.
Security
Radio Lock
This feature changes your radio to a more robust security
system that protects the use of the secure encryption keys.
If this feature is enabled in your radio by a qualified radio
technician, when you turn the radio on, the display shows Radio
locked.
Unlocking Your Radio
Procedure:
1 Enter your numeric password.
Secure-equipped radios – 6 to 8 characters.
Clear radios – 0 to 8 characters.
2 Press the Menu Select button directly below Sel to enter the
code.
OR
Press the Menu Select button directly below Del to delete
any unwanted characters.
OR
Press the Menu Select button directly below Cncl to exit the
feature.