Infinite Ukek Retention; Hear Clear; Radio Lock - Motorola APX 7000 User Manual

2.15.3.8

Infinite UKEK Retention

This feature enables Unique Key Encryption Key (UKEK) to be permanently stored in the radio even
when all the encryption keys are erased. Without this UKEK key, the radio cannot be rekeyed over the
air. The Infinite UKEK Retention settings can be different for each secure profile.
NOTICE: This feature must be preprogrammed by a qualified radio technician. Check with your
dealer or system administrator for more information.
2.15.3.9

Hear Clear

NOTICE: This feature must be preprogrammed by a qualified radio technician. Check with your
dealer or system administrator for more information.
There are two components of Hear Clear.
Companding
Reduces the channel noise, such as OTA transmission that is predominantly present in UHF2 and
900 MHz channel with the following features.
Compressor
Reduces the background noise flow and the speech signal at transmitting radio.
Expander
Expands the speech while the noise flow remains the same at receiving radio.
Random FM Noise Canceller (Flutter Fighter)
Reduces the unwanted effects of random FM noise pulses caused by channel fading under high
Signal-to-Noise (S/N) conditions such as in a moving transportation. The fading effects, heard as
audio pops and clicks, are canceled without affecting the desired audio signal.
The Random FM Noise Canceller operates only in receive mode.
2.16

Radio Lock

This feature requires you to enter a password to unlock the radio when it powers on. The default
password is 0123456789.
Your service provider determines the following requirements:
• Number of characters for a password (maximum 10 characters)
• Number of attempts for password entry
If you are prompted to change the password, enter a new password as reusing the default password is
not allowed.
If you exhaust all attempts at entering the correct password, the radio is deadlocked. Restart the radio
to start over.
NOTICE:
Depending on the configuration, the radio might carry over the number of attempts remaining
even after a power cycle. If you exhaust all attempts in this configuration, the following occurs:
• The radio remains inhibited
• All encryptions and secure keys are erased
6875945M01-NL
Advanced Features
111