Motorola APX 6000 2 User Manual page 107

Note:
This feature must be preprogrammed by a
qualified radio technician. Check with your
dealer or system administrator for more
information.
Infinite UKEK Retention
This feature enables Unique Key Encryption Key
(UKEK) to be permanently stored in the radio even
when all of the encryption keys is erased. Without this
UKEK key, the radio cannot be rekeyed over the air.
Note:
This feature must be preprogrammed by a
qualified radio technician. Check with your
dealer or system administrator for more
information.
Hear Clear
Note:
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, e.g.
OTA transmission, that is
predominantly present in UHF2 and
900 MHz channel with the following
features.
Compressor Reduces the
Expander
Random FM
Reduces the unwanted effects of
Noise
random FM noise pulses caused by
Canceller
channel fading under high Signal-to-
(Flutter
Noise (S/N) conditions such as in a
Fighter)
moving transportation. The fading
effects, heard as audio pops and
clicks, are cancelled without
affecting the desired audio signal.
background noise
flow and the speech
signal at
transmitting radio.
Expands the speech
while the noise flow
remains the same at
receiving radio.
105
English