Motorola APX 8000, User Manual

Page: 68 / 112

when all of the encryption keys is erased. Without this
UKEK key, the radio could not be over the air
rekeyed.
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
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 cancelled without
affecting the desired audio signal.
The Random FM Noise Canceller
operates only in receive mode.
Global Positioning System / Global
Navigation Satellite System
The Global Navigation System (GNSS) in the radio
integrated the information from the Global Positioning
System (GPS) and Global Navigation Satellite
Advanced Features
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