Security; Radio Lock - Motorola APX 5000 3 User Manual

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.
124
English
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
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.
The Random FM Noise Canceller
operates only in receive mode.

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.
remains the same at
receiving radio.