English
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.
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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.
Unlocking Your Radio
1 Enter your numeric password.
Secure-equipped radios – 6 to 8 characters.
Clear radios – 0 to 8 characters.
2 Perform one of the following actions:
Press the Menu Select button directly below Sel
•
to enter the code.
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