Security; Radio Lock - Motorola APX 7000 User Manual

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 in a transportation. The
fading effects, heard as audio pops
and clicks, are cancelled without
affecting the desired audio signal.

Security

Radio Lock

background noise
flow and the speech
signal at transmitting
radio.
Expands the speech
while the noise flow
remains the same at
receiving radio.
The Random FM Noise Canceller
operates only in receive mode.
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.
• Press the Menu Select button directly below
Del to delete any unwanted characters.
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