7.14
Secure Operations
Secure radio operation provides the highest commercially available level of voice security on both
trunked and conventional channels.
By default, the radio automatically enters the encrypted environment without having to manually select
or clear the secure transmission.
7.14.1
Selecting Secure Transmissions
Procedure:
Turn the preprogrammed Secure/Clear switch to the secure position.
• If the selected channel is preprogrammed for clear-only operation, when you press the PTT
button, you hear an invalid mode tone and the display shows CLR TX.
• The radio does not transmit until you set the Secure/Clear switch to the clear position.
• If the “Ignore Secure/Clear Switch when Strapped” programming option is enabled, the radio
transmits without displaying any messages in the strapped mode of operation, regardless of
the Secure/Clear switch setting. This option must be preprogrammed by a qualified radio
technician.
• The Secure/Clear switch only applies when the radio is transmitting.
7.14.2
Selecting Clear Transmissions
Procedure:
Turn the preprogrammed Secure/Clear switch to the clear position.
• If the selected channel is preprogrammed for secure-only operation, when you press the PTT
button, you hear an invalid mode tone and the display shows SEC TX.
• The radio does not transmit until you set the Secure/ Clear switch to the secure position.
• You can request to configure the radio to ignore the clear voice or insecured transmission
when the radio is in secured transmission. Check with your agent for details.
• If the “Ignore Secure/Clear Switch when Strapped” programming option is enabled, the radio
transmits without displaying any messages in the strapped mode of operation, regardless of
the Secure/Clear switch setting. This option must be preprogrammed by a qualified radio
technician.
• The Secure/Clear switch only applies when the radio is transmitting.
7.14.3
Managing Encryption
This chapter explains the encryption feature on your radio.
7.14.3.1
Loading Encryption Keys
Prerequisites:
• Refer to the Key Variable Loader (KVL) manual for equipment connections and setup.
MN002667A01-AV
Chapter 7 : Advanced Features
58
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