• 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 Clear TX only.
• 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.
7.18.2
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 Secure TX only.
• 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.
7.18.3
Managing Encryption
This chapter explains the encryption feature on your radio.
7.18.3.1
Loading Encryption Keys
Prerequisites:
• Refer to the Key Variable Loader (KVL) manual for equipment connections and setup.
Procedure:
1 Attach the KVL to your radio.
The display shows Keyloading and all other radio functions, except for power down, backlight,
and volume, are locked out.
NOTE:
If the Multi-system Over-the-Air Rekeying feature is in use, the ASTRO profile name is
displayed below Keyloading.
2 Select the required keys and press Load on the KVL.
The KVL indicates that keyload is successful.
MN001424A01-AW
Chapter 7 : Advanced Features
88
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