Table of Contents
Advertisement
68012003047-HW
Chapter 7 : Advanced Features
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.
•
For first-time usage, turn on the radio for a minimum of three hours before you remove the battery.
Else the radio may not be able to retain its key for 30 seconds.
Procedure:
1 Attach the KVL to your radio.
The display shows KEYLOAD 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 KEYLOAD.
2 Select the required keys and press Load on the KVL.
The KVL indicates that keyload is successful.
7.14.3.2
Multikey Feature
This feature allows your radio to be equipped with different encryption keys and supports the DES-OFB
algorithm.
There are two types of encryption keys:
58
Advertisement
Table of Contents
