Contents
English
vii
System Setup for ASTRO Advanced Messaging 
Solution  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
Two-Factor Authentication   . . . . . . . . . . . . . . . . . . .92
Logging into Two-Factor Authentication . . . . . . . . .92
Logging out of Two-Factor Authentication  . . . . . . .94
Sending a Query  . . . . . . . . . . . . . . . . . . . . . . . . . . .94
Receiving a Query . . . . . . . . . . . . . . . . . . . . . . . . . .96
Secure Operations   . . . . . . . . . . . . . . . . . . . . . . . . . 96
Selecting Secure Transmissions . . . . . . . . . . . . . . .96
Selecting Clear Transmissions  . . . . . . . . . . . . . . . .97
Managing Encryption   . . . . . . . . . . . . . . . . . . . . . . .97
Loading an Encryption Key   . . . . . . . . . . . . . . . . . .97
Using the Multikey Feature   . . . . . . . . . . . . . . . . . .98
Selecting an Encryption Key   . . . . . . . . . . . . . . . . .98
Selecting a Keyset  . . . . . . . . . . . . . . . . . . . . . . . . .99
Erasing the Selected Encryption Keys . . . . . . . . . .99
Requesting an Over-the-Air Rekey (ASTRO 
Conventional Only)   . . . . . . . . . . . . . . . . . . . . . . .100
MDC Over-the-Air Rekeying (OTAR) Page  . . . . .101
Infinite UKEK Retention  . . . . . . . . . . . . . . . . . . . .101
Hear Clear  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101
Security  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Radio Lock   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
Unlocking Your Radio   . . . . . . . . . . . . . . . . . . . . .102
Changing Your Password   . . . . . . . . . . . . . . . . . .102
Changing Your Tactical Inhibit Password   . . . . . .103
Enabling or Disabling the Radio Lock Feature 
(Secure Radios Only)  . . . . . . . . . . . . . . . . . . . . .  104
Radio Stun and Kill  . . . . . . . . . . . . . . . . . . . . . . . . 104
Using Radio Stun . . . . . . . . . . . . . . . . . . . . . . . . .  104
Using Radio Stun  . . . . . . . . . . . . . . . . . . . . . . . .  104
Using Radio Kill  . . . . . . . . . . . . . . . . . . . . . . . . . .  105
Using Remote Kill  . . . . . . . . . . . . . . . . . . . . . . . .  105
Using Direct Kill   . . . . . . . . . . . . . . . . . . . . . . . . .  106
The Global Positioning System (GPS)  . . . . . . . . . 106
Understanding the GPS Feature  . . . . . . . . . . . . .  106
Enhancing GPS Performance  . . . . . . . . . . . . . . .  107
The Outdoor Location Feature (Using GPS)  . . . .  107
Enabling MGRS Coordinates . . . . . . . . . . . . . . . .  108
Accessing the Outdoor Location Feature  . . . . . .  108
Saving a Waypoint  . . . . . . . . . . . . . . . . . . . . . . .  109
Viewing a Saved Waypoint  . . . . . . . . . . . . . . . . .  110
Editing the Alias of a Waypoint  . . . . . . . . . . . . . .  111
Editing the Coordinates of a Waypoint  . . . . . . . .  111
Deleting a Single Saved Waypoint  . . . . . . . . . . .  112
Deleting All Saved Waypoints . . . . . . . . . . . . . . .  113
Measuring the Distance and Bearing from a Saved 
Waypoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  113
Using the Location Feature While in Emergency 
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  114
Trunking System Controls . . . . . . . . . . . . . . . . . . . 114
Using the Failsoft System   . . . . . . . . . . . . . . . . . .  114
Going Out of Range . . . . . . . . . . . . . . . . . . . . . . .  115
Using the Site Trunking Feature   . . . . . . . . . . . . .  115