User's Manual

1: INTRODUCTION
Guardian II Portable Radio
The Guardian II series portable radios are crafted with advanced electronics, software and
materials incorporated into a rugged, professional design offering years of reliable service. The
radios provide operation in analog or digital, wideband or narrowband modes, and are APCO
Project-25 compatible. The Guardian II is available in three separate models (pictured below)
allowing the radio to be customized to end user requirements. Numerous combinations of
options, features and channel settings are possible using the Guardian PC Programmer.
Standard features include:
• 1024-channels/ Talkgroups (64 zones of 16 channels/zone)
• AES, DES OFB Encryption
• P-25 Trunking
• P-25 OTAR (Over the Air Rekey)
• Backlit LCD
• Tri-color LED status indicator
• 16-position rotary volume and channel knobs
• Two programmable collar switches
• Emergency and function buttons
Channels can be individually programmed for 25 kHz wideband or 12.5 kHz narrowband
operation, analog or digital, clear or encrypted, with transmitter power settable from .2W to 5W.
Up to eight shadow channels can be programmed for any channel providing all-mode radio
performance. Thirty two encryption keys can be stored in the radio.
Radio Configuration
A radio configuration includes channels, zones and banks.
Channels
Channels contain all the information required to transmit and receive. A channel is referred to as
primary when it is differentiated from a shadow channel. The standard radio has a total of 1024
programmable channels. Each channel can be set for: Receive and transmit frequencies
•
Wideband or narrowband