TABLE OF CONTENTS
1 Guardian Overview ......................................................................................................................... 1
1.1
General Description ............................................................................................................................................... 1
1.2
Operational Characteristics .................................................................................................................................... 1
1.3
Link Configurations ................................................................................................................................................ 2
1.4
Physical Description ............................................................................................................................................... 3
1.4.1
Front Panel .................................................................................................................................................... 3
1.4.2
LED Panel ...................................................................................................................................................... 3
1.4.3
User Interface Port ....................................................................................................................................... 4
1.4.4
Setup and COM Ports.................................................................................................................................... 5
1.4.5
Power Connector .......................................................................................................................................... 6
1.4.6
Antenna Connector ....................................................................................................................................... 6
1.4.7
Chassis Dimensions ....................................................................................................................................... 7
1.5
Part Numbers and Availability ............................................................................................................................... 7
1.5.1
Guardian Radio ............................................................................................................................................. 7
1.5.2
Accessories and Options ............................................................................................................................... 8
2.1
Single Coverage Area ............................................................................................................................................. 9
2.2
Network Architecture ............................................................................................................................................ 9
2.2.1
Point-To-Point ............................................................................................................................................... 9
2.2.2
Point-To-Multipoint .................................................................................................................................... 10
2.2.3
Multiple Point-To-Point .............................................................................................................................. 10
2.2.4
Peer-To-Peer ............................................................................................................................................... 10
2.2.5
Store And Forward ...................................................................................................................................... 10
2.2.6
2.3
2.4
Site Selection and Site Survey .............................................................................................................................. 11
2.4.1
Site Selection .............................................................................................................................................. 11
2.4.2
Site Survey .................................................................................................................................................. 12
2.5
2.5.1
Lightning Arrestor Overview ....................................................................................................................... 12
2.5.2
Antenna Overview ...................................................................................................................................... 12
2.5.3
The Wrong Combination ............................................................................................................................. 12
2.5.4
Good Design Practices ................................................................................................................................ 14
2.6
Selecting Antenna and Feedline ........................................................................................................................... 14
2.6.1
Antenna Gain .............................................................................................................................................. 14
2.6.2
Omni-Directional Antenna .......................................................................................................................... 15
2.6.3
Yagi Antenna ............................................................................................................................................... 15
2.6.4
Vertical Dipoles ........................................................................................................................................... 15
2.6.5
Feedline ...................................................................................................................................................... 15
2.6.6
Guardian™ Serial Modem or Analog Radio for Licensed Spectrum PN 001-5006-000 Rev. 3
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