Cabletron Systems 9033073 manual Mounting the Antenna, Mounting the Directional Antenna

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Installing the Antenna

Mounting the Antenna

11.After verifying that the communications link is fully operational, secure all cables and use weatherproofing tape to seal all outdoor connectors.

Mounting the Antenna

The RoamAbout antennas are available as a RoamAbout 14-dBi Directional and a RoamAbout 7-dBi Omni-Directional. This section includes mounting instructions for each of these antenna types.

When mounting multiple antennas on a single mast, use the following methods to minimize cross-talk between antennas:

Place the antennas as far apart as possible.

Alternate the mounting of directional antennas for vertical and horizontal polarization (figures on the following pages illustrate mounting for vertical polarization).

Mounting the Directional Antenna

You can mount the RoamAbout 14-dBi Directional Antenna on a mast or on a flat vertical surface such as a wall. In most cases, mounting the antenna on a mast allows more flexibility in adjusting the height and direction of the antenna in order to better aim it at the opposite end of the wireless link.

Mounting on a Mast

To mount the RoamAbout 14-dBi Directional Antenna on a mast, proceed as follows:

1. Verify that you have all the items listed below:

The RoamAbout 14-dBi Directional Antenna

A metal backing plate (included with antenna)

Two U-bolts and two clamps (included with antenna)

Outdoor Antenna Installation Guide

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Contents RoamAbout 802.11 Outdoor Antenna Installation Guide Page RoamAbout 802.11 Outdoor Antenna Installation Guide Page Canada Regulatory InformationOutdoor Antenna Installation Guide Your email address Getting HelpPage Table of Contents Determining Range & Clearance RoamAbout 14-dBi Directional Antenna Page About This Guide IntroductionWho Should Use This Guide Installing the Antenna Installation GuidelinesOrganization of this Guide Introduction This ChapterAppendix D Calculating Range & Clearance Appendix C The Antenna Cabling SystemRoamAbout Outdoor Kit Introduction Configuration and Management Installing a RoamAbout Access PointHardware Specifications Finding Additional InformationOther Sources of Information Additional files on your diskettesPage Site Prerequisites Installation GuidelinesOverview of the Indoor Installation Pre-Installation ChecklistSelecting the Right RoamAbout PC Card Indoor Installation OverviewRoamAbout PC Card Identification Installation Guidelines Placement of the RoamAbout Access Point Installation Guidelines Antenna Cable Route Placement of the Lightning ProtectorInstallation Guidelines Antenna Mast/Wall Bracket not included in kit Overview of the Outdoor InstallationAntenna Placement Potential Obstacles for a Directional Antenna Tripod Mount Antenna Mast/Wall BracketAntenna Mast Requirements Wall Side MountRoamAbout Antennas Grounding SystemAntenna Polarization Antenna Alignment AP Manager Point-to-Point Diagnostics ScreenAntenna Cable Routing Before Climbing the Roof Page Fresnel Zone Determining Range ClearanceDetermining Range & Clearance Other Considerations Page Planning the Antenna Installation Installing the AntennaElectrical Hazard Warnings Safety PrecautionsElectrical Hazard Warnings Installation Overview Mounting the Directional Antenna Mounting the AntennaMounting on a Mast Prevent damage to the plastic antenna mounting base Mounting on a Flat Surface Mounting the 14-dBi Antenna to a Wall Mounting the Omni-directional AntennaMounting the Omni-Directional Antenna to a Mast Connecting the Antenna Cable Installing the Antenna Sealing the Cable Connectors RoamAbout 14-dBi Directional Antenna Contents of the Antenna BoxGeneral Description RoamAbout 14-dBi Directional Antenna Table A-1 Specifications 14-dBi Directional AntennaRoamAbout 7-dBi Omni Directional Antenna RoamAbout 7-dBi Omni-Directional Antenna Antenna Cabling System Selecting the Correct Connector TypeOutdoor Cabling Components Antenna Cabling System Table C-1 Selecting the Correct N-Type ConnectorOutdoor Cabling Components Table C-2 Cable Assembly Specifications RoamAbout Cable AssemblyRoamAbout Lightning Protector Table C-3 Lightning Protector SpecificationsFigure C-1 Lightning Protector Installation InstallationRoutine Maintenance Low-Loss Antenna Cable Table C-4 Cable Specifications for the 6m 20 ft AntennaTable C-6 Cable Specifications for the 22m 75 ft Antenna Table C-5 Cable Specifications for the 15m 50 ft AntennaPage Introduction Calculating Range ClearanceDynamic Range Budget MBit/s Omni-Directional 7-dBi Table D-1 Dynamic Range FCCTable D-2 Dynamic Range ETSI. France & Japan Determine Line-of-Sight Clearance Link speed versus RangeDynamic Range Minimum Clearance Maximum Range Table D-3 Minimum Clearance for Maximum RangeCalculating Range & Clearance Determine Typical Range Table D-4 Actual Clearance and Typical Range Which Antenna do You Need