Cabletron Systems 802.11 manual Vswr

Page 16

Site Preparation Guide

Mechanical

•

Size

45.7 cm (18 in)

•

Mounting Method

•

Vertical mast with an outside diameter

 

 

 

between 35 mm (1.4 in) and 42 mm (1.6

 

 

 

in) using u-bolts.

 

 

 

 

 

 

•

Wall using plugs and screws.

Cable

•

Type

RG-58A/U, 50 ohm low-loss coax

•

Length

20 cm (7.5 in)

 

 

 

•

Color

White

 

 

Connector

 

 

 

 

•

FCC Countries

Reverse Polarity-N (Male)

 

 

 

•

ETSI Countries

Standard-N (Female)

 

 

 

•

France

Standard-N (Female)

 

 

 

•

Japan

Standard-N (Female)

 

 

Electrical

 

 

 

 

•

Frequency Range

2.4 GHz

 

 

 

•

VSWR

Less than 2:1, 1.5:1 Nominal

 

 

 

•

Nominal Impedance

50 Ohms

 

 

 

•

Gain

14-dBi

 

 

 

•

Front-to-Back Ratio

greater than 20 dB

 

 

 

•

Half-Power

(-3dB)

 

Beamwidth

 

 

 

 

•

Vertical (E-plane °)

30.8 Degrees

 

 

 

•

Horizontal (H-plane °)

31.4 Degrees

 

 

 

•

Polarization

Linear, Vertical or Horizontal

Antenna Environment

•Operating Temperature +60°C (140°F) - 40°C (-40°F)

•Wind/survival (mph) At least 128 km/h (80 mph)a

•Wind Surface Area 7.56 square cm (0.248 square ft)

a.At least 104 km/h (65 mph) with 1.25 cm (0.5 in) ice.

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Contents RoamAbout Outdoor Antenna Site Preparation Guide Page Iii Page Table of Contents Page Site Preparation Guide OverviewRequirements Lightning protectionGrounding system Line of sightSite Preparation Guide Potential Obstacles to Line of Sight not to scale Factors that can reduce antenna range Large Reflecting SurfacesRequired Data for Antenna Installation Company Fresnel ZoneFresnel Zone Other Considerations Antenna Options RoamAbout 14-dBi Directional AntennaVswr Outdoor Indoor Packaged Kit Component Part Numbers by Domain RoamAbout 7-dBi Omni-Directional Antenna Outdoor Indoor Verify Component Connector Polarity Installation Requirements Reviewing the Site Preparation ChecklistMounting requirements For Additional Assistance Your email address