Cabletron Systems RoamAbout 802.11, Дополнительное руководство

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Site Preparation Guide
10
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
Beamwidth (-3dB)
•
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
a. At least 104 km/h (65 mph) with 1.25 cm (0.5 in) ice.
• Wind Surface Area 7.56 square cm (0.248 square ft)