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intelligent wireless platform
airHaul™ Nexus User Guide
Appendix A – Points to Remember
Antenna
Frequency support
• 5GHz antennas will work between 5.2 and 5.8 GHz.
• 2.4 GHz band antennas will work between 2.4 GHz to 2.485 GHz
Gain
• 5 Ghz band antenna gain is 23 dBi.
• 2.4 Ghz band antenna gain is 24 dBi
• 29 dBi gain antenna is also available in request
Beamwidth
• -3 dB Beam Width 10º -5GHz band antenna
• -3 dB Beam Width 8º - 2.4 GHZ band antenna
Polarization:
• Polarization -Linear Horizontal or Vertical
• Factory assembled sB antennas are vertically polarized.
• Polarity can be changed from vertical to a horizontal polarity by rotating the dish.
Mode of Operations
Different Modes of Operation
• Root Device
- Root Bridge Mode.
• Remote Device
- Remote Bridge Mode
- Remote Router Mode
Bridge mode
• Device will act as a transparent bridge and will operate in Mac layer.
• Bridge mode association is based on channel and MAC authorization only. ESSID will not
be used for the setting up a link.
• If the remote client is configured in a bridge mode and channel needs to be changed then
channel needs to be changed at both the radios.
Router mode
• Device will operate in layer 3 to perform routing. It is pure routing and network provider
has to take care of proper routing as there is no NAT feature in airHaul.
• In a Router mode, the association is based on SSID.
• Remote device configured in a Router mode will automatically follow the Root Bridge for
any change in channel. For this reason, the Remote Router mode is preferred. Please
select a channel with low interference for setting up a link in the beginning.
Radio
• Transmit power – can be varied between -5 dBm to +23 dBm
• To achieve high distance and high throughput at low EIRP (33dBm as per ETSI) a high
gain antenna (29 dBi) with low transmit power of the radio is recommended.
• Setting up a radio at high Transmit power may result into Amplifier saturation, radio tends
to distort EVM. So we suggest that you try to use lower than the maximum power level.
• Maximum recommended Transmit power in 5GHz band is 18dBm and in 2.4 GHz band it
is 20 dBm