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i n t e l l i g e n t w i r e l e s s p l a t f o r m
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