
Issue 3.1, July 2006
Page 31 of 162
5.5
5.7GHZ
SPECIFIC
FREQUENCY
PLANNING
CONSIDERATIONS
To fully utilize the 5.725 to 5.850 GHz of allocated spectrum the operator must adjust the lower
center frequency attribute in the installation wizard, described in detail in 8.3.6 “Install Wizard
Pages” Adjustment of the lower center frequency allows the operator to slide the available
frequency settings up and down the 5.7 GHz band. See Figure 13
5732 5738 5744 5750 5756 5762 5768 5774 5780 5786 5792 5798 5804 5810 5816 5822 5828 5834 5840
5734 5740 5746 5752 5758 5764 5770 5776 5782 5788 5794 5800 5806 5812 5818 5824 5830 5836 5842
5736 5742 5748 5754 5760 5766 5772 5778 5784 5790 5796 5802 5808 5814 5820 5826 5832 5838 5844
Band Edge
5725 MHz
Band Edge
5850 MHz
Default
Available Frequency Settings (MHz)
5732 MHz
5734 MHz
5736 MHz
Lower Centre
Frequency
Band Edge
5850 MHz
Band Edge
5725 MHz
Figure 13: 5.7 GHz Available Spectrum Settings
5.5.1
Raster
Considerations
The 30/60 Mbps Backhaul 5.7 GHz variant operates on a 6 MHz channel raster that is set to
even center frequencies. see Figure 13.
5.5.2
Transmit
Power
Reduction
at
the
Band
Edges
Operation at or near the 5.7 GHz band edges can result in a lower maximum transmit power. In
some configurations the 30/60 Mbps Backhaul reduces the power when operating at the edge
channels. The amount of reduction, if any, is dependant on the local regulator authority of the
region of operation. This currently only affects systems configured with Region Code 1.
The power reduction in the edge channels is presented in Figure 14.
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Default
Max Available TX Power (dBm) (license key dependant)
5732 MHz
5734 MHz
5736 MHz
Lower Centre
Frequency
Band Edge
5850 MHz
Band Edge
5725 MHz
Figure 14: 5.7 GHz Band Edge TX Power Reduction (Region Code 1 Only)
5.6
DISTANCE
The 30/60 Mbps Backhaul will operate at ranges from 100m to 200 km; this is within 4 modes
0-5km, 0-40km, 0-100km, and 0-200km. Operation of the system will depend on obstacles in
the path between the units. Operation at 40 km or above will require a near Line-of-Sight path.
Operation at 100m could be achieved with one unit totally obscured from the other unit, but with
the penalty of transmitting at higher power in a non-optimal direction, thereby increasing
Summary of Contents for MOTOwi4 Canopy 30
Page 1: ...Canopy 30 60 Mbps Backhaul User Guide BH30 60 UG en Issue 3 1 July 2006 ...
Page 73: ...Issue 3 1 July 2006 Page 73 of 162 Figure 41 Fixed Frequency Operation Page 2 ...
Page 74: ...Issue 3 1 July 2006 Page 74 of 162 Figure 42 Installation Wizard Confirm Configuration Normal ...
Page 104: ...Issue 3 1 July 2006 Page 104 of 162 Figure 69 System Reboot ...
Page 124: ...Issue 3 1 July 2006 Page 124 of 162 Figure 75 Upper Grounding Configuration ...