User's Manual Part 1

Release8PlanningGuide



Issue2,November2007 Draft5forRegulatoryReview 137
12.5.1 900‐MHzChannels
900-MHz AP Available Channels
A 900-MHz AP can operate with its 8-MHz wide channel centered on any of the following
frequencies:
(All Frequencies in MHz)
906 909 912 915 918 922
907 910 913 916 919 923
908 911 914 917 920 924
900-MHz AP Cluster Recommended Channels
Three non-overlapping channels are recommended for use in a 900-MHz AP cluster:
(All Frequencies in MHz)
906 915 924
This recommendation allows 9 MHz of separation between channel centers. You can use
the Spectrum Analysis feature in an SM, or use a standalone spectrum analyzer, to
evaluate the RF environment. In any case, ensure that the 8-MHz wide channels you
select do not overlap.
12.5.2 2.4‐GHzChannels
2.4-GHz BHM and AP Available Channels
A 2.4-GHz BHM or AP can operate with its 20-MHz wide channel centered on any of the
following channels, which are separated by only 2.5-MHz increments.
(All Frequencies in GHz)
2.4150 2.4275 2.4400 2.4525
2.4175 2.4300 2.4425 2.4550
2.4200 2.4325 2.4450 2.4575
2.4225 2.4350 2.4475
2.4250 2.4375 2.4500
The center channels of adjacent 2.4-GHz APs should be separated by at least 20 MHz.
2.4-GHz AP Cluster Recommended Channels
Three non-overlapping channels are recommended for use in a 2.4-GHz AP cluster:
(All Frequencies in GHz)
2.4150 2.4350 2.4575
This recommendation allows 20 MHz of separation between one pair of channels and
22.5 MHz between the other pair. You can use the Spectrum Analysis feature in an SM
or BHS, or use a standalone spectrum analyzer, to evaluate the RF environment. Where
spectrum analysis identifies risk of interference for any of these channels, you can
compromise this recommendation as follows:
• Select 2.4375 GHz for the middle channel
• Select 2.455 GHz for the top channel
• Select 2.4175 GHz for the bottom channel