User guide

Considering Frequency Band Alternatives Engineering Your RF Communications
140
pmp-0229 (Mar 2013)
As noted above, a 5.7-GHz AP can operate on a frequency as high as 5.840 GHz. Where
engineering plans allow, this frequency can be used to provide an additional 5-MHz separation
between AP and BH channels.
Channels Available for PTP 400 and PTP 600 Radios
Channel selections for radios in the PTP400 and PTP 600 series are quoted in the user guides that
are dedicated to those products. However, these units dynamically change channels when the
signal substantially degrades. Since the available channels are in the 5.4- and 5.7-GHz frequency
band ranges, carefully consider the potential effects of deploying these products into an
environment where traffic in this range pre-exists.
Example Channel Plans for FSK AP Clusters
Examples for assignment of frequency channels and sector IDs are provided in the following
tables. Each frequency is reused on the sector that is at a 180° offset. The entry in the Symbol
column of each table refers to the layout in Figure 36 on Page 142.
NOTE:
The operator specifies the sector ID for the module as described under Sector ID
on Page 541.
Table 34: Example 900-MHz channel assignment by sector
Direction of Access
Point Sector
Frequency Sector ID Symbol
North (0°) 906 MHz 0 A
Northeast (60°) 915 MHz 1 B
Southeast (120°) 924 MHz 2 C
South (180°) 906 MHz 3 A
Southwest (240°) 915 MHz 4 B
Northwest (300°) 924 MHz 5 C