Motorola Canopy Backhaul Module - Manual (Page 17)

Backhaul User Manual Issue 3 Page 17 of 53
Channel Plans
Whether using 5.2 GHz or 5.7 GHz modules, frequencies should never be placed closer
than 20 MHz. The Canopy modules allow the operator to chose frequencies every 5
MHz. This is so that in the event of co-location with other equipment the operator can
customize the channel layout for interoperability.
Backhauls and APs operating in the same frequency band (within the 5.2 GHz band or within the
5.7 GHz band) need 100 feet (30 m) of physical separation, as their different transmit and receive
frame structures otherwise would cause interference.
5.2 GHz Recommended Frequencies
The following are the 3 non-overlapping channels that are recommended for use with the backhaul
module:
• 5.275 GHz
• 5.300 GHz
• 5.325 GHz
5.7 GHz Recommended Frequencies
The following are the 6 non-overlapping channels that are recommended for use with the backhaul
module when the ISM frequencies are available:
• 5.735 GHz
• 5.755 GHz
• 5.775 GHz
• 5.795 GHz
• 5.815 GHz
• 5.835 GHz
20 Mbps backhaul modules have less “margin” at the edges of their 20 MHz channel. When using
20 Mbps Backhauls, consider using 25 MHz spacing if site engineering allows it, especially if you
are engineering backhauls with less than 6° directional separation.