User guide

Canopy System User Guide Network Components
pmp-0229 (Mar 2013)
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Figure 5: Examples of antennas for 900-MHz modules
These 900-MHz modules run the same software and provide the same parameters, network
features, and connections as all other APs and SMs. The physics of longer-wavelength 900 MHz,
the power allowed by regulatory authorities, and the low required level of Carrier-to-Interference
(C/I) ratio combine to support
• line of sight (LOS) range of up to 40 miles (over 64 km)
increased non-line of sight (NLOS) range, depending on RF considerations such as foliage,
topography, and obstructions.
When co-located with an SM of another frequency band range, the 900-MHz AP may serve,
without a tower or BH, as a remote AP (see Deploying a Remote AP on Page 150). 900-MHz
AP/SM links are logical choices for extending radio networks where you wish to
• add subscriber-handling capacity to a tower that is either
o fully used in the other frequency band ranges.
o not available to any other frequency band range.
• reach sparsely populated areas.
• penetrate foliage.
• add a remote AP behind an SM that operates in another frequency band range.
With Only the Integrated Antenna
The enclosure of the 900-MHz integrated AP and SM houses both the hardware and antenna.
These modules can be purchased with a band pass filter to improve performance in environments
in which equipment (for example, a pager) is operating in the spectrum adjacent to the 900-MHz
band.