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About This User Guide
Important regulatory information
The PTP 650 product is certified as an unlicensed device in frequency bands where it is not allowed
to cause interference to licensed services (called primary users of the bands).
Radar avoidance
In countries where radar systems are the primary band users, the regulators have mandated
special requirements to protect these systems from interference caused by unlicensed devices.
Unlicensed devices must detect and avoid co-channel operation with radar systems.
The PTP 650 provides detect and avoid functionality for countries and frequency bands requiring
protection for radar systems.
Installers and users must meet all local regulatory requirements for radar detection. To
meet these requirements, users must install a license key for the correct country during
commissioning of the PTP 650. If this is not done, installers and users may be liable to civil
and criminal penalties.
Contact the Cambium helpdesk if more guidance is required.
USA and Canada specific information
The USA Federal Communications Commission (FCC) has asked manufacturers to implement
special features to prevent interference to weather radar systems that operate in the band 5600
MHz to 5650 MHz. These features must be implemented in all products able to operate outdoors in
the band 5470 MHz to 5725 MHz.
Manufacturers must ensure that such radio products cannot be configured to operate outside of
FCC rules; specifically it must not be possible to disable or modify the radar protection functions
that have been demonstrated to the FCC.
In order to comply with these FCC requirements, Cambium supplies variants of the PTP 650 for
operation in the USA or Canada. These variants are only allowed to operate with license keys that
comply with FCC/IC rules. In particular, operation of radio channels overlapping the band
5600-5650 MHz is not allowed and these channels are permanently barred.
In addition, other channels may also need to be barred when operating close to weather radar
installations.
Note
To ensure compliance with FCC rules (KDB 443999: Interim Plans to Approve UNII
Devices Operating in the 5470 - 5725 MHz Band with Radar Detection and DFS
Capabilities), follow
Avoidance of weather radars (USA only)
Page
3
Important regulatory information
on page 3-20.
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