Extreme Networks Altitude 4760 Series Installation Manual page 68

FCC Approval Statement
wireless systems operating in the 5470 MHz – 5725 MHz band. These wireless devices are
subject to Section 15.407 of our rules and when operating as a master device they are
required to implement radar detection and DFS functions. We are continuing our work to
develop long-term equipment authorization test procedures that will ensure that the devices
comply with our rules that include protecting the TDWR operations. In the interim, the
Commission will now allow certification of wireless master devices with radar detection
function and with DFS capability, if they meet the following conditions:
1 Devices will not transmit on channels which overlap the 5600 – 5650 MHz band.1
2 Devices intended for outdoor use will be further restricted, as follows:
Devices must be professionally installed when operating in the 5470 – 5725 MHz
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band.2
Grantees must provide owners, operators and all such installers with specific
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instructions in their user's manual on requirements to avoid interference to TDWRs
and information that meets the following instructions:
- Any installation of either a master or a client device within 35 km of a TDWR
location shall be separated by at least 30 MHz (center-to-center) from the TDWR
operating frequency 3, 4, and 5.
3 The devices subject to the requirements in this KDB can select the initial channel for
operation to avoid TDWRs and apply the Uniform Channel Spreading requirements (see
FCC 06-96 in ET Docket 03-122 released June 30, 2006) on the remaining available
frequency band of operation. All the other test procedures including the test radar
patterns remain the same at the present time. A revision to the measurement procedure
with modification to the Uniform Channel Spreading requirement and other changes
will be released in the future. The Commission will also address the issue of any field
upgrade option at that time.
4 The grantee must identify the specific expertise and the training required by the
installers for installing these types of devices.
5 In some instances it is possible that a device may be within 35 km of multiple TDWRs.
In this case the device must ensure that it avoids operation within 30 MHz for each of
the TDWRs. This requirement applies even if the master is outside the 35 km radius but
communicates with outdoor clients which may be within the 35 km radius of the
TDWRs.
Altitude™ 4760 Series Access Point Installation Guide
68