User's Manual

Exalt Installation and Management Guide
ExtendAir (TDD) Series Digital Microwave Radios
203591-010 109
2012-09-04
Notes:
1 The devices subject to these requirements 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.
2 The grantee must identify the specific expertise and the training required by the installers for
installing these types of devices.
3 In some instances it is possible that a device may be within 35km 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 35km radius but communicates with outdoor
clients which may be within the 35km radius of the TDWRs.
4 The requirement for ensuring 30 MHz frequency separation is based on the best information
available to date. If interference is not eliminated, a distance limitation based on line-of-sight from
TDWR must be used. In addition, devices with bandwidths greater than 20 MHz may require
greater frequency separation.
5 Devices may be optionally designed not to transmit on channels which overlap 5570–5680 MHz
instead of requiring installers to perform site-by-site adjustments. In that case it is still required
that the devices should be installed professionally and the procedures for registering the device in
the industry database should be included in the users manual.
6 A voluntary WISPA-sponsored database allows operators and installers to register the location
information of the UNII devices operating outdoors in the 5470–5725 MHz band within 35km of
any TDWR location (see http://www.spectrumbridge.com/udia/home.aspx
). This database may be
used by government agencies to expedite resolution of any interference to TDWRs.