Antenna Recommendations - Sierra Wireless AirLink ES440 Hardware User's Manual

AirLink ES440 Hardware User Guide
32
• SNMP—SNMP trap reporting and MIB tree parsing
Refer to the ALEOS Software Configuration User Guide for more information
or go to www.sierrawireless.com/en/Support/Downloads.aspx

Antenna Recommendations

Note: Do not remove the secondary antenna. It helps the ES440 achieve the maximum
network coverage. The ES440 works without one installed, but with reduced network
coverage.
Note: If the antennas are located far away from the ES440, keep the cables as short as
possible to prevent the loss of antenna gain.
Warning:
The antenna should not exceed the maximum gain specified in
Antenna Gain (Gain D'antenne Maximal)
as those requiring long lengths of cable and/or multiple connections), you must follow the
maximum dBi gain guidelines specified by the radio communications regulations of the
Federal Communications Commission (FCC) or Industry Canada or your country's
regulatory body (if used outside the US). Also see
American Users on Radiation Exposure
on page 41. In more complex installations (such
Important Information for North
on page 40 for more information.
for a soft copy.
Maximum
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