External Antennas - Cisco Aironet 1520 Series Getting Started Manual

External Antennas

Warning In order to comply with radio frequency (RF) exposure limits, the antennas for this
product should be positioned no less than 6.56 ft (2 m) from your body or nearby persons.
Statement 339
Warning Do not locate the antenna near overhead power lines or other electric light or power
circuits, or where it can come into contact with such circuits. When installing the
antenna, take extreme care not to come into contact with such circuits, because they
may cause serious injury or death. For proper installation and grounding of the antenna,
please refer to national and local codes (for example, U.S.:NFPA 70, National Electrical
Code, Article 810, Canada: Canadian Electrical Code, Section 54). Statement 1052
Warning Only trained and qualified personnel should be allowed to install, replace, or service this
equipment.
Statement 1030
The access point is equipped with three N-type radio frequency (RF) connectors (antenna ports 1, 2,
and 3) on the top of the unit for external antennas to support multiple input single output (MISO)
operation as shown in Figure 1. The access point also has three N-type RF connectors (antenna ports
4, 5, and 6) on the bottom of the unit for external antennas as shown in Figure 2. When using the
optional Cisco compact omnidirectional antennas, the 2.4- and 5-GHz antennas connect directly to
the access point. The Cisco omnidirectional antennas use vertical polarization.
The access point can also be equipped with specific third-party external antennas (see Table 1), subject
to local regulatory requirements. If you install third-party antennas, be sure to install them with all
waterproofing steps recommended by the third-party manufacturer. For additional information, see
the documentation shipped with the antenna.
The FCC limits the amount of power this device can transmit. Power transmitted is a
Note
combination of the amplification of the signal and the antenna gain. The access point has been
designed to operate with the antennas listed below having a maximum gain of 8 dBi for
2.5-GHz and 17 dBi for 5-GHz antennas. Antennas not included in this list or having a higher
gain are strictly prohibited for use with the access point. The required antenna impedance is
50 ohms.
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