Download User Guide - Cyberbajt

CAMBIUM NETWORKS
REGULATORY LIMITS
The local regulator may restrict frequency usage and channel width and may limit the amount of
conducted or radiated transmitter power. For details of these restrictions, see Examples of
regulatory limits on page 282.
Many countries impose EIRP limits (Allowed EIRP) on products operating in the bands used by the
ePMP Series. For example, in the 5 GHz and 2.4 GHz bands, these limits are calculated as follows:
•
In the 5.2 GHz (5250 MHz to 5350 MHz) and 5.4 GHz (5470 MHz to 5725 MHz) band, the EIRP
must not exceed the lesser of 30 dBm or (17 + 10 x Log Channel width in MHz) dBm.
•
In the 5.8 GHz band (5725 MHz to 5875 MHz), the EIRP must not exceed the lesser of 36 dBm or
(23 + 10 x Log Channel width in MHz) dBm.
•
In the 2.4 GHz band (2400 MHz to 2500 MHz), the EIRP must not exceed the lesser of 36 dBm or
(23 + 10 x Log Channel width in MHz) dBm.
Some countries (for example the USA) impose conducted power limits on products operating in
the 5 GHz and 2.4 GHz band.
CONFORMING TO THE LIMITS
Ensure the link is configured to conform to local regulatory requirements by configuring the
correct country code (located in the web management interface, under Configure => Radio). In the
following situations, the country code does not automatically prevent operation outside the
regulations:
•
When using connectorized APs with external antennas, the regulations may require the
maximum transmit power to be reduced. To ensure that regulatory requirements are met for
connectorized installations, see Calculating maximum power level for connectorized units on
page 65. When operating in ETSI regions, it is required to enter a license key in the ePMP web
management interface to unlock 5.8 GHz band frequencies. This key may be obtained from
https://support.cambiumnetworks.com/licensekeys/epmp.
•
When installing 5.4 GHz links in the USA, it may be necessary to avoid frequencies used by
Terminal Doppler Weather Radar (TDWR) systems. For more information, see Avoidance of
weather radars on page 63.
AVAILABLE SPECTRUM
The available spectrum for operation depends on the region. When configured with the
appropriate country code, the unit will only allow operation on those channels which are permitted
by the regulations.
Note
In Italy, there is a regulation which requires a general authorization of any 5.4 GHz radio link which
is used outside the operator’s own premises. It is the responsibility of the installer or operator to
have the link authorized. For details, see:
http://www.sviluppoeconomico.gov.it/index.php?option=com_content&view=article&idmenu=672
&idarea1=593&andor=AND&idarea2=1052&id=68433&sectionid=1,16&viewType=1&showMenu=1
&showCat=1&idarea3=0&andorcat=AND&partebassaType=0&idareaCalendario1=0&MvediT=1
&idarea4=0&showArchiveNewsBotton=0&directionidUser=0
For the form that must be used for general authorization, see:
http://www.sviluppoeconomico.gov.it/images/stories/mise_extra/Allegato%20n19.doc
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