User's Manual

Radio Site Planning Hardware Installation Guide
5-6 Airspan Networks Inc. 02030311-07
To adhere to EIRP limitations in the regulatory domain in which you are operating
your ASWipLL system, when purchasing antenna cables take into consideration
cable loss per cable length. EIRP is calculated using cable loss (i.e. EIRP = max.
power output + antenna gain - cable loss). For example, FCC regulations state that
when operating in unlicensed bands, the external antennas must provide an EIRP of
less than or equal to 36 dBm to prevent interference with other radios. Thus,
knowing this EIRP parameter, you can choose the cable that ensures adherence to
this parameter value.
The table below lists examples of cable loss per cable length.
Table 5-1: Examples of cable loss per cable length
Note: Airspan does not supply external antenna cables. It is the responsibility
of the installer to provide the cable and ensure the cable characteristics (e.g.
length and cable loss) enables adherence to EIRP regulations of the country or
area in which the ASWipLL system is operating.