Installation and Operation Instructions
Telrad Networks Ltd. BreezeAIR Installation Guide
Page 13 of 29
FCC - 5.8 GHz
IMPORTANT! Antennas must be selected from a list of Telrad Networks approved
antennas. Please refer to Appendix C – FCC approved antennas. It is
the responsibility of the installer to ensure that when using the
outdoor antenna kits in the United States (or where FCC rules apply),
only those antennas certified with the product are used. The use of
any antenna other than those certified with the product is expressly
forbidden in accordance to FCC rules CFR47 part 15.204.
According to FCC part 15.247(b):
(1) The maximum peak output power of intentional radiator shall not exceed 1 Watt (+30
dBm).
(3) If transmitting antennas of directional gain greater than 6 dBi are used, the peak output
power from the intentional radiator shall be reduced below the maximum peak power (of
+30 dBm) as appropriate, by the amount in dB that the directional gain of antenna exceeds
6 dBi.
That is to say that the maximum EIRP (Effective Isotropic Radiated Power) shall not exceed
+36 dBm.
(ii) Systems operating in 5.8 GHz exclusively for fixed, point-to-point operations may
employ transmitting antennas with directional gain greater than 6 dBi without any
corresponding reduction in transmitter peak output power.
That is to say that the maximum EIRP can exceed +36 dBm in point-to-point applications.
Dynamic range of Tx power in BreezeAIR is 40 dB.
In Point-to-Multipoint mode, the unit will automatically reduce the Tx power according to
the antenna gain and regulatory. For example:
For integrated antenna of 23 dBi, the max allowed Tx power is 13 dBm (10 dBm in
MIMO) to meet the EIRP limitation of 36 dBm.
For integrated antenna of 28.5 dBi, the max allowed Tx power is 7 dBm (4 dBm in
MIMO) to meet the EIRP limitation of 36 dBm.
FCC – 4.9 GHz
According to FCC part 90.1215:
(a)(1) The maximum conducted output power should not exceed:
Channel bandwidt
h
(MHz)
High power maximum conducted
output power (dBm)
5
27
10 30
20 33