Installing the Equipment
xxxx, Ver 0.01
2–2
RF Exposure Limits The CR45-A-53, CR45-A-58, and CR45-A-58L transceivers, used in
conjunction with 28, 31 and 37 dBi gain antennas, are to be used in point-to-
point applications only. The transceivers can be provided with or without an
integral antenna. If the transceiver is provided without an integral antenna,
then antennas used for these transmitters shall be professionally installed on
permanent structures for outdoor operations. The installer is responsible for
ensuring that the systems using high-gain, directional antennas are used
exclusively for fixed, point-to-point operations.
The installer shall mount all transmit antennas so as to comply with the limits
for human exposure to radio frequency (RF) fields per paragraph 1.1307 of
the Federal Communications Commission (FCC) Regulations. The FCC
requirements incorporate limits for Maximum Permissible Exposure (MPE)
in terms of electric field strength, magnetic field strength, and power density.
The CR45A transceivers are to be installed on customers' rooftops and
towers designated for fixed wireless applications. Table 1 specifies the
minimum distance that must be maintained between the antenna and any
areas where persons may have access, such as rooftop walkways and
sidewalks, as well as through windows and other RF-transparent areas behind
which persons may be located.
Table 2-1 Antenna Radiation Hazard
Radio Frequency Power
Output,
dBm
Antenna
Gain, DBi MPE
Distance
CR45-A-53 5.3 GHz +2.5 dBm 28 dBi 1.5m (5 ft)
CR45-A-58 5.8 GHz
5.8GHz +6.5 dBm
+6.5 dBm 31 dBi
28 dBi 1.5m (5 ft)
CR45-A-58L 5.8 GHz +1.8dBm 37 dBi 1.5m (5 ft)
Antenna Warning
Label The following label wording must be placed on the antenna and visible from
at least 1.5 meters (5 feet) away:
CAUTION: To comply with FCC RF exposure requirements, antennas used
for this device must be installed to provide a separation distance
of at least 15m(5 feet) from all persons to satisfy RF exposure
compliance.
