ITCR Base Radio User's Guide
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4
Do Not Distribute
9/8/2011
http://www.osha.gov/SLTC/radiofrequencyradiation/index.html
2.3
Limiting RF Exposure
This transmitter is intended to be operated with a fixed antenna in an
Occupational/Controlled Exposure environment per FCC OET 65 or Controlled Use
Environment per IC RSS-102 and is not subject to specific absorption rate (SAR)
measurements. The Maximum Permitted Exposure (MPE) limit for this type device in
the 100-300 MHz range is 1mW/cm
2
= 10W/m
2
.
The table below lists the calculated lateral distances to be maintained between
personnel and an operational base station transmitter antenna for two typical
antenna gains, 2.1 dBi for a vertical dipole or a vertical monopole over ground plane
and 8 dBi for a 2-element collinear vertical dipole antenna.
Table 1. Required Distance Between Personnel and Transmitting Antenna
Rated
Power, W
PEP
Maximum
Duty Cycle, %
Antenna
Gain,
dBi
Minimum
Lateral
Spacing, cm
75
50
2.1
70
75
50
8
137
Note: RF exposure compliance at multiple transmitter sites must be addressed on a
site-by-site basis. It is the responsibility of the licensee to ensure compliance with
maximum exposure limits.
2.4
Fixed Antenna Guidelines
This section contains antenna information and additional notes regarding methods
to limit RF exposure.
The licensee is required to comply with limits on power and effective antenna
height per 47CFR 90.729.
Install base station antennas on permanent outdoor structures that are not
intended for human occupation.
Acceptable antennas are vertical monopole over ground plane, vertical dipole,
multiple collinear vertical dipole, or similar designs.
