User's Manual

ITCR Wayside User’s Manual
© 2013 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential
5/16/2013 3
2.2 Limiting RF Exposure
Please refer to the RF Energy Exposure Guide packed with each radio for
specific information regarding safe distances that must be maintained
between personnel and energized transmitting antennas.
The information in the RF Energy Exposure Guide is determined from FCC and
Industry Canada rules that when followed, limit human exposure to radio frequency
energy to acceptable levels. Note that the RF Energy Exposure Guide calculates the
larger lateral safe distances for an uncontrolled environment. Obeying these limits
will protect both railroad employees and the general public.
This radio is intended for use by railroad employees who have full knowledge of
their exposure and can exercise control over their exposure to meet FCC and IC
limits. This radio device is not intended for use by consumers or the general
population.
This transmitter is intended to be operated with a fixed or mobile antenna in an
Occupational/Controlled Exposure environment per FCC OET 65 or Controlled Use
Environment per IC RSS-102. Maximum Permitted Exposure (MPE) limit for devices
in the presence of the general public in the 100-300 MHz range is 0.2 mW/cm
2
= 2
W/m
2
.
The tables in the RF Energy Exposure Guide list the calculated lateral distances to be
maintained between the general public and an operational Wayside transmitter
antenna for two antenna types and gains and for both fixed and mobile applications.
The transmitter power is adjustable to accommodate the various installations of this
product. Once the authorized ERP, antenna gain and the losses from feed line,
connectors and any inline RF filters are known, the transmitter power must be
evaluated and if necessary, set to a value that will ensure that the authorized ERP
and RF exposure requirements are met. Example ERP calculations are provided
further below.
2.3 Antenna Guidelines
This section contains antenna information and additional notes regarding methods
to limit RF exposure.