User's Manual
Design Principles of a M/LC Repeater Network
February 2004 9
2.4 FCC Statements
MANDATORY SAFETY INSTRUCTIONS TO INSTALLERS AND USERS
1. Use only antennas supplied by Modular Mining Systems or dealer.
2. Antenna Minimum Safe Distance: 20 cm.
3. Antenna Gain: Zero dBd referenced to a dipole.
The Federal Communications Commission has adopted a safety standard for human exposure to RF
(radio frequency) energy which is below the OSHA (Occupational Safety and Health Act) limits.
Antenna Mounting
The antenna supplied by Modular Mining Systems or dealer must not be mounted at a location such that
during radio transmission, any person or persons can come closer than the above minimum safe distance
to the antenna, i.e. 20 cm.
To comply with current FCC RF exposure limits, the antenna must be installed at or exceeding the
minimum safe distance shown above, and in accordance with the requirements of Modular Mining
Systems.
Base Station
Installation
The antenna should be fixed-mounted on an outdoor permanent structure. RF
exposure compliance must be addressed at the time of installation.
Mobile Repeater
Installation
The antenna must be mounted on a mast that is 12 feet or higher so that RF
exposure compliance is satisfied.
Mine Vehicle
Installation
The antenna should be fixed-mounted on the vehicle facing away from the
vehicle such that a person is not able to move in front of the antenna. RF
exposure compliance must be addressed at the time of installation.
Antenna Substitution
Do not substitute any antenna for the one supplied or recommended by Modular Mining Systems. You
may be exposing person or persons to harmful radio frequency radiation. You may contact Modular
Mining Systems for further instructions.
WARNING: Maintain a separation distance from the antenna to person(s) of at least 20 cm.
You, as the qualified end-user of this radio device, must control the exposure conditions of bystanders to
ensure the minimum separation distance (above) is maintained between the antenna and nearby persons
for satisfying RF Exposure compliance. The operation of this transmitter must satisfy the requirements of
Occupational / Controlled Exposure Environment, for work-related use. Transmit only when person(s) are
a least the minimum distance from the properly installed, externally mounted antenna.
Changes or Modifications
CAUTION: changes or modifications not expressly approved by Modular Mining Systems could void
the user's authority to operate the equipment.