Operator's Manual

3
MAXIMUM PERMISSIBLE EXPOSURE (MPE) LIMITS
RADIO OPERATOR WARNING
Do not transmit with this radio and antenna when persons are within the
MPE Radius of the antenna, unless such persons (vehicle occupants or
bystanders, for example) are shielded from the antenna field by a grounded
metallic barrier (such as the user’s vehicle rooftop). The MPE Radius is the
minimum distance from the antenna axis that ALL persons should maintain in
order to avoid RF exposure higher than the allowable MPE level set by the
FCC.
FAILURE TO OBSERVE THESE LIMITS MAY ALLOW
THOSE WITHIN THE MPE RADIUS TO EXPERIENCE RF
RADIATION ABSORPTION WHICH EXCEEDS THE FCC
MAXIMUM PERMISSIBLE EXPOSURE (MPE) LIMIT. IT IS
THE RESPONSIBILITY OF THE RADIO OPERATOR TO
ENSURE THAT THE MAXIMUM PERMISSIBLE
EXPOSURE LIMITS ARE OBSERVED AT ALL TIMES
DURING RADIO TRANSMISSION. THE RADIO OPERATOR IS TO
ENSURE THAT NO BYSTANDERS COME WITHIN THE RADIUS OF
THE MAXIMUM PERMISSIBLE EXPOSURE LIMITS SHOWN BELOW.
Determining MPE Radius
THE MAXIMUM PERMISSIBLE EXPOSURE RADIUS HAS BEEN
ESTIMATED TO BE A RADIUS OF ABOUT 55 INCHES (OR 138 CM) FOR
THE VEHICULAR MOUNTED ANTENNA SYSTEMS, AND 77 INCHES (OR
195 CM) FOR BASE STATION MOUNTED ANTENNA SYSTEMS PER OET
BULLETIN 65 OF THE FCC. THIS ESTIMATE IS MADE USING THE
MAXIMUM CAPABLE POWER OF THE RADIO, ANTENNAS WITH A
MAXIMUM GAIN OF 3 dBd (FOR VEHICULAR MOUNTED SYSTEMS) OR
6 dBd (FOR BASE STATION SYSTEMS), AND A MAXIMUM 50%
TRANSMIT DUTY CYCLE (DUE TO THE PUSH-TO-TALK STATUS OF
THIS MOBILE).