RCA MRM400 Instruction Manual page 5

For watercraft without suitable structures, the
antenna must be mounted so as to maintain a
minimum of 3 feet (1 meter) vertically between
the antenna, (measured from the lowest point
of the antenna), to the heads of all persons AND
all persons must stay outside of the 10 foot (3
meter) MPE radius.
Do not transmit with radio and antenna when
persons are within the MPE radius of the
antenna, unless such persons (such as driver or
radio operator) are shielded from antenna field
by a grounded metallic barrier. The MPE Radius
is the minimum distance from the antenna axis
that person should maintain in order to avoid
RF exposure higher than the allowable MPE
level set by FCC.
FAILURE TO OBSERVE THESE LIMITS MAY
ALLOW THOSE WITHIN THE MPE RADIUS TO
EXPERIENCE RF RADIATION ABSORPTION
WHICH EXCEEDS THE FCC MAXIMUM
MRM400 VHF Marine Two-Way Radio Instruction Manual
TM
Copyright © 2015 RCA Communications Systems
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.
Determining MPE Radius
THE MAXIMUM PERMISSIBLE EXPOSURE
(MPE) RADIUS HAS BEEN ESTIMATED TO
BE A RADIUS OF ABOUT 10 FEET (3M) PER
OET BULLETIN 65 OF THE FCC.
THIS ESTIMATE IS MADE ASSUMING THE
MAXIMUM POWER OF THE RADIO AND
ANTENNAS WITH A MAXIMUM GAIN OF
9dBi ARE USED FOR A SHIP MOUNTED
SYSTEM.
5