Operational Warnings; Potentially Explosive Atmospheres; Blasting Caps And Areas - Motorola GM300 Series Basic Service Manual

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The table below lists the minimum distance for several different ranges of rated radio power.
Rated Power of Vehicle-Installed
7 to 15 Watts
16 to 50 Watts
More than 50 Watts
Mobile Antenna Installation
Install the vehicle antenna external to the vehicle and in accordance with:
a. The requirements of the antenna manufacturer/supplier
b. Instructions in the radio installation manual.
Control Station Operation
When radio equipment is used to operate as a control station, it is important that the antenna be
installed outside the building and away from places where people may be in close proximity.
NOTE Refer to Table 1 for rated power and minimum distance values for transmitting
antennas.

OPERATIONAL WARNINGS

Potentially explosive atmospheres

WARNING: Turn off your Two-Way radio when you are in any area with a potentially explosive
!
atmosphere, unless it is a radio type especially qualified for use in such areas. Sparks in a
potentially explosive atmosphere can cause an explosion or fire resulting in bodily injury or
even death.

Blasting caps and areas

WARNING: To avoid possible interference with blasting operations, turn off your radio when
!
you are near electrical blasting caps. In a "blasting area" or in areas posted "turn off two-
way radio", obey all signs and instructions.
NOTE The areas with potentially explosive atmospheres referred to above include fuelling areas
such as: below decks on boats; fuel or chemical transfer or storage facilities; areas where
the air contains chemicals or particles, such as grain, dust or metal powders; and any other
area where you would normally be advised to turn off your vehicle engine. Areas with
potentially explosive atmospheres are often but not always posted.
Table 1 Rated Power and Distance
Mobile Two-Way Radio
Minimum Distance from
Transmitting Antenna
30.5 cm (1 Foot)
61 cm (2 Feet)
91.5 cm (3 Feet)