LRAD 500X - Operation - Hailing and Warning; Hearing Protection Required; Protection of Nearby Personnel

LRAD 500X
15
WARNING: The Tone Generator produces the loudest output from the LRAD-500X.
Qualified personnel must ensure the area in front of the LRAD-500X is clear for 75 meters in
front of the device before activating the tone at high volume levels.
The MP3 Player has an Alarm Tone generator button located on the side. Press once for
activation; press again for deactivation. The tone generator produces intense, pulsating
warning tones.
ATC recommends using the tone in 2-5 second bursts for maximum effectiveness when hailing a
subject. The tone will override the recorded voice transmission.
Brightness Control:
The brightness button on the face of the MP3 player can be used to set the brightness of the
LCD backlight to compensate for ambient lighting conditions. The button cycles the LCD
backlight from off (no backlight) through three increasing levels of brightness.
Other MP3 Player Functions:
Please see the LRAD MP3 Player Operating Manual for other functions and features of the MP3
player.
Operation – Hailing and Warning
HEARING PROTECTION REQUIRED: Personnel operating the LRAD-500X shall, at a
minimum, wear single earplug style hearing protection. The LRAD-500X is capable of
acoustic sound pressure levels in excess of OSHA noise hazard levels. As with any high-
energy acoustic device, proper usage will minimize risk of hearing loss to the operator
and personnel in the immediate vicinity.
PROTECTION OF NEARBY PERSONNEL: Qualified LRAD-500X operators must
ensure the device is positioned, aimed and operated in a manner so as to avoid
exposing nearby personnel and bystanders to excessive sound pressure levels. The
following guidelines are to be used in conjunction with sound judgment:
• Never operate LRAD-500X at maximum power where personnel may be within
75 meters or where an acoustically reflective object, e.g. building, wall, or
bulkhead, is located such that the reflected distance to personnel is less than 75
meters.
• Never point LRAD-500X directly at personnel in the immediate vicinity of
operating position.
• Be advised that the output power of the warning tone is slightly higher than
voice levels.
Many factors must be considered when positioning the LRAD-500X for hailing and warning
operations. The LRAD-500X Operations Zones shown in Figure 3 must always be taken into
account to ensure that personnel are not exposed to excessive sound pressure levels.