VI. SPEED MONITORING DEVICES
Radar speed gun
A radar gun operates by transmitting radio waves at certain frequencies which reflect off
objects and are then picked up by the radar gun’s receiving section. When a radar beam
reflects off a moving target, a measurable frequency shift occurs. The radar unit converts
this shift into miles per hour to determine your vehicle’s speed.
Laser speed gun
It’s well documented that many radar guns cannot reliably provide the speed of a targeted
vehicle that is traveling in a group of vehicles. In contrast, a laser gun can target a
specific vehicle out of a line of traffic and determine its speed.
The advantage of laser over radar in terms of target identification is the result of the laser
gun’s narrow beam. A radar transmission can cover more than a four-lane highway at a
distance of 1,000 feet, compared with a laser transmission which covers about 6 feet at
the same distance.
For best protection, keep these points in mind:
• Because your vehicle’s license plate or headlights are the laser gun’s primary targets,
mounting your detector on the dashboard can improve laser detection at short range.
• Do not follow closely behind any vehicle you cannot see through. If you can’t see past a
vehicle ahead of you, chances are your detector won’t either.
• The receiving range of your laser detector will not be the
same as a radar detector. Laser guns are most often used at
short range
VII. MAINTENANCE
Care And Maintenance
During the summer months, avoid prolonged exposure to direct sunlight by removing your
unit from the dash when your vehicle is parked for an extended period of time.
Do not spray water, cleaners or polishes directly onto the unit. The spray may penetrate
through the openings and damage the unit. Also, do not use any abrasive cleaners on the
unit’s exterior.
Fuse Replacement
The lighter socket plug is equipped with a replaceable 2 amp 3AG fuse located behind the
silver tip. To replace the fuse, carefully unscrew the tip of the plug. (IMPORTANT: Unscrew
slowly. The tip contains a spring which may fly out when disassembling.) Insert the new
fuse with the spring and screw on the tip.
With use, cap on plug may loosen. Retighten occasionally.
