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Understanding Radar and Laser

Intro Operation Customer

ssistance

Warranty

otice

Secondary Icons

our Detector

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Understanding Radar and Laser

Intro Operation Customer

ssistance

Warranty

otice

Secondary Icons

our Detector

English

Understanding Radar and Laser

•

Radar Speed Monitoring Systems

Three band frequencies have been approved by the Federal Communications

Commission (FCC) for use by speed monitoring radar equipment:

X band 10.525 GHz

K band 24.150 GHz

Ka band 33.400 – 36.00 GHz

Your detector detects signals in all three radar bands.

VG-2 and Spectre 1

VG-2 and Spectre 1 are “detector detectors” that work by detecting low-level

signals emitted by most radar detectors. Your detector does not emit signals

that can be detected by VG-2 or Spectre 1, but does detect VG-2 and Spectre 1

signals and will alert you when a device is in use near your vehicle, if you

so choose.

Safety Alert Traffic Warning System

FCC-approved Safety Alert transmitters emit microwave radar signals that

indicate the presence of a safety-related concern. Depending on the frequency

of the signal emitted, it can indicate a speeding emergency vehicle or train,

or a stationary road hazard.

Because these microwave signals are within the K band frequency, most

conventional radar detectors will detect Safety Alert signals as standard

K band radar. Your detector, however, is designed to differentiate between

standard K band and Safety Alert signals, and give separate alerts for each.

Safety Alert technology is relatively new. Safety Alert transmitters can

be found in limited numbers in all 50 states, but the number is growing.

Depending on your location, you may not receive these alerts regularly

and may often encounter emergency vehicles, trains and road hazards

without being alerted. As the number of transmitters increases,

these alerts will become more common.

When you receive such an alert, please watch for emergency vehicles ahead

of you, on cross streets and behind you. If you see an emergency vehicle

approaching, please pull over to the right side of the road and allow it to pass.

Strobe Alert

Special strobes mounted on the light bars of authorized emergency

vehicles (fire trucks, police cars, ambulances) automatically change traffic

signals as the vehicle approaches an intersection. These strobes and the

special strobe detectors located on the traffic signals, introduced fairly

recently by 3M and Tomar, are already in use in more than 1000 cities

nationwide. Cobra’s exclusive

Strobe Alert detector will detect these

special strobes and give an emergency vehicle alert.

When you receive such an alert, please watch for an approaching

emergency vehicle and pull over to allow it to pass. To inquire about

coverage in your area, contact your local fire and police departments.

LIDAR (Laser)

The correct name for the technology that most people refer to as

laser is actually

LIDAR, which stands for Light Detection and Ranging.

LIDAR operates much like radar. Its signal spreads out like a radar

signal, though not as widely. Unlike radar, LIDAR must have a clear

line of sight to its target vehicle throughout the entire measurement

interval. Obstructions such as sign posts, utility poles, tree branches,

etc., will prevent valid speed measurement.

Some common questions about LIDAR include:

■

Does weather have any affect on LIDAR?

Yes. Rain, snow, smoke, fog, or airborne dust particles will reduce the

effective range of LIDAR and can, if dense enough, prevent its operation.

■

Can LIDAR operate through glass?

Yes. Newer LIDAR guns can obtain readings through most types of glass.

However, the laser pulse also can be received through glass to trigger

an alarm by your detector.

■

Can LIDAR operate while in motion?

No. Because LIDAR operates by line of sight, the person using it cannot

drive the vehicle, aim and operate the gun all at the same time.

■

Is LIDAR legal to use?

Yes. It is legal in all 50 states.

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