Bedienungsanleitung Cobra ESD7400 (Seite 8 von 10) (Englisch)

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Understanding Radar And Laser

Your Detector

Nothing Comes Close to a Cobra

Understanding Radar And Laser

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Radar Speed Monitoring Systems

Three (3) 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 (3) radar bands.

VG-2

VG-2 is a “detector detector” that works by detecting low-level signals

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

can be detected by VG-2, but does detect VG-2 signals and will alert you

when a device is in use near your vehicle.

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.

Understanding Radar And Laser

Your Detector

English

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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