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How Radar Works
Traffic radar, which consists of microwaves,
travels in straight lines and is easily
reflected by objects such as cars, trucks,
even guardrails and overpasses. Radar
works by directing its microwave beam
down the road. As your vehicle travels into
range, the microwave beam bounces off
your car, and the radar antenna looks for
the reflections. Using the Doppler
Principle, the radar equipment then
calculates your speed by comparing the
frequency of the reflection of your car to
the original frequency of the beam sent out.
Traffic radar has limitations, the most
significant of these being that it typically
can monitor only one target at a time. If
there is more than one vehicle within
range, it is up to the radar operator to
decide which target is producing the
strongest reflection. Since the strength of
the reflection is affected by both the size of
the vehicle and its proximity to the
antenna, it is difficult for the radar operator
to determine if the signal is from a sports
car nearby or a semi-truck several hundred
feet away.
Radar range also depends on the
power of the radar equipment itself. The
strength of the radar unit's beam
diminishes with distance. The farther the
radar has to travel, the less energy it has for
speed detection.
Because intrusion alarms and motion
sensors often operate on the same
frequency as X-Band radar, your RX45 will
occasionally receive non-police radar
signals. Since these X-Band transmitters are
usually contained inside of a building, or
aimed toward the ground, they will
generally produce much weaker readings
than will a true radar encounter. As you
become familiar with the sources of these
pseudo alarms in your daily driving, they
will serve as confirmation that your RX45’s
radar detection abilities are fully
operational.
How Radar Works
Features and Specifications
Operating Bands
• X-band 10.525 GHz ±25 MHz
• Ku-band 13.450 GHz ±25 MHz
• K-band 24.150 GHz ±100 MHz
• Ka-band 34.700 GHz ±1300 MHz
• Laser 900nm, 33 MHz bandwidth
Radar Receiver / Detector Type
• Superheterodyne, GaAs FET VCO
• Scanning Frequency Discriminator
• Digital Signal Processing (DSP)
• 4-bit high-resolution A-to-D converter
Laser Detection
• Quantum Limited Video Receiver
• Multiple Laser Sensor Diodes
Display Type
• HP AlGaAs 280 LED Matrix/Text
• Bar Graph or ThreatDisplay™
• Automatic brightness control
Power Requirement
•
12VDC, Negative Ground
Programmable Features
• Power-On Indication
• Signal Strength Meter
• AutoMute
• Voice
• Bands
Sensitivity Control
• AutoScan™, Highway and Auto NoX
• Auto Calibration Circuitry
• Complete VG2 Immunity
Dimensions (Inches)
• Display/Controller
1.00 H x 2.00 W x 0.50 D
• Receiver Unit
5.40 x 3.70 x 1.05 inches
Patented Technology
Product is covered by one or more of the
following U.S. patents:
7,576,679 7,397,416 7,388,537 7,098,844
6,836,238 6,779,765 6,693,578 6,670,905
6,614,385 6,587,068 6,400,305 6,249,218
6,127,962 6,069,580 5,668,554 5,600,132
5,587,916 5,559,508 5,446,923 5,402,087
5,365,055 5,347,120 5,305,007 5,206,500
5,164,729 5,134,406 5,111,207 5,079,553
5,049,885 5,049,884 4,961,074 4,954,828
4,952,937 4,952,936 4,939,521 4,896,855
4,887,753 4,862,175 4,750,215 4,686,499
4,631,542 4,630,054 4,625,210 4,613,989
4,604,529 4,583,057 4,581,769 4,571,593
4,313,216 D314,178 D313,365 D310,167
D308,837 D296,771 D288,418 D253,752
Canadian patents:
2,381,585 2,337,077 2,330,964 1,295,715
1,295,714 1,187,602 1,187,586
European patents:
1,145,030 1,090,456
Other Patents Pending.
Specifications