Whistler PRO-3450 - Manual (Page 13)

SPEED MONITORING TECHNOLOGIES
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, comp a re d
with a laser transmission which covers about 3 feet at the s a m e
distance. For best protection, keep these points in mind:
• 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.
Whistler Laser/Radar detectors receive all current laser g u n s
which operate at a laser wavelength of 905 +/- 10mm.
• Pro Laser™ I II III
• LT1 20-20 • Ultra Lyte
Other Speed Detection Systems
Several techniques other than radar or laser are used to
measure vehicle speeds. When these methods are being
used, no detector can provide a warning. These techniques include:
• Pacing - A patrol car drives behind you and matches your
driving speed.
• Vascar/Aircraft - The time it takes a vehicle to travel a
known distance is measured.
Radar Detector Detectors (VG-2) Spectre
The Interceptor VG-2, or simply VG-2, is one type of micro w a v e
receiver used by police to detect signals radiated by the local
oscillator of a radar detector. Because its purpose is to identify
persons driving with radar detectors, these devices are known
as a “radar detector detector”(RDD).
An RDD is the primary tool used by the police to identify radar
detector equipped vehicles. If caught, in a state or country where
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SPEED MONITORING TECHNOLOGIES
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Radar Facts
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 convert s this shift into miles per hour to
d e t e rmine your vehicle’s speed. Currently, the FCC (Federal
Communications Commission) permits operation of traffic
radar guns at X Band (10.500 - 10.550 GHz), K Band (24.050
- 24.250 GHz), and Ka Band (33.400 - 36.000 GHz).
NOTE: A radar detector will not alarm if an officer is not
transmitting on any one of the above radar bands.
POP ™ Mode
POP ™ Mode is a feature on some newer radar guns o p e r a t-
ing on K and Ka bands. When the gun is in POP ™ Mode and
activated, a brief burst of energy, less that 1/15 of a second,
is transmitted and the v e h i c l e ’s speed is quickly acquired. A
detector without POP
™ Mode detection capability cannot
respond to this brief transmission. This detector has the
power to re p o rt this new gun where other detectors cannot!
Total Band Protection ™
Complete Band Coverage that detects laser, radar, VG-2
and safety radar bands.
Laser Facts
I t ’s well documented that many radar guns cannot re l i a b l y p ro v i d e
the speed of a targeted vehicle that is traveling in a g ro u p
of vehicles. In contrast, a laser gun can target a specific v e h i c l e
out of a line of traffic and determine its speed. The a d v a n t a g e
of laser over radar in terms of target identification is the result
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