Speed monitoring, Warranty information – Whistler XTR-440 User Manual
Page 8
Laser Facts
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 gun’s transmission can
cover more than a four-lane highway at a distance
of 1,000 feet, compared with a laser gun’s
transmission which covers about 3 feet at the
same distance. For best protection, keep these
points in mind:
• Because the vehicle’s license plate or
headlights are the laser gun’s primary targets,
mounting the Whistler detector on the
dashboard can improve laser detection at
short range.
• Do not follow closely behind any vehicle. If you
can’t see past a vehicle ahead of you, chances
are your detector won’t either.
• The receiving range of laser signals will
not be the same as radar signals. Laser
guns are most often used at short range.
Whistler Laser-Radar detectors receive all current
laser guns which operate at a laser wavelength of 905
+/- 10mm.
•Pro Laser
™
I II III •LT1 20-20 •Ultra Lyte
SPEED MONITORING
20
Laser Tips
If you are the targeted vehicle, a laser gun can
often determine your speed within a few
seconds after you receive an alert. In this
situation, there is generally no time to safely
adjust your speed. However, if you are traveling
near or behind the targeted vehicle, and receive
an alert, response time should be sufficient. Any
laser alert, regardless of duration, requires
immediate action!
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:
• P
Pa
acciin
ng
g - A patrol car drives behind you and
matches your driving speed.
• V
Va
asscca
arr//A
Aiirrccrra
afftt - 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
microwave 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 detectors are illegal (see
page 18), drivers risk losing their radar detector and
receiving a fine. In addition, instant-on radar is
almost always used in combination with an RDD,
leaving unsuspecting motorists vulnerable to receive
two tickets - one potentially for speeding, the other
for possession of a detector.
SPEED MONITORING
N
No
otte
e:: H
Ha
avviin
ng
g a
a rra
ad
da
arr d
de
ette
ecctto
orr cca
ap
pa
ab
blle
e o
off
d
de
ette
eccttiin
ng
g tth
he
e V
VG
G--2
2 m
ma
ayy a
alle
errtt yyo
ou
u tto
o tth
he
e
p
prre
esse
en
ncce
e o
off a
a ssp
pe
ee
ed
d ttrra
ap
p.. T
Th
he
e n
ne
ew
we
esstt tto
oo
oll
P
Po
olliicce
e h
ha
avve
e tto
o d
de
ette
ecctt rra
ad
da
arr d
de
ette
ecctto
orrss iiss cca
alllle
ed
d
S
Sp
pe
eccttrre
e.. A
Ass o
off tth
hiiss p
prriin
nttiin
ng
g.. S
Sp
pe
eccttrre
e cca
an
n d
de
ette
ecctt
tth
he
e m
ma
ajjo
orriittyy o
off u
un
nd
de
ette
ecctta
ab
blle
e ((V
VG
G--2
2)) lla
asse
err//rra
ad
da
arr
d
de
ette
ecctto
orrss o
on
n tth
he
e m
ma
arrkke
ett..
It is the responsibility of the radar detector user to
know and understand the laws in your area
regarding the legality of the use of radar detectors.
WARRANTY INFORMATION
Consumer Warranty
This Whistler Laser-Radar detector is warranted
to the original purchaser for a period of one year
from the date of original purchase against all
defects in materials and workmanship. This
limited warranty is void if the unit is abused,
modified, installed improperly, or if the housing
and/or serial numbers have been removed. There are
no express warranties covering this product other
than those set forth in this warranty. All express or
implied warranties for this product are limited to the
above time. Whistler is not liable for damages
arising from the use, misuse, or operation of this
product.
N
No
otte
e:: Damaged caused by incorrect battery
placement or battery leakage is not covered
under this warranty.
SPEED MONITORING
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