Rocky Mountain Radar RMR-8RDS - Manual (Page 11)

The radar scrambling circuit mixes a Doppler FM chirp with the
incoming police radar signal and reflects it back to the radar
gun. The computer in the radar gun must receive eight identical,
consecutive readings before it will display your speed. All the
different speeds contained in the FM chirp confuse the
computer in the radar gun so it does not display any speed. This
effect duplicates the normal operation that the officer usually
sees.
Since it is normal to occasionally lose the target speed, the
officer is not suspicious. Reasonable care should be used as
flagrant violators could still be caught with an estimated speed.
The laser scrambling circuit transmits a series of pulses at the
same wavelength used by the police laser guns (Lidar), which
are electronically timed at about 100 feet apart. When the pulses
pass through the windshield they will lose up to 50% of their
power. The power output is four to eight times that needed to
trigger the detector in the laser gun.
Lidar sends out laser pulses and measures how long it takes to
hit your car and come back. From the speed of light it can
determine your range. It sends out several more pulses and
calculates your speed from the change in distance over time.
The Rocky Mountain Radar scramblers only allow the Lidar to
see up to 100 feet so it is unable to calculate your speed.
SCRAMBLER OPERATION:
Drive normally. When the detector sounds an alert, take your
foot off the gas, check your speed, adjust if necessary, and
resume driving. Do not apply brakes unless you are grossly
exceeding the speed limit. The scrambler will disable the radar
long enough for you to adjust speed safely, if necessary.
Rocky Mountain Radar does not condone the use
of excessive speed on the highways, nor does it
endorse breaking the speed limit laws of the
United States of America. Please drive safely when
using this or any other electronic product in your
car.
IS IT LEGAL?
The Rocky Mountain Radar scramblers conform to all FCC
rules and regulations. Part 15 of the FCC code regulates
consumer products that may leak or transmit radio frequency
energy into the atmosphere. Since the scramblers are not
transmitters, these sections do not apply.
11
The radar scrambler is a reflective receiver and has no
emissions. It does not transmit, but uses the police radar gun’s
own signal as a carrier of its information.
The laser scrambler transmits a series of light pulses. There are
no laws regarding the transmission of invisible light.