Detection
19
Radar Frequencies
There are now three frequencies that have been
approved by the FCC (Federal Communications
Commission) for use in speed monitoring
equipment. They are:
X Band (10.525 GHz),K Band (24.150 GHz)
Ka Band (33.400-36.000 GHz)
Your Cobra ESD-9000 can detect signals in all
three radar bands including photo radar and
STALKER radar which use the Ka band, and
Cobra’s Safety Alert signals on the K band.
Facts About LIDAR (Laser)
What is LIDAR?
LIDAR stands for Light Detection And Ranging.
While everyone refers to it as LASER the correct
name is LIDAR.
How does LIDAR work?
LIDAR operates a lot like RADAR.Like RADAR,it
spreads out. Not as quickly, but it does spread, as
shown on the diagram below.
Radar
Frequencies
Facts About
LIDAR (Laser)
Detection
18
LIDARs must have a clear
line of sight to target a
vehicle during the entire
measurement interval.
Intervening objects such as
signposts, utility poles, tree
branches, etc.,will prevent
a valid speed reading.
Maintenance
Facts About
LIDAR (Laser)
Does weather have any effect on LIDAR?
Yes, rain,snow, smoke, fog, and airborne dust
particles will all reduce the effective range, and
if sufficiently dense, may prevent its operation.
Can LIDAR operate through glass?
No, LIDAR guns cannot obtain readings through
any glass. But the laser pulse can be received
through glass to easily and quickly trigger a laser
detector's alarm.
Can LIDAR operate while moving?
No, since LIDAR is line of sight, an officer cannot
drive, aim,and shoot while driving.
Is a LIDAR DETECTOR legal to use?
Yes, it is legal in all 50 states.
Maintenance
Your COBRA ESD-9000 RADAR/LASER DETECTOR
will give you years of trouble-free service with
minimum maintenance.
Replacing Power Cord Fuse
Unscrew cap of cigarette lighter adapter and
remove fuse. Replace with 1-ampere fuse only.
Troubleshooting
If your COBRA LASER DETECTOR ESD-9000 isn’t
operating, we suggest you make the following
checks:
1. Is the power cord properly connected?
2. Is the fuse OK?
3. Is the cigarette lighter socket clean and free
from corrosion?
9000.MANUAL 8/9/00 12:10 PM Page 18
