User Manual

Harmonic detection

In moving mode, the BEE III receives a large reflection from the road, which is used to compute

the patrol speed. Some situations, such as when guardrails or large signs are present, cause the

signal to be excessively large. This can sometimes cause a harmonic frequency of twice the patrol

speed to appear. These signals would normally be displayed as a target with a speed equal to the

patrol speed and prevent the BEE III from reading the speed of real targets, but harmonic detection

circuitry inside the BEE III inhibits this. Unfortunately, the harmonic detection circuitry also may

reduce the range of actual target vehicles that are moving at the same speed as the patrol vehicle.

This is normal and can be avoided by patrolling at a different speed than the offending targets.

Range and radar placement

The range of the radar is influenced by how it is mounted in the vehicle. Heater fans are moving

targets and will be picked up if energy from the antenna is reflected toward the fan. The best

solution to this problem is to find a location that minimizes this effect. To determine this location,

place the unit in stationary mode, turn the volume up, and open the squelch. This lets any target or

interference be heard. If changing fan speeds changes the audio signal, the fan is being picked up

in that mounting position; try to find a different location. Reducing the fan speed may also reduce

the problem. Reducing the range setting of the radar will also reduce the problem. If you have

persistent problems with the BEE III reading the fan speed, call the factory for suggestions specific

to your particular vehicle.

Power Source

Cigarette lighter receptacles have been the traditional source of power for traffic radar. However,

poor grounding, electronic ignition bleed over, and alternator noise in newer cars can combine to

create an unacceptably high level of ambient electronic interference. In some instances, an

unusually noisy vehicle ignition/alternator noise can result in false readings and/or reduce the range

of the BEE III.

To combat this, it is recommended that a shielded cable be run from the battery directly to an

auxiliary receptacle installed under the dash or on the console. This should effectively eliminate

any power source problems.

Fuse Replacement

BEE IIIs are shipped with a fused cigarette lighter plug. The fuse is housed inside the tip of the

plug. (See arrow in below illustration.) To remove fuse: unscrew and remove the tip and the fuse.

Replacement fuses should be commonly available 2 Amp, AGC type fuses. Substitutions are not

recommended and may violate the BEE III's warranty.