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.