Company Information

Head Office map
Active Communication Company Limited International House, Cray Avenue Orpington, Kent BR5 3RS
TEL: 0333 900 0101

Request a Call Back

To use CAPTCHA, you need Really Simple CAPTCHA plugin installed.

We respect your email privacy

Atmospheric Variables

Laser Link transmissions are affected by atmospheric conditions. To combat this, our units are fitted with, Automatic Transmit Power Control (ATPC) technology.

ATPC automatically adjusts optical power levels to ensure the remote terminal is operating effectively. A little like the choke on a motor vehicle, on a cold morning, more fuel is required to start the engine. ATPC technology monitors atmospheric variables and movements to mounting brackets to ensure the system is performing at an optimum level.


As you can see from the image above, atmospheric conditions have an effect on ‘line of sight’. Remember, Free Space Optic (FSO) technology requires a line of sight or the use of directional changing equipment to operate.

An example:

Unit without ATPC fitted


Unit with ATCP fitted


These results are taken from the Graphmanager system. They clearly show the effect of atmospheric conditions and bracket movement on units without ATCP technology. Drops in signal strength can result in packet loss and networking issues.

ACCL’s pledge is to bring Free Space Optic (FSO) technology to the UK’s capital. To carry out this task effectively we need to make sure all the units we install, operate at the optimum level, regardless of atmospheric conditions or movements to mounting brackets. By utilising ATPC technology we are confident our vision will be met.

As the popularity and understanding of laser technology grows, more organisations will start to see the true benefit.

If you would like to discuss ATPC technology, simply call our Support Team on 0333 900 0101. A member of staff will be happy to answer your questions.