February 15, 2012
Whatever their purpose – Illegal cannabis growers, hunters, poachers and any other trespassers may be detected remotely using Parabeam systems. There are several ways of approaching this problem and it mostly depends on the means of communication that will be required to be used to receive an alert.
If the track is significantly remote as to require an effort to send personnel to investigate, it may be a good idea to set up a two beam arrangement, with the second beam-set a further 30m or so along the track.
This will give additional verification that a vehicle or person is indeed travelling along the track because a second alert will be generated a short time after the first, making a trip to investigate more likely to be fruitful than if a single alert had been generated by a wandering deer or kangaroo say.
The two beam arrangement will also be able to tell the direction the vehicle is travelling by the order of the alerts received.
If the alert signal is required to be carried over a long distance and there is mobile phone coverage, then this is the obvious choice of communication. If there is no mobile phone coverage the only option is by radio link. If the signal needs to contend with dense bush or hills, then elevation, boost antennas and a signal repeater will be needed.
There are other options such as low frequency link. Low frequencies such as 27 MHz will travel through trees and obstacles very well but will require a long transmitting antenna in an elevated location.
Whatever radio link configuration is needed it will be solar powered and require a solar panel of between 4-20 watts depending on the hardware, as well as a sealed lead-acid storage battery in a polycarbonate outdoor housing.
Because requirements will vary on a case by case basis it is best to speak with one of our technicians who will be able to Google-Map the intended site and make recommendations based on this information.