ADEMO lightning detection system, by INEO, uses an HF receiver that analyses radio
waves from lightning bolts of cloud to cloud and cloud to ground lightning in a radius
of 10 to 15 km during a storm.
Lightning consists of three or four quick successive high amplitude and high frequency
electrical discharges. These strokes are known as return strokes. The electrical radio
signal produced by these strokes is processed by ADEMO’s recording and alarm unit.
It then displays real time lightning and storm intensity on a galvanometer and three LED’s.
ADEMO’s alarm is set off when a preset alarm threshold is reached. A set of contacts are
provided for an external alarm (not included).