All plants associated with power supply, such as high-voltage power lines and transformer stations, are regarded as LF radiation sources; transmission equipment on high-voltage masts can be HF radiation sources.
Power supply plants
Measure and record field strengths to establish proof of emission levels to customers and authorities.
16 2/3 Hz (railroad), 50 Hz, 60 Hz
Transmission installation on HF masts / towers
For transmission equipment on masts / towers, personal monitors are recommended.
30 MHz ... 5 GHz
Railway: Power Supply Plants
Prove safety for personnel, magnetic fields can interfere with safety or IT plants and systems.
16 2/3 Hz, 50 Hz, 60 Hz, 400 Hz (ships, aircraft)
Railway: Communication Systems
The railway's own communication systems have to be certified with appropriate HF measurement technology and checked regularly.
30 MHz ... 3 GHz