Haven power lines always radiated radio energy and caused interference?
Previous to BPL, power lines have had a history of radiating noise, but properly maintained lines will radiate only a minute amount of radio energy that is low enough that it does not impact radio communications. On the other hand, a properly maintained BPL system will radiate radio energy. A distinction between power transmission noise and BPL noise needs to made, and is very important to understanding this issue. Power transmission noise is a product of 60 hertz voltage and is a rough, raspy frying type of noise that is stronger at low frequencies and gradually tapers off. Two types of BPL noise exist. One is results from Spread Spectrum modulation which is a Geiger counter type noise. The other type of BPL noise typically observed is resulting from OFDM modulation. This creates carriers, or little “radio blips” every 1 kilohertz or so across the radio spectrum. Each “blip” has a ringing sound or clicking sound.
Previous to BPL, power lines have had a history of radiating noise, but properly maintained lines will radiate only a minute amount of radio energy that is low enough that it does not impact radio communications. On the other hand, a properly maintained BPL system will radiate radio energy. A distinction between power transmission noise and BPL noise needs to made, and is very important to understanding this issue. Power transmission noise is a product of 60 hertz voltage and is a rough, raspy frying type of noise that is stronger at low frequencies and gradually tapers off. Two types of BPL noise exist. One is results from Spread Spectrum modulation which is a Geiger counter type noise. The other type of BPL noise typically observed is resulting from OFDM modulation. This creates carriers, or little radio blips every 1 kilohertz or so across the radio spectrum. Each blip has a ringing sound or clicking sound. Power transmission noise can most always be fixed by changing out worn or de
