Is there a broadcast reception interference if energy saving bulb are used?
These lamps are discharge lamps with an electronic pre-switch system which operates with an operating frequency between 30 und 45 kHz depending on type of lamp. With it also higher frequency upper wave lengths are produced that are being dampened by transmitter non-interference filters so that the issued legally prescribed border values and cable associated interferences are in no way exceeded. These prescriptions are laid down in DIN VDE 0875 Part 2 resp. CISPR 15. The low residual transmission can, however, bring about interferences, if the reception aerial is in the proximity of the lamp (for example, with a distance of less than 1 to 3 metres for long wave). Similar interferences will occur, for example, with computers and other gadgets used in households and offices that have switching components.