Electrical interference with radio reception

In some localities radio reception is seriously disturbed by interference arising from electrical apparatus in the vicinity. Part of the disturbance from electrical devices is practically inevitable, and, like atmospheric disturbances, must be regarded as one of the inherent limitations of radio reception. Some electrical devices when in perfect working order cause disturbances of this kind, while others cause interference because of their faulty operation. The only general remedy for electrical interference is cooperative effort on the part of users of radio, users and owners of the electrical sources of disturbance, and distributers of electrical power, to reduce or eliminate the causes of the trouble. In many cases it is possible to provide filters, shelds, chokes, etc., either at the source of disturbance or at the receiving set, which do much to relieve the difficulties.