RECEPTION SPOILERS

Radio Record, Volume I, Issue 21, 9 December 1927, Page 5

RECEPTION SPOILERS

HOME ELECTRIC DEVICES, There are many devices in the average home that may ruin the reception of the finest set on the market. A vacuum cleaner, au electric refrigeration plant, or any other general utility device within the house may not only ruin the reception in the lene where they are being used, but they may disturb the reception in the entire neighbourhood. ‘The interference may be louder at some house in the next block than it is at the place where the interference is being propagated. The making and breaking of a circuit in a motor, or moving parts in other devices cause small sparks which generate radio waves. ‘Iliis spark trans-

o mission, which has no definite wayelength, will use distant wiring as a form of antenna, and is very hard to tute out of any set, | Several manufacturers have put out appliances to eliminate the disturbance, or interference. The real solution, however, is to correct the trouble at its source. ‘This may be done by using high voltage condensers, shunted across the line and grounded at their midpoint.