Reducing Power-Line Interference

Radio Record, Volume III, Issue 32, 21 February 1930, Page 28

Reducing Power-Line Interference

HE following method of reducing power-line interference appeared in "Radio News" some time ago. It will no doubt interest some of our readers, though we do not know of anybody who has tried out the idea in New Zealand. | Mr. H. Morgan, of Los Angeles, California, says: "I have an aerial 60 feet high, with a vertical 5-wire cage 20 feet long, all enamelled. My aerial is within 100 yards of a 60,000-volt line;

so E had some trouble until I got two aluminium rings, 6 inches larger than the aerial, and hung one at the top and one near the bottom and grounded them. This improved matters so that I get good réception in the daytime. I got this idea from power engineers, who use this method near their transmission lines, and it might be of some help to those who live close to hightension lines." As the diagram shows, two earthed rings are suspended outside the vertical cage aerial, and the accompanying wires conduct away the induced high voltages. A ORS RE A AS EI A IE OE -- aE