A RADIO “SLEUTH”

Shannon News, 6 December 1927, Page 2

A RADIO “SLEUTH”

The latest addition to the twentieth century wonder (states the Radio Record) is a van, like an undersized Black Maria, with a circular frame aei’ial on the roqf. It is used as a post office sleuth in tracking down wireless oscillators. A hand on an innocent looking- dial inside the van is able to point with unerring certainty to the actual house in which the mysterious annoying oscillator resides after which the officers enter, add gentle persuasion and expert guidance follow. It is truly an ingenious system. Bearings ar e taken on three sides of an area visited and plotted down on a lax-go scale map. If the lines intersect each othei\ the location of the oscillator is known, and the van proceeds immediately to the indicated direction. As tlx e house is approached the oscillations become gradually fainter, - till zero point is reached when the van gets immediately before the house.