A Curious "Fault."

Radio Record, Volume II, Issue 27, 18 January 1929, Page 23

A Curious "Fault."

A TROUBLHE which often puzzles the non-technical listener very much is when the set, after working perfectly, suddenly "goes off," speech becoming very indistinct and "far away," whilst music practically vanishes. After a short time, perhaps no more than a few minutes, the set will go back to normal, for no apparent reason. The trouble then may not occur again that evening or perhaps for seyeral evenings, when, without any warning, the same thing happens. If this happens to your set, try switching in to another station on a different wavelength. If the trouble is the one we are discussing, you will find that the alternacive station comes in perfectly, and probably by the time you switch back to the original station that also will be coming in in the normal way. If you have, in the meantime, in searching for the trouble in the set itself, made a. vy alterations or adjustments, it is as well to put things back as they were and see whether the set then behaves .as I have indicated above. , Interference. go, it is practically certain that the trouble is not due to the set at all, but to interference by a wet somewhere in the immediate neighbourhood. The type of oscillator who causes howls and wailin. .. comparatively easy to discover, hut there is a kind of oscillation which is not evident by ar nois:s of tha: kind, and, when the o..cillator switche" on, his set may be oscillating steadily und causing interference all round without the fact being known event himself. If, therefore, you find your set afflicted with thec2 sudden and mysterious fits of "going off," you may be pretty certain that the cause of the trouble is to be looked for a little further afield. ,