The Archive · 1933

INTERFERENCE

Playing around with a short-wave radio set and trying to listen to european stations—this can bet markably, successful at periods de-Ispite the generally bad condition of the atmosphere at present—it is Jannoying to come across harmonies Jof local' stations. Experience soon reaches the listener the difference between a harmonic snd a true short wave, but there is often a background which seems unnecessary. Further up the scale, towards the mediumevave brondeast, bend, it lis possible in Shanghai to listen to strong harmonic of a local sta tion, almost as true as ils proper wave, and atthe same time to. listen tothe Shanghai Municipal Police radio station, XSMP, when comes on the air. Here, again, tole-graphic interference is sometimes Superimposed, This leads to a wonder that the police radio vans do not sometimes fail to receive mes lsages at all, To revert to short waves, it seems that listen! to stations on this band is becom-inge popular in Shanghai, to judge loy the frequent whistling caused by ch-amoy taming of sets in the vich ity. Reception is increasingly dis. turbed by this, and it is hoped that purchasers of short-wave sets, lof which there are more than one onthe market now, will be shown now to bande them with a minijmusm of disturbance to other. listen-

Srupeixe News note about it for surely it is always affinity with the amiable aspirations that the situation round Foochow is &S-

Text read from the printed page and cleaned; old type leaves the occasional error.

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