LONG DISTANCE ON CRYSTAL

Radio Record, Volume I, Issue 25, 6 January 1928, Page 12

LONG DISTANCE ON CRYSTAL

' "NOT DUE TO RADIATION | ee Crystal users will be interested in the following from London radio journal:-The coming of the new Daventry experimental station, 5GB, has had:one very unexpected effect-it has revived interest in the possibilities of long-distance reception with a crystal set.: Manv a listener, who has tuned his set to try and hear the alternative programmes provided by Daventry experimental, has astonished himself by picking up a foreign programme, instead!: Langenburg, whose wavelength happeijs to be near that of 5GB was picked) up at such strength by one Essex: listener that it was assumed to be Daventry experimental until the announcer said a few kind words in unmistakable German! RERADIATION RULED OUT: If‘ anyone tells you that such results can ‘always be explained by reradiation from a valve set, "don’t believe him. It is tommy--ot to say that crystal sets cannot pick up a foreign station unless a near-by valve set, tuned to that station, is helping. Why, some lucky crystal-set owners, situated in exceptionally favourable conditions, can actually tune in more than one foreign station, almost any night they choose! Why this is so is a bit of a mystery, for people living near and using similar sets may be quite unable to duplicate the performance. Yet so many instances of non re-radiated reception are authenticated that the "Can’t-be-done" bogey, has been killed, and buried far beyond the resurrection point. Langenburg is 325 miles from Essex, and rated at 25 kilowatts.)