WIRELESS MUSIC

Dominion, Volume 12, Issue 12, 5 September 1919, Page 8

WIRELESS MUSIC

Tho Royal Air Force Communication Squadron, 'at ICenley, have been doing great things with tho wireless telephone, says the "Daily Midi." They now propose to transmit musical interludes to the "flippers" on the London-Pari6 route. This may sound impossible, but really it is quito simple. All you have to do is to place a gramophone against the wireless. transmitter and start the record '"revving" in the usual fashion, and the ether is flooded with Hertzian waves of music. Of course you can't hear them—your oar will not respond to other waves; but thore is a wireless receiver iu the machine which receives these Hertzian waves and reconverts them into pressure waves and which impinge on the diaphragm of the • ear. Hence .tlio aerial traveller is beguiled by. tho Bfcrains of tlio gramophone, ten, twenty or fifty miles away. ' , . But look at its possibilities! A wireless telephone transmitter suitably arranged at the Albert Hall. would flood London with "inaudible' music. For it to N become audible all you would require is a simple wireless telephone receiver and a small aerial from the top of your house. Then you could sit in comfort at 'homo and listen to a symphony concert or a Covent Garden opera. The wireless telephone.requires; no intermediate wiring-tho receiver, which only weighs about 10lb., can be carried about liko a portable typewriter, its amplification is 6ucji that the ear-pieces can lio laid on the table and yet t'ho sounds can be heard all over the room; and, moreover, it requires :no "exchange" to operato it. This latter point is of enormous advantage. The music- "empGriunis" need onlv transmit on different wave-lengths— Albert Hall, 6ay, GOO metres; Queen's Hull, 050 metres; Covent Garden, 700 metres—and there would, be absolutely no jamming. You give a turn to your inductanco handle and immediately you r.ro listening to a concert at tho Albert Hull; you give another turn to your inductance, and pei'haps switch another condenser into circuit, and. you thrill to tho.strains of a grand organ,recital at tho Aeolian Hall; anotlior turn, and "Madame Butterfly" almost persuades you that you aro sitting in tho stalls at Covent Garden.

This is not iiction—it is fact. Tliu tclopliono rcceivor is quite _ a simplo thing, and a dry battery (jiving 00 volts, with three 2-volt accumulators, ivould run the ivholo "box of tricks."