TRANS-ATLANTIC WIRELESS

Otago Daily Times, Issue 19200, 17 June 1924, Page 7

TRANS-ATLANTIC WIRELESS

THE BEAM SYSTEM. HIGH POWER STATIONS UNNECESSARY. DIRECT TRANSMISSION ACHIEVED. Press Association —By Telegraph—Copyright. BEUNOS AIRES, June 15. The trnnsradio international officials announce that the radio Deam ray communication 4 between Poldhu Station, Cornwall,. England, and Beunos Aires was* radio telegraphic, and not teleplrouic, as reported from London. The message was received after a successful tost which Mr Marconi conducted for two days with a local station on a wave length of 94 metres. The officials assert that success over such a long distance means that high-power stations will no longer be necessary for radio communication. They expect soon that all the stations of tho four big allied international companies will be equipped with radio reflectors, which arc essential to the beam ray system, so that each may communicate with any of the others directly and exclusively. Tho receiving apparatus here is of special construction, having three lamps with small cylindrical antennas. The distance from Poldhu to Beunos Aires is 6333 miles.—A. and N.Z. Gable. Poldhu, near the Lizard, has been made famous by the Marconi wireless station, which has been in operation there since 1901. Mr Marconi chose the site for his first attempt at signalling across tho Atlantic, and on December 12, 1901, he received signals at St. John’s, Newfoundland. His transmitting aerial was a conical arrangement of 400 wires, supported by four towel's 215 ft high and 200 ft apart, and this was energised by an alternator, using a rotary disc discharger. The receiving equipment with which Mr Marconi heard these first signals employed a coherer, and the aerial was a wire 400 ft long, held up by a box kite. Poldhu is thus an historic name in the story of wireless.