FOR AMATEURS.

Auckland Star, Volume LIX, Issue 259, 1 November 1928, Page 7

FOR AMATEURS.

WIRELESS TALKS.

Australia Speaks To Java And America.

CLEAR RECEPTION.

(Received 11.30 a.m.)

SYDNEY, this day Successful wireless telephony test* were carried out last night, Sydnev people conversing with Java and bchenectady. The reception was clear, the speakers exchanging items of news as if thev were talking from one town to another nearby. IMPORTANT HINTS. Audition Sometimes Hard In America. GREAT EXCITEMENT. (Australian and N.Z. Press Association.) (Received 10.30 a.m.) SCHENECTADY, October 31. The following comment on the wireless telephony tests has been issued from the Schenectady station: In view of the fact that 2ME, the short-wave station of 2FC, Sydney, heard us excellently, as seemed to be confirmed by statements of Australian speakers in May, it is interesting to point out some important aspects of these experimental conversations. It is necessary that speakers should take up subjects that have immediate connotations to listeners. Australians in this rcspcct were excellent. Their queries about American elections received immediate response here. The room echo in Sydney on the microphone made audition here difficult at times. It is further believed that improvements in the Sydney microphone will result in better reception here. It waa a frosty dawn and most of the speakers had travelled hundreds of miles, leaving their duties in some instances reluctantly, but when they started speaking they literally trembled with excitement, and in their anxiety to bo heard they literally shouted into the microphone.

They were thrilled beyond words and at the breakfast table afterwards it was the solo subject of talk. The publicity value to Australia was great. Immediately afterwards trunk line telephone calls came from American listeners in various parts of the country, stating that they had heard conversations which were rebroadcast by WGY, Schenectady. Mr. Dow inquires whether the coo-ec which he uttered was heard. ANGLE OF BEAM. INTERESTING EXPERIENCE. (Australian and N.Z. Press Association.) (Received 10 a.m.) HARTFORD (Conn.), October 31. Radio amateurs in Australia and the United States will sit in on an interesting experience at two o'clock on the morning of November 1, eastern standard time, when tests of transmission between the two continents will be made on a ten-metre wave length. The meetings are sponsored by the American Radio Relay League and will last one week. The principle difficulty on the ten-metre length is in the angle of the beam. Mr. E. C. Crossett, of Chicago, has erected a new transmitter at his summer home at Wianno (Massachusetts), from which tests will be made.

Instead of the angle of beam being varied horizontally the beam is variable on a vertical plane. The direction is on the Great Circle to Australia, and it is fixed vertically so as to shoot the beam off on the long tangent practically parallel to the surface of the earth or to any angle up to the vertical. The angle of the beam will be varied constantly in an attempt to find the angle at which communications may be established with Australia on a regular basis.

PICTURE TRANSMISSION.

SYSTEM TOR VICTORIA. (Received 12 noon.) MELBOURNE, this day. The Postal Department proposes to instal a picture transmission service from Melbourne to Sydney, using the telegraph lines. By this means it will be possible to publish a picture of an event happening half an hour earlier in another State. The system will also help the police. GISBORNE HEARS. Two-Way Communication On Ten Metres. MR. O'MEARA'S SUCCESS. (By Telegraph.—Press Association.) GISBORNE, this day. Experimental radio telegraphy on a ten-metre wavelength as referred to in the above cable has been conducted successfully during the past fortnight by Mr. Ivan O'Meara. Hitherto this low wave has been regarded as of no commercial value, although communication has been previously established between France and America and across the American continent.

Dissatisfied with previous opinions, Mr. O'Meara embarked on further tests, with the result that at 7.20 a.m. (New Zealand time) his ten-metre signals, sent in code, were picked up and decoded by the amateur station 6UR, California. A further step was reached on Tuesday when between 1 p.m. and 1.30 p.m. both Mr. O'Meara and Mr. Robert Patty picked up signals from station 6XV of the Federal Telegraph Company, Paulo Alto, California, at good strength. Twoway communication on ten metres was thus established, although not simultaneously. Mr. O'Meara, however, has created a record in this quarter of the globe by maintaining a regular two-way communication with an Adelaide amateur. Mr. O'Meara is continuing his experiments, directing attention mainly to different times, which he believes have a more important bearing on the question than the angle of beam referred to in the cable. He is confident that it will be only a very short time before regular tenmetre communication, which will be an epoch in radio telegraphy, will be established.