Over The AERIAL

Waikato Times, Volume 112, Issue 18778, 28 October 1932, Page 5

Over The AERIAL

gy IHBOSTAT^.

THE COMING WEEK. Sunday. 7, service from Salvation Army Citadel; 8.30, relay from Whangarei -of concert toy Whangarei Municipal Silver Band. 2YA. —7, service from St. Gerard s Redemptorist Church; 8.15, “A Musical Pilgrimage, With Song and Story, Through the South of England." 3YA. —7, service from Trinity Congregational Church; 8.15, relay of studio concert from 4YA Dunedin. Monday. IYA.—-11, talk; 7.30, talk, ‘‘Principles of Export Trading”; 8, relay of wrestling from Town Hall. ,2YA.—Talks, 11.12, ./‘Cooking,’ 11.37, “Health Hints or First Aid," 7.40,’“Y0ur Eyesight"; 8, studio concert; 10, dance music. • 3YA. —11, talk, “Things Antique"; 7.30, W.E.A. session; 8, concert by Derry’s Military Band. Tuesday. IYA.—talks, H, “Health”; 7.35, “Town Planning";#, studio concert; 10, dance music. 2YA.—Talks, 11.12, “Fabrics and Fashions”; 7.40, “For The Man on The Land"; 8, studio concert. 3YA. —Talks, 11, “Fashions”; 11.40, “Gardens and Gardening"; 7.30, “Biographies, Travel, etc”; 7.45, "Tourist Resorts”; 8, studio concert; 9.30, dance music. • Wednesday. iYA.—7.3O, W.E.A'. Talk; 8, studio concert; 9.30, dance music. ,2YA—11.37, talk, “Hollywood Affairs”; 12, relay from Palmerston North of openiqg of Royal Show, by the Governor General; 7.40, talk, “Tennis"; 8, relay of musical comedy, “The. Girls of Gottenburg," toy the Palmerston North Amateur .Operatic Society. 3YA. —11.30, talk, "Food”; 7.30, Addington Stock Market reports; 8, studio concert; 10, dance music. Thursday. iYA.—ll,talk, “Domestlo Electric Appliances"; 12.30, service from St. Matthew's Church; 7.30, W.E.A. session; 8, studio concert. 2YA.—Talks, 10.45, “Cooking by EleotrloltyV; 11.37, “Health Hints"; 3.15, "Home Science"; 7.25, Summary of N.Z. Golf Championship Tournament, by H. -A. Black; 7.30, W.E.A, session; 8, relay of concert by Wellington Symphony Orchestra. 3YA. —Talks, 11, .“New .Zealand Speech"; 3.15, “Home Science”; 7.30, review of the Journal of Agriculture; 8, studio concert. Friday. IYA.- —11, talk, “Home Industries”; ,7.30, sports talk; 8, studio concert. 2YA. —11.12, talk, “Fashions”; 7.30, championship golf tournament summary; 8; studio concert; 9.30, dance music. 3YA. —ii, talk, “Cooking,and Art"; 7.30, W.E.A. session; 8, studio concert. t Saturday. iYA.—II.3O, description of Auckland Racing Club's meeting; 7.30, horticultural talk, “Roses”; 8, studio concert; 10, sports summary; 10.10, dance-musio. 2YA.—7.25, golf tournament summary; 7.30, W.E.A. session; 9, Old Time dance programme; 10, sports summary; 10.10, continuation of old time dance music. 3YA. —12, description of Canterbury Jockey Club’s meeting; 7.30, talk, "The Ottawa Conference"; 8, relay from Dunedin, of Hallowe’en concert, by Dunedin Burns Club; 10, sports ♦ummary; 10.10, dance music.

ULTRA SHORT WAVES.

EXPERIMENTS IN AUSTRALIA. .During the past three months the engineers of Amalgamated Wireless (Australia), Ltd., under the direction of Mr E. T. Fisk, have been carrying out . a series of experiments on the ultra short wave-length of 7 metres, and although a power of only 10/15 watts Is used In the aerial very satls-

factory results have been obtained, reception being effected in many of the suburbs of Sydney and in one instance at Springwood on the Blue Mountains, about 30 miles air line from Sydney.

The transmitter is located at "Wireless House," the vertical aerial being attached to the flagpole on the roof. The radio frequency energy is conveyed to the aerial by means of two feeder wires. The frequency of the carrier wave is maintained constant by means of a crystal oscillating on a wave-length of 112 metres. This frequency is multiplied by means of frequency doublers until the desired wave-length Is reached—namely, 7 metres. The valves used are the same as those used in putolio address amplifiers, enabling the house service mains to be used for the H.T. supply. The object of the tests is to determine the usefulness of ultra short wave-lengths for giving a broadcast service over a restricted area, without causing any appreciable interference outside a comparatively limited range. If this proves possible, a number of local broadcasting services could be carried out on a common wave-length without mutual Interference, a development of great importance and utility.

WIRELESS AND WHALING.

USE OF DIRECTION FINDERS. •Si.., Seven Norwegian whale chaser vessels employed in the whaling Industry of the Antarctic Opean are having their wireless equipment overhauled by Amalgamated Wireless (Australia), Ltd., at Stewart Island, off the southern coast of New Zealand. During the season these vessels are attached to the Norwegian factory ship “Sir. James 'Clark Ross" in the southern seas. Prior to the days of wireless the chasers were chary of following their prey too far from the mother ship. As can well toe imagined, exactness in navigation is not a feature of the excitement of the chase, and should one of these tiny vessels And itself too far from home it might, in those desolate and stormy seas, be in an awkward predicament.

Thanks to wireless, distance from the mother'ship Is no longer a matter of consequence. When a ' whale is sighted a wireless message to the mother ship indicates the fact, and if there is a “school” other chasers are informed by the same medium. When, at the end of a chase, the time comes for the chasers to return with their catch to the factory, there is no question as to where the latter may be found. Navigation by the old methods of sights and calculations is unnecessary. A wireless signal from the factory, or mother-ship, is picked up by the direction finders carried in the chasers, and it toeoomes only a matter of steering the latter towards the point from which the signal emanates. After last successful season, during which the wireless installations were buffeted in rough seas, the chasers returned to Stewart Island. It is, of course, very important that this equipment .toe in first-class order for the ensuing season, and Amalgamated Wireless despatched a radio engineer to make sure that everything shall be right. That engineer has reported that, despite the fact that wireless operators are not carried in the chasers, the gear is in excellent condition, and very little actually requires his attention. WIRELESS TELEPHONE. USED ON RECRUITING SHIP. One of the latest developments in radio is its use for a wireless telephone service between the British Phosphate 'Commission’s steamer “Triona” and Ocean Island, where the manager of the B.'P.C. is established. The operator on the “Triona," who is in the service of Amalgamated Wireless, has written to 'the company’s office in Sydney explaining the use of the wireless telephone during the annual recruiting voyage of the “Triona" in the Gilbert Group. He states that the telephony transmitter was in constant use and the assistant manager of the commission on the ship gave daily reports by telephone to the manager at Ocean Island. Only on one occasion was it necessary to repeat the conversation; that was owing to a nearby spark transmitter jamming the speech. I On no occasion was it necessary to use earphones; the loud, speaker provided clear speech throughout the trip. The most distant island in the group is 540 miles from Ocean Island, and as j all transmissions were conducted In daylight the service could not have been more satisfactory.