RADIO

Star (Christchurch), Issue 18959, 4 January 1930, Page 26 (Supplement)

RADIO

By

“ AERIAL.”

SOMETHING NEW IN TELEVISION.

A New Type. Writing from East Pittsburgh, Penn.. U.S.A., on December 4, a “Star” correspondent reports :—Television which can be viewed by a room full of spectators rather than by one or two was announced recently by Dr Vladimir Zworykin, research engineer of the Westinghouse Electric and Manufacturing Company, to members of the Institute of Radio Engineers. The use of a cathode ray valve as a receiver gives this new type of television many advantages over the well known scanning disc method of visual broadcasting. The inventor is already in a position to discuss the practical possibility of flashing the images on a motion picture screen so that large audiences can [ receive television broadcasts of important events immediately after a film |of these is printed. These visual ! broadcasts would be synchronised with i sound. No Moving Parts. i The cathode ray television receiver I has no moving parts, making it more } easily usable by the rank and file of the radio audience. It is quiet in [ operation and synchronisation of transmitter and receiver is accomplished easily, even when using a single radio channel. Another advantage is that, using a fluorescent screen, the persistence of the eye's vision is aided and it is possible to reduce the number of pictures shown each second without noticeable flickering. This in turn allows a greater number of scanning lines and results in the picture being produced in greater detail without increasing the width of the radio channel. The apparatus described by Dr Zworykin is now being used in experimental form in the Westinghouse research laboratories in East Pittsburgh. A number of similar receivers are being constructed in order to give the set a thorough field test through station KDKA, Pittsburgh, which already is operating a daily television broadcast schedule with the scanning disc type of transmission. Larger Pictures. The pictures formed by the cathode ray receiver are four by five inches in size. They can be made larger or brighter by increasing the voltage used in the receiver. The transmitter of this new television apparatus consists of a motion picture projector rebuilt so that the film to be broadcast passes downward at a constant speed. This film is scanned horizontally by a tiny beam of light which after passing through the film is focussed as a stationary spot on a photo-electric cell. The scanning motion of the beam is produced by a vibrating mirror which

A 2YA ARTIST

Miss Eileen Kimbell, a very pleasing singer, who appears at 2 Y.A. WT M deflects the light from one side of the film to the other. Dr Zworykin was forced to develop an entirely new type of cathode ray valve for his receiving apparatus which he calls a “ kinescope.” In this valve a pencil of electrons is bombarding a screen of fluorescent material. The pencil follows the movement of the scanning light beam in the transmitter while its intensity is regulated by the strength of the impulses received from the transmitter. The movement of the scanning beam, and, consequently, of the cathode ray pencil, are so rapid that the eye receives a perfect impression of a continuous miniature motion picture. A reflecting mirror mounted on the receiver permits the picture to be observed by a number of spectators. This condensed description of the methods used by Dr Zworykin to effect television transmis sion can give only an idea of the possibilities of the new system. To the radio public it means, when perfected, a means of television which will be simple to operate because it has no scanning disc or other moving mechanical part. The receiver will operate in silence, offering no interference to sound broadcasts. To the radio engineer the invention is important for the same reasons and because it will not be wasteful of radio wave bands This because the transmitter and receiver can be synchronised using but one channel. The name of Dr Zworykin is not new to the radio public. Earlier in 1929 he was brought into the limelight in connection with his facsimile transmitting device for telegraphing photographs, letters, drawings and documents.

I!lilllillillllll!lllll|[|llllllllll[ll!llll!nilllllllll!l[!ll!!!lll!lllllllllllltllllllllll!lllllllllin WEEK-END PROGRAMMES.

FOR TODAY.

N.Z. Stations.

Details of to-day’s programmes of the New Zealand stations appeared in last night’s “Star.” Below are some notes on this evening’s concerts, and the programme to be put on the air by Brisbane. Appearing this evening at IYA will be the New Zealand Four Male Quartet, who will provide the vocal items of the musical programme in solos, duets and quartettes. Other fine items will be given by the IYA Orchestral Octet, including the suite, “Romanesque,” by Besley. This programme will be followed by dance music until 11 p.m. The evening’s programme at 2YA will be of an unusual nature. It will be a ringside description of the whole of the evening performance of Wirth’s Circus This programme should prove of more than passing interest not only to people in the city, but specially to country dwellers and patients in hospitals. Prior to the relay the Salon Orchestra under the conductorship of Mr M. T. Dixon, will pla> r as an overture Binding’s “Life on the Ocean Wave.” The usual dance programme will be presented at approximately 10 p.m. 3YA’s programme will be marked by much variety. Mr and Mrs J. W. Bailey, two entertainers from Wanganui, will be presenting two sketches. Miss Betty Hilliard will sing jazz songs. A new instrumental trio (Miss Gladys Vincent, Mr Francis Bate and Miss May Garden), will play selections, while solos will be played by Miss Vincent. Vocal soloists will be Miss Rose Horrell (soprano) and Mr Harry Francis (tenor) There will be selections by Miss Elaine Moody’s Hawaiian Trio, and humorous numbers bv Mr J J. Flewellyn. This programme will be relayed to 4YA. Australian Stations. 2BL Sydney (353M.).—From 10 p.m.: “The Vaudevillians” will broadcast a complete act this evening, when a cast of first-class entertainers will provide half an hour of song and comedy. The company comprises: Dayne Roland, who is well known as a broadcaster in Sydney and Melbourne, and has taken many dramatic roles besides some opera singing: Margaret Grimshaw, who played leading parts in musical comedy, where her exceptional contralto voice quickly brought her recognition; Violet Collinson, who will be remembered as having introduced the “On the Missippi” number in the original “Come Over Here” Revue, and now returns to popu-

lar singing after ten years of work as! a first-class concert artist; and Dismal Desmond, who has been with us often—always the same bright little crepe-hanger. This act should prove an entertaining half hour for listeners.

2FC Sydney (451 M.) From 10 p.m.: The play “If It Were True,” will be produced by Lynwood Roberts, the wellknown actor, through 2FC this evening. The scene is the dining-room of Colonel Challoner’s house on the edge oi a lonely moor near Portland convict settlement, England. Near Colonel Challoner’s residence is another house occupied by a young girl and her blind mother. Colonel Challoner is a friend of the blind woman and her late husband. In fact, they were brother officers on the Indian Frontier. The hus band has been supposedly dead for six teen years, reported killed in action An escaped convict bursts into the house and reveals himself as the miss ing man. The woman cannot see him. 'and never knows the truth, but the subsequent developments involving the other characters make an interesting play. .. Veta Wareham is a violinist of great ability, who will broadcast from 2FC to-night. She won a scholarship to the Sydney Conservatorium which was extended during the whole period of her studies there. Miss Wareham toured Australia and New Zealand as a mem ber of the State Orchestra under Henri Verbrugghen. She has given Severn recitals, and at all times proved herselt the possessor of talent of a high order She is a member of the “Antique Trio and also broadcasts frequently as a soloist. 4QG, Brisbane (385 M-). 10 p.m. to midnight: 10.0: Music from the Trocadero. 10 10: Concert by “Two Sad Sunbeams,” J. W. Eurgemeister (cornet). Annie Adams (soprano), Millicent Nagel (piano) and Roy Baird and his orchestra. Relays from the SpeedFOR SUNDAY. IYA, Auckland (333 M.). 3.0: Afternoon session. 6.0: Children’s session. 6.55: Relay of service from St Matthew’s Church (preacher, Canon Grant Cowan). 8.30 (approx.): Relay from Albert Park of concert, by the Auckland Municipal Band. 9.45: Close 2YA, Wellington (416 M-). 3.0: Afternoon session. 6.0: Children’s song service. 7.0- Relay of service from St Andrew’s Presbyterian Church. Preacher, Rev R. Howie, 8.A.) 8.15 (approx.): Studio concert by the Port Nicholson Silver Band and assisting artists. Band, “Roseate Hues,” “Down South.” Soprano, Mrs Amy Bunn, “Jerusalem.” J. H. Squire Celeste Octet, “Memories of Mendelssohn.” Baritone, Mr Ernest Short, “Glory to Thee, My God, This Night.” Cornet solo, Bandsman T. Goodall, “Titania.” Contralto, Miss Hilda Chudley, “For Ever and a Bay.” Band, “Old English Sea Songs.” Soprano, Mrs Amy Bunn. “Ave Maria,” “Bilies.” Vocal duet, Gladys Cole and Barrington Hooper, “Speak to Me of Aly Mother.” Band, "Amina.” Baritone, Mr Ernest Short, “Give a Man a Horse He Can Ride,” “Tally Ho.” Organ, F. Rowland Tims, “At Batvning,” “Shepherd’s Lullaby.” Contralto, Miss Hilda Chudley, “Let Miss Lindy Pass,” “The Wind Song.’ Band, Prelude.” Vocal duet, Bessie Jones and Barrington Hooper, “Now I Will Dance but to Please Thee.” Band, "Invercargill.”,

3YA, Christchurch (30SM.). 8.0: Afternoon session. 5.30: Children’s song service (children of the Methodist Sunday Schools). 6.15: Hymn ‘ tunes from studio 6.30: Relay of ser- . vice from St Albans Methodist Church, Rugby Street (preacher, Rev L. B. I Neale). 7.45: Studio programme: San Francisco Symphony Orchestra, ‘•Midsummer Night’s Dream.” 7.57: Soprano, Miss Sylvia Angus, “Beyond the Dawn.” 8.1: Don Cossacks, “Three Folk Songs.” 8.5: ’Cello, Mr Francis E. Bate, “Lamento.” 8.10: Baritone, Mr Leslie Fleming. “Ideale.” 8.14: Organ, Edouard •ommette, “Fantasie m O Minor” (Bach)'. 8.22: Instrumental Trio, Misses Gladys Vincent and May Garden and Mr t rar.cis Bate, “Extase,” “Serenade.” S-31: Contralto, Mrs Nellie Whitworth. Christmas Bells.” 8.35: Berlin Union ot Teachers, The Lorely.” 8.39: Karol Szreter and Berlin State Orchestra, Hungarian Rhapsody No. 2” (Liszt). ?,y 4 '' •. S .™i lan ?’, Sylvia Angus, T ? le Alninnd Tree.” 8.53: ’Cello, Mr Francis Bate, "Menuet" (Boellm"nil) 8.57: Baritone, Mr Leslie Fleming, Route Marehin',” "Prpnm Trvst ” 9.3: Hofburg Chapel, Vienna, "Joy, Queen of. the Wise.” 9.7: Instrumental i Tr, °e F — Al,e 8™ and Animato” (Gade). 9.16: Contralto, Mrs Nellie Wlntryorth "To a Nightingale," “True Bo\e. Berlin Sta,te Opera, “Aida Triumphal March.” 9.30: Close down. 4YA, Dunedin (461 M.). 3.0: Afternoon session. 5.30: Children’s song service. 6.30: Relay of service from Knox Presbyterian Church (preacher. Rev L. M’Master, B D of Christchurch). 7.55: Weather report 8.5: Relay from Band Rotunda, St Kllda of concert by the St Kilda Band. 9 15 : Close down. 4QO, Brisbane. 8.0 p.m.: Children. 9.0: St Barnahes Church of England—Children’sservice--9.3o—Evensong. 10.30: Band concert from Wickham Park. Close at 11.30