RADIO NOTES

Manawatu Standard, Volume XLIX, Issue 78, 1 March 1929, Page 3

RADIO NOTES

_ MISCELLANEOUS. (By “Transformer.”) “What is the life of a valvo ?” is a question by a prospective beginner. The average litc can be put down at 1000 hours, but somo makes exceed this. To prolong tho useful life of a valvo its filament should not bo burned too brightly. Tho rheostat should be adjuste to givo just tho best results and not turned any further on. The capacity of condensers and leaks used in resistance-capacity of audiofrequency amplifiers is olten a troublcsomo problem. The condensors should be about .01 mfd. and tho resistances about 1 megohm. One-eighth of the 8,000,000 persons in Hungary live in Budapest, the capital city. Despito this urban population, moro rhan one-half of tho 95,000 registered radio fans in that country are rural listeners. The number of stations deleted from tho lists of broadcasters as a direct result of the notification to close down served on 164 ■American stations amounted to 36. All but 57 of tho owners of the cited stations appeared at tho hearings with witnesses and affidavits, and 21 stations’ owners filed affidavits by mail. Through tho medium of the gramophono records, tho world’s vocal stars aro brought right into tho homo by radio, and a diversity of programmes is offered by radio. Six montns is a reasonable time to allow for tho “C” or grid bias battery. A radio company with business premises in Adelaide and Melbourne employs its own aeroplane for delivering sets and parts to outlying towns. It is proving a big advertising stunt, but a costly one. Those who operate crystal sots will find that volume may bo increased by decreasing the pressure ot tho cat’s whisker on tho crystal. This applies to tho majority of crj stals. Do not test tho voltages of your battorios when ,they aro not in uso as they may givo quite a healthy reading, but as soon as tho set is operating the voltages will more than likely drop a little, or, in tho case of run down batteries, may Prop quite a lot. When two condensers of equal capacity aro joined in scries, tho resultant capacity is half that of ono condensor. The incorrect adjust of grid bias “B cattery” not only causos distortion, but is liable to load to an unnecessary drain upon tho H.T. (“B”) battery. A bus line operating between Birmingham and Montgomery, Alaska, U.S.A., has recently equipped all of its vehicles with receiving sets that are proving popular with passengers. They givo the travellers tho news of tho day, the latest weathor reports, and seasonal sports, besides music. D.X. is simply an abbreviation standing for long distance. In this way “a good D.X. receiver” means one which has a good long-distance rango, and similarly “D.X. reception” is reception of stations which are a great distance away. Owners of mutivalve radio receivers at Terrace End have experienced considerable interference of late, from tho howling valve nuisance; another form of interference that has also been very prevalent is that caused by violet ray massage apparatus, and the now obsolete battery charger of the vibrating armature type. Interference from this course was so. strong last night that owners in a particular area had no recourse but to close down their sots. Representations are to be made to the authorities concerned to try and have the trouble located. JAPANESE STATIONS. Now that winter is approaching, reception from Japan will be on tho up grade. Below is a list of tho main Japanese stations which was published in tho Osaka Asashi, Japan’s largest newspaper:— JOAIC, Xokia, 10,000 watts, 044-9 metros; JUBK, Osaka, 10.U00 watts, 400 metros; JOCIv, Nagoya, 1000 watts, 370 metres; JODK, Keijo, 1000 watts, 366 motros.; JOFK, Hiroshima, 10,000 watts, 353 metres; JOCK, Kumamoto, 10,000 watts, 379.7 metres; JOHlv, Sendai, 10,000 watts, 389.6 metres; JOIK, Sapporo, 10,000 watts, 361.1 metros. Those who have short-wave sets and have been desirous of getting cards from any of the short wave Japanese stations can do so by sending to station, care of Kasahara, boO Tennoji-cho, Osaka, Japan. All cards or letters sent to that address will bo forwarded to the desired station. WIRELESS TERMS. Blocking Condenser.—Another name for a fixed condenser. Its purpose is to givo a short path lor radio or audio frequency current such as that which flows from the batteries. Broadcast Band.—Tho band of wavelengths ranging from 2UO to SUU metres. Amencau receivers are constructed so as to receive on this band only. Brush Discharge.—A discharge of high tension electricity, which takes the form of a luminous glow, accompanied by a crackling sound. Bulb Rectifier.—ln battery charging appliances a bulb rectifier consisting of a filament and a plate ill a glass bulb having a low vacuum or special gas is used for the purpose of converting alternating current into impulsive direct current by cutting off tho flow of these impulses or currents which flow' in tho wrong direction. Busbar.— Copper wire, often tinned, used in wiring the circuits of wireless sets. It is manufactured round (diagonally) and square. Ofton insulation known as spaghetti is used on the wires as well. Buzzer. —An instrument consisting of a coil of wire wound round a soft iron core, near which is placed a steel reed, or armature. Currents flowing iA tho coil from a small battery magnetise the core and attract the armature, which breaks contact and falls back. This is repeated many times, causing tho buzzing noise. Capacity is tho property of a device, or body to store energy in electro-static form. It is tho property which a condenser has of receiving and'storing a charge of electricity. Generally referred to in torms of micro-farads.

TO-NIGHT’S PROGRAMMSE. Radio programmes for to-night are as follow: — IYA AUCKLAND (333 metres).—6 p.m: Children’s session (Nod and Aunt Jean). 7,15: News and market reports. 8.0: Special programme, introducing Welsh airs —in commemoration of St. David. 8.1: Gramophone record. 8.9: Vocal, Clarion Quartet, “Swansea Market.” .8.13: Soprano, Miss Alma AlcGruer, “Bolls of Aberdovy.” 8.17: Instrumental trios—Auckland Trio, (a) “Romance”; (b) “Intermezzo”; (c) “Saltarello.” 8.27: Baritone, Air Frank Sutherland, “Tho Fiddler of June.” 8.31: Gramophone record. 8.35: Recital, Mrs Culford 8011, “Owain of Drws Coed.” 8.43: Vocal, Clarion Quartet, “Tho Broken Cross ” 8.47: Gramophono record. 8.51: Bass, Mr Duncan Black, “Tho Missing Boat.” 8.55: Pianoforte solo, Mr E. Waters, “Valse in E. Alajor.” 9.0: Contralto, Miss Beryl Smith, “All Thro’ tho Night.” 9.4: Weather report. 9.6: Gramophono records. 9.14: Vocal, Clarion Quartet, “Men of Harlech.” 9.19: Instrumental, Auckland Trio, “Danse Macabre.” 9.28: Baritone, Mr F, Sutherland, (a) “Charabanc Joe”; (b) “The Bachelors of Devon.” 9.36: Gramophone record. 9.44: Recitals, Airs Culford 8011, (a) “Days that Have Beon”; (b) “Old Megan Llandunach.” 9.53: Tenor, Mr James Simpson, “Tho Ash Grove. 9.57:

Vocal, Clarion Quartet, “Land of My Fathers.” 10.1; Closo down. 2YA WELLINGTON (420 metres). —6 p.m.: Children’s session (Big Brother Jack). 7.0: News session, market reports and sports results. 7.40: Lecturette, Mr D. McKenzie, “The Laws of Cricket.” 8.0: Chimes of the G.P.O. dock. A special “St. David’s Day” programme, presented by the choir of the Wellington Welsh Society, under tho conductorship of Mr W. Aked. (Accompaniste, Mrs J. Tucker). 8.1: Choir, “God Bless the Prince cf Wales.” 8.5: Address, Mr J. Tucker, President, Wellington Welsh Society, “St. David.” 8.12: Orchestra, “Keltic Suite.” 8.24: Mezzo-soprano, Mrs W. Wilman, (a) “Pleser—Fad y Niagera” ; (b) “The Gentle Bird.” 8.31: Choir, (a) “I Was. Tossed by the Winds”; (b) “Dymuniad Plenty.” 8.37: Gramophone record. 8.40: Recital, Mr Barton Ginger, “Scrooge.” 8.46: Bass, Mr Wilbur Davies. “Cheerily Yo Ho.” 8.50: Vocal quartet, Members of the Choir, “Ar Hyd y Nos.” (All Through tho Night). 8.54: Orchestra. 9.2: Weather report. 9.4 : Choir, two Welsh folk songs, (a) “Ijlob t Derry Dando”; (b) “Sospan Bach” (soloist, Mrs W. Wilman). 9.10: Orchestra and chorus, “The Leek.” 9.22: Soprano, Mrs E. A. McLeod, (a) “Merch y Melindd” (The Miller’s Daughter) ; (b) “In the Chimney Corner.” 9.29: Vocal, Mrs E. C. Andrews and Mrs J. Tucker, “Y Dan Whad Garur.” 9.33: Gramophone record. 9.37 : Humour, Mr Barton Ginger, “Grindle Junior.” 9.44: Baritone, Mr J. Tucker, (a) “Pinad Anrhydedd” ; (b) “Thy Sentinel Am I.” 9.51: Suite, orchestra, “Suite Romantique.” 10.1 : Part song chorus, choir, “Let tho Hills Resound” (Welsh National Anthem) (soloist, Mr J. Tucker). 10.8: March, orchestra, “Great Big David.” 10.13: God Save the King. 3YA CHRISTCHURCH (306 metros).— 6 p.m: Children’s session (“Mr Storyman.”). 7.15: Nows session. 8.0: Chimes. 8.1: Gramophono record. 8.9: Tenor and quartet, Mr Ernest Rogers and Grand Opera Quartet, “Land of Our Fathers.” 8.13: Violin, Miss Ireno Morris, “Air on G String.” 8.18: Contralto, Mrs Anne Harper, “Idle Days in Summer-Time.” 8.22: Pianoforte, Miss Bessio Pollard, “Welsh Fantasia.” 8.26: Bass, Mr J. Filer, “Homeward” (sung in Welsh). 8.30: Gramophono record. 8.34: Christchurch Broadcasting Trio, (a) “Minuotto,” (b) “Vivace.” 8.44: Soprano solos, Madame Gowcr-Burns, (a) “Tho Rising of the Lark,” (b) “My Little Welsh Homo.” 8.49: Gramophono record. 8.53: Tenor, Mr Ernest Rogers, (a) “O’er the Stone,” (b) “The Stars in Heaven are i Bright.” 8.58: Weather report. 8.59: Gramophone record. 9.7: Contralto, Mrs Ann Harper, “Now Strike the Harp Gladly.” 9.11: Violin, Miss Ireno Morris “Canzonctta.” 9.15: Vocal quartet, “God Bless the Prince of Wales.” 9.19: Pianoforte, Miss Bessio Pollard, “Air.” 9.23: Soprano, Madame Gower-Burns, (a) “My Master Hath a Garden,” (b) “The Welsh Mountains.” 9.27: Gramophone record. 9.30: Christchurch Broadcasting Trio, (a) “Ar Hyd y Nos” (All Through the Night), (b) “Men of Harlech,” (c) “Moment Musical.” 9.38: Mr James Filer and Grand Opera Quartet, “St. David’s Day.” 9.42: Gramophone record. 9.49: Tenor, Air Ernest Rogers, (a) “Oh, that Summer Smiled for Aye,” (b) “Tho Dove.” 9.53: Grand Opera Quartet, “Welsh Rhapsody.” 9.57: Vocal quartet, “God Savo the King.” 4YA DUNEDIN (463 metres).-^.O: Children's session (Aunt Sheila and Big Brother Bill). 7.15: Nows session. 7.30: Lccturotte, Mr H. Greenwood, of.the Dunedin Athcnaoum, “Book Review.” 8.0: Chimes. 8.1: Gramophone record. 8.9: Quartet, 4YA Harmonists, (a) “The Dying Harper,” (b) “Rising of tho Lark.” 8.15: Violin, Miss Eva .Tudd, (a) “Shepherd's Danco,” (b) "‘Tempo di Minuotto.” 8.21: Recital, Miss Joyco Hould, “Lloyd George’s Speech on ‘Peace’.” 8.29: Gramophone record. 8.37: Mezzo-soprano, Miss Molly Andrews, “I Love tho Jocund Dance.” 8.41: 4YA Broadcasting Trio, “Liselotte.” 8.47: Tenor, Mr H. A. Johnston, “Mifanwy.” 8.51: Gramophone record. 8.59: Pianoforte, Mrs Ernest Drake, (a) “At an Old Trysting-Placo,” (b) “In Autumn.” 9.5: Weathor report. 9.7: Soprano, Miss Mae Matheson, “Sing, Sing, Blackbird.” 9.11: Welsh song, Mrs E. A. Isaacs, “Serch Ludol.” Lccturotto, Rev. G. E. Moreton, “Wales.” Wolsh song, Mrs E. A. Isaacs, “C'odiad yr Hedydd.” 9.26: Gramophono record. 9.30: Baritone, Mr F. M. Tuohy, “Mine Enemy.” 9.34: ’Cello, Air P J. Palmer, “Alinuetto.” 9.39: Gramophono record. 9.43: Recital, Aliss Joyce Hould, “Marguerite.” 9.48: Trios, 4YA Broadcasting Trio (a) “Entr'acte,” (b) “Berceuse.” 9.57: Gramophone record. 10.3: Quartets, 4YA Harmonists, (a) “From the Village Steeple,” (b) “Dear Harp of My Country.” 10.9: Close down. 2FC SYDNEY (442 metres).—B p.m. till 11.45 p.m. • 2BL SYDNEY (353 metres).—B p.m. till midnight. 2GB SYDNEY (316 metres).—7 p.ra. till 10 p.m. 3LO MELBOURNE (371 metres).—B.o: H. K. Love will speak on wireless technicalities. 8.10: Collingwood Citizens’ Band. 8.15: Bernard Manning, bass-baritone.. 8.22: Band. 8.27: Huxham Serenader Quartette. 8.47: Imperial Russian Trio (Arvcd Morit, violin; Ivan Berzinski, 1’cello; Vassili lister, piano). 9.0: Jovan ' Alassonoff, tenor; 9.7: Syd. Hollister, comledian. 9.14: Eric Welch will speak on to-morrow’s V.R.C. races at Flemington. 9.24. Cambrian Gleo Party. 9.31: Band. 9.36: Iris Turner, soprano. 9.43: Cambrian Gleo Party. 9.50: Band. 9.55: Eric Jones. 10.2: Band 10.7: Mai Morgan, contralto. 10.14: Cambrian Glee Party. 10.21: Owen Griffith, tenor. 10.28: Band. 10.33: Gwiadys Williams, soprano. 10.40: Cambrian Glee Party. 10.45: News session. 10.56: Radio Revellers. 11.30: National Anthem. 3AR MELBOURNE (484 metres).—B.ls: Eric E. Aikens will speak on “To-morrow’s Events at the Motordrome.” 8.30: Community Singing from Alalvern Town Hall. 10.30 News session. 4QG BRISBANE (385 metres). —St. David’s Day annual dinner relayed from the Jenolan Cafe. 10.0: News, weather news. Closed own. Note: New Zealand summer time is two hours ahead of. eastern Australian timo.