WIRELESS NEWS

Press, Volume LXVII, Issue 20328, 29 August 1931, Page 29

WIRELESS NEWS

(By '"Ala*. > " whanwearobeginnins to think i seems litfcle prospect oi any in "<>» "»"• comes some welliJ| "vl' ,| w ith welcome inforixmimprovement. Perhaps the tfiW » « !ativ ° '? °^ alnin 8 * nofrer from * pusb-pulJ stage. ! - «stem is extremely simple, *5 in biasing the grids of f ..J, null valves down to approxi*jrtSr current in the plate cirtharo is no signal input. (Slto, *,rrM>w ia that twice tbe input be permitted thus giving "WrtTvariations of plate current, with' biasing to the centre of - volte platc-current curve, i<*Jf tin Biw ther advantage, and wisT that during every negative So« of input voltage on the grid Her vnlvc, that .valve w.l! draw Arrant. thus permitting better disiffrf heat at the plate. The St e voltage can therefore be stepped 'to give about double the normal 2jimom .pJate cuh-ent. The average «kw current remains about normal. P" # «• grid of the other valve -will L poafixe during the time that the Gratis negative and, with double the 'ffoary voltage, will give at least four the variation of current jjwjr would bo obtained with the preaflt.jwtbod of bineing to mid-point, tla increased lougth of curve will now of a still greater input voltage. f„ gam up ilie statements mtho article jluf that,even a pair of 20IA-type ujtts.can be made to give from five a ten times the ordinary power outsit without more than the permissible fffrfiwnm of distortion. Similarly, any stluT pair of valves with a larger ratjjjg. wiU giro the same proportionate bonise. * $

"fteOiago Radio Club it. strongly in kntar of the Radio Broadcasting Canpiuy continuing with broadcasting, {Jtopgb not necessarily exactly the present conditions. % all sides we have urgent . for the Government to . jncjjum its views. Now it is quite on fiords that there is no real policy in ' kjp«d to broadcasting and that the fij#n®eat is availing itself of the nHprtaaity to find out the views of fimoera aa well as what the trade It is certainly time that we mri given some inkling of the GovernvaA't ideas. These could then be conateed in relationship with the prc-.ggjjfa-suide by the Broadcasting Gorojuj, and suggestions which are ex--ft.ota an early conference of jfipeEk A point raised by the Post-'fpsr-fieneral when interviewed in 'to the new proposals of the I -JteteUag Company is that the lat.#gnaW haTe a majority vote in any Ipttt'irader discussion, for the chairm'jrpnld' have _a casting vote. This •ptoioag,. but if the dividends are to 'a reasonable percentage , as id, then it seems probable that tt profits, when there are any can be set aside for allowBWposes, will be used in extendJiyfesenke of broadcasting, Increascapital at'a later period, if Obered necessary, might give -the fcwewing Company an opportunity icoeaae its holdings, but listeners ft probably Have similar privileges. &fMQar reasonable to argue that, with S.Wjerience behind it, the present SMny i? justified in expecting gorao Mt balance tif power. They will "■wly aim for success and' listeners ■Mza shareholders will also- benefit ifeara .important feature, to the SpS? B is that the position of pa jWeners' representatives needs doj®!*' Good men should be chosen for glP'iand it might be a wise plan. '-SlfcPt number of candidates who 'ijjjffi ™ dealers, for it i& quite on the SSI l ' our listeners' directors SMis interested in the radio trade. would be useless and Wjgjrof money. Possibly the one §fi|gg|-the traders' conference to proposals will be that the gPggjinj! ask for representation on ®|§S|W' of_ Directors, apart from sM^loominations. radio experimenter claims sHSt/JUs discovered a method of ||grt«g tHe decomposition of Be uses a radio frequency ,S®ffWor which operates on a wave#bont ten inches and after a 'ra*j sonie .ton days, and within ffiß* of sixty feet, the electric ISjy gp* completely preserves orgaA broken, egg has been for several months, so it

Broadcasting Company has been Py the British Broadcasting OTWWion that a running commenrace for the" Schneider ygkj**"™ is scheduled for Saturday, 'iSi , will be broadcasted by ;*Wi«nortwave station GSBW. If the place the ftew Zealand 'Stt® ■■®W7 out a rebroadcast y hours of Sunday mbrn- * * • liti ■^ erl9 Miller, of Christchureh, fir North Island next week °J,. singing at IYA • fan, A y Muss Miller is a mezzo- '» i 'S 1 ? dramatic ability. She ' Um!? a pianist and is the 2§!r **°®panist at 3YA. While Conservatori urn, where Bara studied singing and :-L to * B y»ng, die appeared frequently cqneert platform. The most !ErTt®~7 °« her pubic performances 'tct 1 ?.. yl^ney Philharmonic Soof "Faust." For Joseph Hislop had been °eS®ged. Miss Miller took 1 n °* Siebel. Besides gaining i 88 Miller has the honI* %rni«.* ni ?. , en awarded the Conserdiploma for singing. K■ * w and captain of the EjSli Rugby football team will 2YA next Thursday benefit of Australian iWtA j V lO ' ias been fixed at • . Australian stations m fited to rebroadcast. '(iti.' : ii * * '■'-Nito » broadcasting the Aus,":'^3ftenloonnterljUry match r^3ttdin C ?lI^ rt to . be givpn in f 18 eve mng will be }**J?i*Z 3 T. A and 4YA. An ' t will play excerpts fi'om i 2f "Rio "Ameri--n' and two numbers wented for the first Zealand—"Russian er) and "Knights of y s most recent com"Medley* is a t of traditional RusThe "Regal Four" soldiers' songs, two iting songs, and two aster Frown will dis£on this occasion. Jill be heard in some Jar melodies in song, Mr Kenderine will i to orchestral accomcf the Nightingale." Sst" will be the pro «n Monday evening.

Notes From Fav and Hear

A concert party of tho loading vocal talent of the town, a Hawaiian Orchestra, and a first-class band will give a concert in the Studio. Dining the evening, Mr W. A. Eowse, Mayor of Rangiora, will speak on "Town Life in the Country." Tho singers will include Miss Thelma Ay res (soprano), Miss K. Cassidy (soprano), Mr Geo. March (baritone), Mr E. D. K. Smith (baritone), and Mr G. D. Blake (bass). Mr J. Hancox will play two violin solos, and Mr C. J. Smith will bo the humorist for the evening. ■:t -* A concert arranged by Mrs -J. • Palk, will be broadcasted by 3YA on Wednesday evening. September 2nd. Mrs Palk is one of the Christchurch teachers who have their P U P|* S specially for microphone singing. The programme to be presented is an excellent one. The ' vocalists, will m* elude Miss Annie Lucas -(mezzosoprano), Mrs Palk (contralto). Mr A. S. Bell (baritone), and Mr ■l'. y. Chambers (bass-baritone). Mrs * a j. will ho heard in '.'Alia Stella Conhdente." sung to 'cello ohbligato b.y -Sir Harold Beck. One of Mr Bell's solos, "Bird Songs at Eventide," will have a background of bird voices. On the instrumental side of. th<v s - lca gramme will be Miss Maisie , ' pianist, playing liehfc classical uu ™" hers, and the Studio Octet, under tor Harold Beck. » * When Mr J. F. P White. M.Be., "8.A.. nf Canterbury College, speaks from 3YA next Thrrsday evening on "A Trip to the Andes." he will have much of interest to say concerning mining "for copper and other mm in that historic Mr B. Iveagh Lord will give next of the series of tal |^ B «vA Storv of the Golden Coast" from oX& nexs - Friday evening..