Show laul radio owners may soon see all big happenings the day when radio owners will be able to tune in on sp ortin events and other happenings of interest in any part of the country and see them in stead of merely hearing an announce ers description has moved one step closer the bell telephone laboratories recently their improved sunlight television apparatus which several full length figures as hey move about an area about the size of a boxing ring previously television had been restricted to record ing no more than a head and shoulders at the recent demonstration a man served tennis balls drove a golf ball boxed with a companion and went through other motions on the roof of the laboratories and on another floor every action was shown in perfect detail on a screen about two inches by three the television images were as clear as the average movie and were marred only by an appearance of being under a paper thin sheet of water amov ing slowly upward across the picture this defect engineers attribute to the fact that the electric eye of the scans its beld through holes in a revolving disk an increase in the number of these holes or adjustment of their position they believed would eliminate the trouble k te new makes use 0 sunlight in picking up the image lt transports instead of the powerful beam of artificial light previously used which had to be set so strong that it was uncomfortable to the subjects of the experiment an improved photo electric cell far more sensitive than those used before made opera ration by sunlight whether the improved could operate with mica lights such as the movies use for night events has not been tried out but engineers no difficulty tn the way of such an adaptation bell laboratories officials declined to make any prediction as to the future developments or applications of the invention but acknowledged that the development illustrated the continued interest of their en ginders in television as something north working on the new tele alsor Is identical with the company a previous models et capt tor hanges in the transmitter which permits the use of sunlight reproducing ef a larger field ringing may be easily checked very often in amplifying circuits where high mu tubes are used a bowl Is noticed in the loud speaker which Is not changed by adjustments ol 01 the receiver if this happens the tubes are said to be this condition can usually be corrected by moving the reproducer away from the receiver although it may bf necessary to mount the tubes on sponge rubber to dampen the bibra alons there are on the market at present several types of shock proof sockets which are helpful in preventing this ringing ex changing tubes in the sockets Is also helpful in some cases radio radio aids phonograph industry in S america the growing popularity of radio broadcasting Is giving impetus to the phonograph business in south africa instead of ad verly affecting it E D lawson united states trade commis loner at johannesburg reports that programs containing gramophone recitals aided by publicity have been very effective in promoting sales of records jazz music Is waning in popularity in that country a gramophone gram aphone compe conducted by a capetown station indicated in the five most popular records selected by vote of 1300 listeners no jazz elections were in eluded way to control volume with little distortion it la often found when receiving beets incorporating power tubes are used for local reception that the vol ume Is excessive the usual method to reduce tills volume Is to turn down the filament current on one or more of the tubes in the set but this some times produces distortion and unnatural tone possibly the simplest method for controlling the volume without harming the quality Is the of a fairly high resistor in the plate lead of the last R F tube this method controls tho volume effectively without introducing any no ti ceable distortion radio news clean off insulators and improve reception after a receiver has been in operation for some time t will generally be found that reception can be im proved by overhauling the antenna system the best method of course Is ro put up both a new wire and new in sula tors although carbon tetra chio ride can be used very effectively for cleaning the insulators it will be found in some cases that simply clean ing the soot of the insulators will cause a material improvement in abes reception radio new a w 9 |