Show Q Edited Edd by 0 0 Dog Douglas Ed Editor or of Radio Rado Merchandising I t I I I i iI i a V 1 f fi J x I t IY t I y f 1 If Y e i iSI K j Ij I f If I II I II I Radio t at the tho University or of Part Illinois-Part of Broadcasting od Studio Transmitter and Power Room All in One Success o of thc lie wa wave e system system tem tern of broadcasting which was tie tie- de developed elopEd by H II A Brown and C A members of the electrical en- en engineering en engineering sf staff of oC the University of Illinois Is announced as positive I another series of tests which bore out the lie results of previous tests held over oYer overn overa II a period of more than n a year ear Tile The elimination of ot fading Is an added feature of the new broadcasting 8 system tem which now seems possible In Inthe Inthe Inthe the last of oC tests Instruments which accurately measured the lie curve cune of audibility of both the lie carrier wave system and the new system were set up a distance of miles from station H I the university's radiophone with which the experimental tal work II lis is carried on These instruments Instruments Instruments ments showed shoved the usual fading when the old system was used but did not vary ary a pa particle when the was employed however Howeler this advantage advantage tage Is not nol yet being claimed he use It has hns not nol been subjected to enough tests to establish It as ns a n fact Previous Pre advantages nd which were claimed for or the system and which the final tests show as outstanding over the system now In general uso use Include Increased sending more se- se selective se selective tuning at the receiver with greater possibility to tune tunc out local opportunity to cover corer greater distances and the lire elimination of all sorts of sounds which are arc Impressed on the carrier wave and which only perfect modulation at the transmuting transmitting end and perfect detection at nt the re- re receiver re receiver celler can eliminate The fhe suppressed carrier or sy tem differs from from the present type of broadcasting In that the carrier waves go out only when a note Is sounded or a syllable spoken Be fie- Between Between tween notes or spoken words the car car- carrier carrier rier riel wave does docs not go through the air That Is the sound and the lie wave on which It rides leave the broadcasting apparatus simultaneously This In- In interval In Interval tel al of time between sounds when there Is no carrier wave In the air makes possible the advantages noted |