Show 7 C nic irl ira ti rm JJ X F ca diagram of five tube one dial set which will tune in many DX stations many little knobs are eliminated in nn an effort to give the radio fan it a set bet that will do almost arnost everything that eart can reasonably bo be asked capt 11 II 11 II kramm of Wood Woo dlynne linne N J hns has de e signed a five tube radio frequency set that from till all indications hns every other set of its size lucked backed oft off the alie map all the principal tuning Is done with one dial and it truly can be called a one dial set there are aie many sets cla claimed tined to be one dial sets but they hev have a ot of of little knobs that till nil figure largely in the tuning with captain bramms s set the tuning Is done with one dial on tile the distant lis stations there are re two on oil the condenser tint that enable tile the listener in to clear up the sounds the set et Is extreme extremely y sharp and cap fain kramm says that at his labor labont i tory at Woo woodlyne dlynne three miles by bl ill line from station he was able to tune in cleveland meters and louisville deters it ind completely cut out powerful local station when WOO Is on the air lie cnn ann cut out this station and get memphis which operates nt meters one of tile the things that will interest the fan who desires to build ills his own set is that lins has beed getting gt tle Ill pacific effic const coast consistently luring during the summer lie ile hm had KM INT both of los I 1 os angeles lit regina alii i and oakland Oi LIand calif lie he has also tuned in ill honolulu Ilono lulu a number of times the fan fail must not expect to get tills this ft fati tion around 10 or 11 0 clock at its as there Is it a dif Terence of live hip and one half hour between and honolulu the last time binic captain kramm tuned in fit tills his station lie had them thein on hie air clr for foi about one hour it wits was about 5 i our time when lie be turied tuned in honolulu lie he got 42 distant stations in two nights readings ps can be calibrated another important feature ahmit this ills sot set Is that the lie rea readings dings con can be calibrated the only tiling filing that will necessitate a change in the numbers logged ls Is tile lie use of another ati tenna the condenser use used Is a special type ope just being put on the markit market it Is three condensers in one with two ver vern olera lers the rotor plaus plates are on oil the main shaft and all at one time the vernier on one side moves the stator plates of the first condenser while the lie vernier on the lie odier side moves the stator santor plates of tle tie second condenser the stator of the third condenser Is tile coils lire are of the duo lateral type this Is absolutely necessary us curtain cartain branim fills used other types of windings und and found the results not as good as when tile the duo lateral wind ings anga were used tile the test thing filing the average set burder builder can do Is to buy three 75 turn duo lateral cells on 2 inch anili forms forma take 15 turns oft MY each coll coil part of which Is to be used for the primary winding the GO 0 remaining on the coll coil forn form tile the dary cover the secondary duh two layers of varnished cambric and then add tile lie necessary number of tunis to form the primary wIndi windings rigs as shown in the diagram prepared by captain Kr branim artim the base board Is 17 inches long 8 inches deep and nil gill the parts are to he be mounted on the top of the board no Is wed list of parts needed the parts m eded for the construction of tills this set bet excepting tubes which should ile be the lie A or batteries and loud sp eaher are its as follows I 1 scientific compensated multiple con condonier denier 5 scientific sockets KO lets I 1 leik leak I 1 braille bradley etin condenser denser I 1 0 3 ohan rheostat I 1 2 ohm register 1 olini ohm OX DX r remer eg 1 t e r 1 05 0 N Y loll coil condenser 1 N Y coll coil condenser I 1 single jack jai k 1 do kin gan transformer 0 t 9 1 1 lemn transformer ja to 1 7 binding posts I 1 panel 10 fly I 1 7 indies inches 10 lengths 1 coil fio 60 turns secondary lary 16 turns primary pr linar 2 frequency oils coils GO turns Fe condary 8 turns the flirts arts neove tire are hose used hy by C captain iii tain krunig lie ile states t that other oilier makes can I 1 e use ched most instances instance but that it Is absolutely necessary that the set builder follow the he as to the duill number of turns on oil coils and the size febe of transformers and fixed condensers jirld resistors to get the desired results It ecord |