Show I 1 by 1 I of lits ito L L ca ca 0 5 4 ca A D gran of regenerative circuit using two has good die tance qualities and gives strong signal dy by J 8 CAULFIELD the varl 1 I ui ler in five iima 1 I in ili ire re for a tin lilt n cani jut lu t ann for ollar oil timp 11 and 11 tire in iliad if 0 o fil feel that IN 1 nil till it con be uil for 1 lacre are filter use for it lipoid iii biting ailing its a I 1 hill try kind i late ull oil iwo 1 wo inny may to 1 used 11 in une one mt set rid make inline R belttle pelt 01 o 1 tle HI bell dl its a belsen r ai brah net A rge anth in lilt filling 10 two Thirlo cou lilt rs Is 1 1 HI it will III in be fairly in tit ID to ih tin lung une fail but it in III R that IN ili arv rv fi to a grout great antin I 1 i ir of ratio ru llo huki it hill very ci goel di distarce starke and given a io ry scions leir rial the 1 arts a arts for thin circuit tire re tin it f hows ilona 2 stand ir I 1 varlo couplers I 1 OXY 11 mid vurl ur uble lable condenser cigrid 1 arld lol ibe 1 bupt 4 ket etui 1 tul I 1 1 nil X I 1 ined fixed condenser I 1 rheostat IA 1 A hatter 1 4 ot olt 11 II battry life I 1 lie pir linar inar of the arlo coupler P if 1 to the and find one side of the Fe condary b S ten good rules for broadcast listeners I 1 don dont t try to hear australia in ti ii I 1 e to enjoy the nearer ns no inot of the time thue 2 t 1 I on it t be b d sap appointed pointed if an occa storm should interfere with aw ur radl evening there are ninny many fine con oderto concerts OD erts coming I 1 ou can cant t ex pact to tind find a it pearl in every oyster cur nur to cecelie e a record breaLl breaking ng con eon cert ever night 3 it if you want nent louder signals use k I 1 longer aerial more tubes higher plate voltage more sensitive loud BI isi eakers and it ore careful tickler and re celer adjustment 4 A pleas nt int signal filling a ale ate sized room should be enough to give satisfaction it ie Is not worth north alle while producing signals which deafen the neighbors it Is wasteful to insist on tremendous dou signals which are gen brally lesa lesi pleasant than moJe mode rutt rut big aig nals 5 if you local elation station comes conies in too loudly and drowns others out twit a mailer smaller aerial will help in tuning him out with ith a smaller condenser con necked between aerial and ground and if all measures to get rid of the local station fall why not enjoy bis his concert con cerU lie ile Is working hard for you and it Is fault that you are to 0 o close to him that you are bound to hear him broadcast stations have to be closer to some people than to othere 8 6 for the th DW new longer waves above meters use a condenser connected between the aerial and ground nail tali of your set sel 7 A little patience in learning to handle your re Lefer yields rich returns in satisfaction from fine signals remember that rome wasn gasn t built in it day and keep on getting more and more familiar with your set and how it works 8 it Is a good idea to read the tile radio column of i a newspaper or a good radio magazine or two it helps you to 0 o know how your set work works and keeps fua you 2110 to date in radio anfor matlon mation of this iii s an aid in get ting ong the concert concerts loud anu jar J I ar 0 9 ask our radio dealer for advice be can probably tell you what you want A alint to know and III be glad to do so the manufacturer of your set Is also willing to help aou ou get the tile delred results from its use 10 po not throw away anay the direction sheets or that came with our set end and with the tubes read all such material carefully now an I 1 then it if you have lost ile 1 I e direction sheet write to the dealer or or manufacturer for another the direction sheets answer most of f the tile question questions which aich have been puzzling vou ou and prevent ing you from getting the bs beir out of your set I 1 should know trick tricks of favored crystal set those who have the future of the radio amateur at heart am arv worried they are not worried ner oer je permanency of radio as a an art or ni an a public utility that Is assured but the fu iture turp of the amateur phase of radio Is not assured there Is a dirk cloud hanging over it at tle present fent time which threatens its very existe existence nm the tendency of the present day novice la Is to ron run along the wrong wron track and andi unless he reverts to the portion of the tile amateur of radio a early day days la in steed of f u the little fu fw ili 1 ire finet td t d to one on ilde side of the mitri 1 1 of the mccond ler ill lap tops fire brought to a tint tl it witch 1 conne sled to the tile gri I 1 through lie the wf niad erid grid ca hie life riun nond dary irv 12 li is connected tc to the blatt lull und and ne tie side aide of the telo I 1 ike hnis ni 9 A 45 ined variable c n tanner cl CI li is bonneted conn eted fd across UK the A rolf 11 on I 1 II 11 I 1 find nd the filament ent return of the Mc 14 ahe filament ll 11 in the manner ilie life follo following lul tuning pointer til he ile I 1 ell fill ful to box mho try this cir ell cult I 1 alt tit both rotor rotors hot bet at an tin cle of 45 deir pt and bout one li ill of the lie wire aire on 11 II topped in carlna lie tie st condary cor dinser will help 0 lo 10 o ate the 1111 broaden stIng million lons a stath n is 1 loc lockite tite I 1 tune in as its loud As 1 p w atit ic its with tile lie rotor of the dro arlo coul h or md and the sc andary ondi iry on ten darr 14 nsf r then try arang lie tile coil pling of the rotor of if the second varlo cupler cup lir ie Is abere you will en counter R squeal which ie to typical ol 01 the tube when in an oscillating condl ti tn n make this tills adjustment to tl it 0 joint where ou oil get P the strongest stron Reet ss six nal without diM new lor orld orl 1 I tor lu to radio development he lie will bei ine a mere incident without IN th glory and credit lint that baa has be longel to him in the past I 1 he fie buyer buer of IID tin automobile who buys lilt the idea of dri driving vini it himself hinis and to a laige decree degree caring for it flins hl ins if if he Is wlee ise tuna a tur ur of relatively rel atik y small cost and sin bill pie construction III studies it until he fie becomes intini intimate atel acquainted with ith its merits and find atit neak weaknesses nesses finds out ho how to get met ali most and the best out of it uy by IN th time he lie has mustered mastered his first car it 4 Is naturally ambitious to possess one on of greiter attainments one tint ft III do bitar and better chinis and he li Is ili 1 to he be trusted eulth such a ill of machinery lie ile Is almest almost tur sure to remark that he lie Is glad that he lie lud lead enough to lenra learn on the junior but the I 1 tendency of the radio no noila let Is not to climb the ladder of experience but rear reah li the top by one big bound to plunge plunie into elaborate and cosily appa ratus this leads to poor results in re belving cel ving and the rendering of examples to the neighbors nelch bors the dl dt voicing from the radio idea of many who might become enthusiasts and ol 01 benefit to the art the amateur may well start with th crystal set it present presents a fascinating field for experiment lie ile should make his own wan let set if at all mechanically in clineb should learn ite its how and eliy from A to 4 Z to know when he I 1 Is 13 get ting all that Is in it and lit not why not there Is a lot of fun and a lot of 0 efficiency in a well built crystal set and a 4 lot of joy in receiving rec elTing over what you have made yourself of sh off your own child it Is doubtful if receiving ceiling over any costly outfit will eer eler give the genuine satisfaction to the owner ouner that comes from reception over the outfit that cost a few dollars and that he has himself put together let a get back to the old way ways radio friend let a tart start with the crystal set make a friend of it and learn all of iti ito trick tricks if we ne must have a set of greater capacity lets try one of simple con st ruction with a hook book up not 0 over er our heads lets try a single tube set and master that before we ue jump into corn 0 m plex apparatus 0 1 and invention aad radio necessary when building radio outfit for the construction of a radio receiver the following tool tools are all that are necessary nece seary one breast drill with assorted size drills ranting ranging from 1 32 to inch two to good screw driver drivers one heavy point points ne one one point one pair of compass divider dividers one marking tool one square one flat flie file one three cornered file two pairs pliers one bentey hem electricians pliers ont on sharp nosed electrician electricians i pliers one sharp knife one hacksaw one set of oi good 9 d clamp damps ome some sheets of emery and tine sandl aper one soldering iron and d solder paste and solder radio part of study midshipmen of he united naval academy at annapolis Ann apoll have to t take up radio and pass putts a thorough ev e smI nation before graduation one ol 01 the requirement requirements I 1 is to build a werk work ble able receiver celver re A storage battery hint when a storage battery fal fall to take a charge it II 11 aa all indication thai it need needs to be at a IL battan son anac ice station A |