Show AN 0 ax I 1 by it V i t nir P it kaos I 1 A I 1 LAW 10 wt A JOAA 3 1 10 G dt A AB 1 abut F fit TV a low I 1 VIA I 1 I 1 r TVA jill L loop US I 1 0 0 A A AMAL V set shown ll 11 an j old circuit to which halt adapted ari am Aper lodle arl mary that it Is semi ada adjustable custable I 1 lie lip it at ri I 1 ill i r I 1 i it I 1 I 1 to all I 1 pit lill III r II 11 II 11 till III g I 1 1 I 1 0 s in 1 ll 11 inn nr ar IN to it 1 I r il II 11 it i I 1 r I 1 I 1 IH Is k wit in mill it ili II 11 I 1 I 1 II 11 fl fv W I 1 inis if f win A iri lh is k it 1 s I 1 till tit I 1 f fl r 1 I list II 11 irs 1 VI to rit 1 tl I 1 ll 11 t I 1 I 1 I 1 s r III II 11 1 1 it 1 I 1 I 1 I 1 ll 11 I 1 f rl ltd I 1 f 14 1 I f it 11 alto 14 a ull I 1 I 1 tilt 1111 II 11 I 1 I 1 II 11 I 1 I 1 1 II 11 r irdill so I 1 ul ui ll 11 1 4 i 1 1 I 1 j i 4 hi ili ekht it 1 14 1 8 11 in n il it i alili till ile lc aiji HII alii its 1 tit to nw 4 its 11 i i tl if will i ri IN H fill 4 i 1 little Is I 1 I 1 1 11 it ii it I 1 r rl I 1 idle odle primary no li le fi ri 11 I 1 I 1 alli it li it is noll ihil t tuc tit an ain old told phil aln ili it mt tilt I 1 lieper I 1 ile lip pet ft sa s1 nn it ix in nn tin oil rc ruilt tilt to wl ach tins ban I 1 un tin ill ri dle primary that ll 11 HI lot till it ro as idith to control lie datri dP tri of N hh but little hott nott tills this prin principle tiple ran can I 1 e adal ted tu to tiny of tin i id ld at tle le circuits ordinary parts the parts used me nie the tile ordinary risible condenser of ca laity or U plates and a ither of the 00 90 or Ib Oleene vanity I 1 ills ladt lias has to be rewound wording to seu 1 I et I 1 ficat fica lons tIong that will mill bo ile cavm the basic cinnlt Is that of he tile orli inal de forest ultra maudlou and has nn tin excellent range alume ol unie and tonal fount quilley lu ln ite original f rin fill it is ie le to n an oil I 1 tilt reft retire re was not u un tin up to hiti rl u eel celer er la in its nev f fi nil fill I 1 ull all radiation Is eliminated if the tube Is kept mow wow tie or live paint po int the set alien ft hen finished Is capable of satisfying the most critical fail on tile points of selectivity as it cinn nn he lie ud ad austed to any decree degree so that it run can tune out powerful poi erful nearby interference Interfere nie or broadened for distance wl til here la Is latte interference part parts required the tuning units ind construction material utilized in building the tile periodic met are one 11 itin winding ding one or 23 plate v variable cou con anser one 7 bj by 0 9 panel ono one rheostat one socket one plunger type variable grid p ld leak one A crid grid condenser input transformer or filter sharply tuned ae As la Is now well ell known the super fiete rodne has seven more or les less dia dis parts first there Is the receiving device deslee and tuner shown shon at the tile left of the diagram this inputs into the lie first tuie the third part Is the osell later lator which falso inputs a frequency into the first tube the oscillator input and the receiver input differing by a certain fixed flied frequency for ellich the group of intermediate mins formers are especially tuned to avoid other frequencies creeping into the intermediate amplifier here there te is placed before it an input transformer wore properly called a ory r lit sf d tute 31 ethl this batill va Till wt div fi A diagram showing the receiving device dovice tuner and oscillator filter for its purpose Is to transmit through only that frequency tor for which tile intermediate transformers are adapted to make this input transformer or filter sharply tuned a sr ie Is placed its it primary this Is al mays specified ne as R fixed flied condenser usually matl Liper lence with hundreds hun dreda of them has shown shon however that a fixed condenser here b h wrong i ron because the condenser condensers vary ary the filters vary and the transformer vary chis 1 I hie filter determines the intermediate frequency and a var variable lable condenser hould always be used and adjusted in combination with the oscillator con denser to greatest grea teat volume the osell lator frequent must be varied aa as you aws dij new condenser when i L babi I 1 is ir I 1 it 11 14 win uit w is ri st hind mad allu I 1 I 1 1 i I 1 ill iorii ri f ci ro ww urne tani ml i II 11 D ali P ix I 1 in ili ro ell efi d it lit tit t tl it i 1 I I 1 1 1 rt nt pt 1 I in ino tl tie P tirla 1 p cn c n 1144 II 11 1 us I 1 r 1 I i it I 1 sh 41 ill I 1 h of f ti tit I 1 li v 1 t I 1 gr mij I 1 I 1 i ii if till in ili I 1 i liick I 1 oil 1 I 1 tl to I 1 I 1 ft it I 1 r 1 r I 1 11 lit i ri rl 11 II it i it 1 r 14 1 made up of flirt line 0 to it nr ir ti to 1 mil I I 1 I 1 n to one I 1 if f W st arns im ait t 11 f 1 turns on the tile mat stat or r nf of tl 0 coul ir li tint nn 1 other of if 12 turns to tin in tin fill r 4 t r I 1 hie lie O tuni andini tin 1 1 turn in at IK i 1 I 1 al at out of an in ili h noart ahe rotor winding In ding 1 14 exactly in lit it lie e et nit r of V 0 rotor I 1 tail all or tule tuto I 1 h lie two 1 12 1 turn i ila art connects to one another ns shown shon in the tile tl ti n and firm f nn uie the aper lodle pr linar inar I 1 UK lit turn coll coil Is the secondary rind Is bunel tunel I 1 by ti tic e arli thle r nohh lit it 1 14 shuntel I 1 across arross it NN ind the culla coils lili ly an I 1 fustin the endi of the wire firmly about no 24 14 gauge can double silk or cotton cohered lre ire choul I 1 te butted rhe conne t ion letvn lit IR t w et n t tit I 1 e I 1 12 t turn uni sta beator tor and rotor colls coils Q bould uld be ninde with a lilore piece of flexible I 1 Itzen draught of anil mul tl ti strand ic wire A ire do not use the trana or bearin as a friction contact la Is noisy nt at HIP tilt iest mounting M 1 hie tile coul and ar nl lable ableon con tit tiser on the tile tf t I 1 e 1 si I in of the panel about thrle or fo four U r I 1 inches lie it es apart care should be liken wiring iring to imke mike till 11 leads as shown shuw a T d direct att n possible disregarding squyre corners note vote the leid le id from the 91 so s 9 L o fondary to tile plate thia this 1 Is in no uny iby connet tid to the ula fua or ground round any tie of 0 acrum tube works cf of f clely le a rheostat of the arop er and 45 4 notts ot of U B buttery on and find A 22 volta on n ilo 1 11 and a n d 12 1 1 and an 1 I U 1 t s nie the crid grid leak ban brins flexible can be adjust adjusted Ld for uny any tube the tuning control Is the variable condenser con dinser this logs and the settings are permanent for all stations tie rotor of the coupler Is solely for tte purpose of controlling selectivity boston Tra traveler eler the new condenser Is adjusted to one oine 8 station it should not aln again be touched its tiit beiting ting Is then permanent it Is 13 important hovi however eiter lu till first getil rig the setting to adlet the occil lator d ul at ciery the filter ron eons denser li Is chucked chunked ch just as you adjust primary and secondary tonden sr sin an sit lt how taps on coils will aid in tuning tapped connections to colls are made to lile a step by step turl yarl otton in the number of turns the more common use of the tapped 13 s in connection with the ft here the aerial la Is made more she slie to a high or low wave by the post pmt ion tion of the all itch in the aerial circuit the switch coa con trots the primary coll coil by terminals con necking from front e aery pry fifth turn of ha the coll coil to a tap or moni button the connecting to the switch ina arm and the ground to one end of the coll OIL regarding Keir ding the aerial and ground HI as the plates of a R fixed died condenser of ai a capacity equal to that of a grid con denser or microfarad which it a actually Is it Is seen that it Is feces mry sury to add a certain number of turn turns to the tile coll coil to make it to a gilem wave length tuning in the secondary Is acetic j polished by a fixed flied coll coil and at variable condenser and in the primary coll coil in duchance duc tance the result Is practically tita anae if it one or the other Is varied varlet but both may not be fired to obtain ifill 1 clency the fixed primary Is a comp compromise rons to simplicity battery acid I 1 ammonia or bicarbonate of eoda will check arid hat that has hits been pilled wiled from a battery from eating into this abet of the this cloth |