Show 11 boo d sr I 1 4 1 lug RE am fi mow w r 01 0 o 1 li Is ef 1 I I 1 n abed I 1 I 1 or f I 1 it I 1 f f cpr I 1 I 1 I 1 nr d a 11 g t I 1 lh 11 ll forea im if 11 I 1 I 1 arri I 1 ill III fit I 1 of 1 tl 11 e i I 1 n to f r 1 4 10 I 1 1 1 lit tl t of 11 f uri rl I 1 C lauw 14 bpi application of f above method of tuning the th orld grid provides tonal quality T th hat equals the crystal its inventor CIA me A ell 1 l e rn n grid so 0 o ih ito t not drw loncy current ila 11 into tl if P prill and thu mull pill hi li if fill object nole bolm or lip nel I 1 I 1 11 I 1 low iov or giff olem into ile aft crid grid in ty I 1 y Oil Cl iBrI arles boink of or sew new lork rh ill in nn n for n intent talent iio item no ilia III old to be lip derla I 1 from front lie the ment andulo in ili ae a met ft that I 1 in no n rudl it ing 1 and nd remark lily arf rw 0 from 11 laititi ril in an rd ae I 1 in the ali low co cot at of ion lion description of circuit sir 1 11 k a I 1 lant it I 1 t tit lew felt ill tit n of tile fir alt filos it ja firing ell to ll 11 ile f dru ing the tilt till 0 lit I 1 ithna n at IN I 1 oft of lip lie three pit elt rt brodt roil siope ti alir ito plato 11 lellia dai tit 11 tl ti r filament nt at 1 und find lie tile erid grid ht tit 0 up ile I 1 Is I 1 cosine tell in circuit with hie the battery and in titles 1 ln alt tire cliones or il ill alle life flipe eon denler 1 C in ron con it IK r s t tin I 1 it from froin gnp ne flip of eilf tt i linci il ill to tie minus f tip 1 e 11 battery ahe F 14 1 connecter connect el 1 in cir chilt with nn till k I 1 and in clouded Indu deil in fill carf tilt lit 1 A ahm 1 avitt int II 11 by fly n 4 of ell t I 1 HP I 1 p n lotny bw bit con controller trolle I 1 lie I 1 I 1 e flint rit nt and iante I 1 late thu reele inu a frequency current TI tip e garld alil 0 lit I 1 it ltd 1 I in an of op n circuit itil flindt flin nt o 0 n i a 11 will ith a un ill denser 0 r onnrie onn gnp rde aed arcq 1 the plate tl 0 grid of the tlc alc tube N nn on sade of tile 1 r heinz onne te to to the bertill al 1 the tile of 01 cosite ide side f the iter IN I 1 mith the r ald G rind lod in ili tills this conne conniett ett on ie in it fared condenser cl and a farll arl I 1 leak L L I 1 lie i 1 late circuit Is convicted connic acted ted ji important improvement in headphone for radio rie rudio though retain inz in ninny of lie the original principle principles ii 1 being constantly improved to increase its and electrical effI efficiency clency lit cl abit al are con scantly beang botn made to ret get the lie re celer as light as jos possible sible and to Inc increase reake its st and durability the whole ecret secret of good head bend photes lies ID in the accuracy to which the air cap between the tip of the pole piece and the la Is adjusted the distance between the diaphragm and nd rach each of the pole piece alps mint must be the lamrand some and of the correct proportion to so that the maximum volume way be liml hall without distortion in lie earlier I 1 ape pe of headphone tl tie mat inan pt and colls coils were on the inside of the bark back of the re celer ra race se the outside edges of the tile dia CAP MAW EMI Y SHELL CORD Sh th the various parti parts of ht he receiver I 1 thras iiran rn then reeled rested un on hie the edee edge of thy the 1 cue and the distance die tance of the froin from the pole piece tip depended on the trueness of the re athell with ith the ati but beat of rua ma clibern and nd manufacturing method methods ther be melver uell cannot be made wade ac c carste enough to ingbre that the tilt lance ance of the tile air gap ap ii hlll ill be uniform anither of this meth ineth od of construction nai vias that the th case had to 0 o be bulot extra krone strong to hold he h it tight of the magnets and coll thet inner of the case had to iffie b utie and andl each eatch ilde side of III the burtnet dra drao no cotora evenly 1 to the biase with the th n I 1 tit n it 11 e ir lilt ir r vide no tin grid ro rn rit stich as in 14 us 11 tally conna IP te I 1 fr fir in I 1 lift I 1 a fit 1 juit nt F if to tit it r art 11 cief r I 1 no fro clint I 1 or ini fro fr q ann it n r durrf tit will pom into the trill grid iliam arrangement aill 11 to IP le ron imoni f tin und d in rl 1 I 1 ro PI atik ing cl clr r till n will arto file isa 1 siring I rt rig nn tin I 1 clear an I 1 hlll ill A to radin ion tion all of A anre 0 I 1 in lip to the f fi to I 1 flint tha re lot 1 nn fin ell flirtie et I 1 I 1 ron con ne nation flon it 1 I 1 naom reen tilt ali ari I 1 tin annl I 1 I 1 into 1 ii lilli lillo I 1 it I 1 P tuning den entas in tl it e c fir nit are clirman its a art 1 r and ind birlat ic le on nn it lnor anter it Is IN of bouss tant tl it r gifts silly in 1 tf to aut ul Fi litte I 1 right to make changes the invention Is 1 or f tarl 1 oils 1 in ite its form ns n annl an I 1 mini min r detulio of const nit I 1 ton and the richt right in 1 hortin to wake rush hadgett han gett ni its lv fall thes oft 0 f hip n nopil fantin actu file I 1 lip pill nt dearril larl lf rl lion ll 11 4 1 rill flint f it att lot air lr lilt tilt iles in its ti tine ap ii allt equi dIng 11 II it of it 11 ri d to certor tile tuning timing la Is felir enji file tie gerej raff ti if n coin com if r if tie e ina link k of if eli sh irp tuning I 1 loail ill tati honer hoer jie ji a e tull 81 abated I 1 arts no eded it tie e f ill irwine wing coll meter ca capaiu paIt I 1 11 I 1 ship con condenser denker M alp P pint I 1 ill tit es 01 A or I 1 fire milt ill fit IP to rd rill I 1 ik Is 1 unno unites start I 1 kd ell n 1 I oscr wl makes t ir tilt is n r e biln I 1 ut fro lui lift V PS tt 0 e i i I 1 reri re Is n lift n it Hadl itil n Is ili fall t mith lit tit c ci n derider den r or f any ape friar ie to added to this tir tilt nev ew I 1 ork mall niall so rea to I 1 atiq a I 1 lad to tie ile of tile lip epher an impair I 1 ins its been de dp itne I 1 Y maj 11 II arnst 1 r st ani t I 1 yalta slat a a oria rescue in the tile method of n bunting lie the ml ignets and the tie ro ale lie plows which eliminate the uncertainly uncertainty of f lie the ad j list ment and hermits the use of A it lighter receiver rec elier shell the magnets tut nets and the pole pher are mounted on a strong rong aluminum cramp int ing that flint lias has a flange for supporting eipl and seating lie the diaphragm in this manner the distance between the flip dia ila phrazine an I 1 the tip of the pole alwes Is altiana the tile samp same within a ier en all lusht fit either way m ny the tipi tips of the pole pieces can then be light slight 1 I round ground down don in so that the distance 1 Is practically all identical in even ever recel receiver pr the file ends of the phone cori i are then attached directly to the colli and tilt whole hole using inserted in the ret caste much like the alix acial errit ly of a match ath at h the earple serene into the copf find and the magnet assembly and dia dla are securely held in place tin tilt troubles tron blee me file nuts and conin connection fur for the headphone hend phone on the lie back of tile rae cate are eliminated and the tile chance chances for leakage of prior eneri aero lie the buin bu in m here the tile r ci a ae e I 1 roulet through froni from the inside 1 I the ase lase are done ami ano alth try switching tubes to increase efficiency loti m te to get art inert Iner use tase in efel dalny it nt y equal to ai as flint h as nf W to 71 per cent lv liv merely werely sit whirl the lie tubes around in the different sot let lets in lit fir net ilat tune time in a signal 1 and then tilen take two tao of hie the tubes from the and ri rome thein putting if 11 eni ein each in me tl of her as flot let keep on doln this in n var carbol loate wm com until iou hit on the particular that alies you the let hect l et result results long aerial necessary foi your crystal set A cra coelia alstat de detector let set should hae e ii ton conr aerial for the crettal detector dete cor relie lies exclusively on the strength reneth il of th tilt signal for its it operation us as li it hai has no local battery to eslet it ali tilt round pounds beard in thi telephone are re UK use of lie itte actual fief till cifald after by the thill cry crys tal the looter longer the aerial li is within certain limits the better the 1 should be on the crystil detector detec tot |