Show DO NOT DESPISE CRYSTAL DETECTOR it Is dependable and cheap and every amateur receiving set should have one considerable there them Is in considerable to know abbit the crystal and a little knowledge will within noble the operator to get better re increased smile salts and bring increased respect tot for ha hi instrument I 1 there them are am many rea me on for the longing of the werner owner of a crystal receiving set tor for the vacuum vaccine tube tuba an outfit fit however he be be bai a great advantages many advantages advant agea which the owner of the tee fin more expensive outfit does not pos poll som for instance the crystal reproduce that of the radiophone one broadcasting Is ot of the best beat claral possible quality the ac 1 tion ban being only rectifying rectify ing there them Is no chance of distortion the tube receiver to some intent Ir tent eat it if abor boung milliliters regeneration if is used even been though the tule tithe I 1 Is not 91 lowed to oscillate di distortion la Is bound to result transformer or choke coll coil betheen amplifiers do BO grid him or wrong grid rid bias poorly watched matched tubes and transformers transform era or bad load laud talker will all cause distortion A combination of at formal of these ottea MO causes very great distortion when the crystal re receiver celver 1 la out of commission it don does not take a genius 0 o locate to the trouble no and ad the ore am simple A burned out cut tube means mean our or more for far an other A bad crystal me meana a little S I 1 dij z FJ J trouble rouble to em clean it up or at the worst n dime for a aon new one the 2 crystal must bet at does not go out of commission assion pe period indy as the tube set act it aws a aue ti orn out mt batt battery Y ww the a crystal bet f ta quiet I 1 in action at doing adding no ad noise 0 of f itself as do many of ih the detector fee tube reception through static c la Is nearly always more unity easily accomplished it with a crystal the atiland atmospherics series seem acen to be brought in all out ont of proportion to the bigna by the tube defect detectors ors while the er costal stal seem to damp out ont tie the high voltage peaks of the static or strays to some mine extent tent leaving the signals signal which are am wong enough tor for it to rectify budi audibly bly very frery el clear TP crystal net bet be has numerous mill did ad agn of course but so has the wit vacuum am tube tub and the good points of tile the former at greatly overbalance its faults it la is not at very cry stable ft a slight blight jar often being suf sufficient ficle h I 1 to knock hooch out not I 1 good food point there 1 Is ao a way 1 in which a crystal may be made to amplify and it does hot bot give sure I 1 tent signal fairba abron strength ath to nee wl with t h ft a loud land talker it a unity us broad brand tuning timing which makes it it difficult to two tune out interference I 1 it 1 1 not so as sensitive to f faint hat lenal fl be it the vice vacuum rawn tube although it is 1 surprisingly agn prot prop erly arty adjusted adjusting the er crystal stal is i a tedious taek to it a and ad it has ban become espe chilly no an since the labor vacuum tubes have be become 0 a BO all numerous A crystal dc detector t should id Is he included 1 in every meet receiving g mt bet it 1 ie depend able his cheap and ad takes take up ap little space palo even though you have anem re a t w tap am ill and a loud land taller talker with all the tr 1 an you out will ill admit that there them are am u numerous merma times when your 1 re adiv calver ce alls IB out mt of commission because ot at a bad A or B buttery battery dead tube tub at 01 man 11 1 1 lu aue ut at a of your r apparatus during the itie ie par tat tall lapses there la IS usually name gome talk that van TOU like to imo hae heard or a particular 1 1 bonceil A cristal delela dc lela t ir n III fill in these blank deiy nell fell and ad ou an will 11 be malli surprised alord at th the quality of 1 the music mile our broad ar a sending ding out when wan n you hear it via the tha 11 ml instead of at the tha noisy jay euil 4 of two anop lifer stony many 0 of r the on Bo called of the chatal stal detector no can be partially partia Hj overcome me c crystal rec civera usually I 1 broad brand ly that is I 1 M s a small chaffie 1 in tuning d doea not mat cause u as a e ery great change in signal strength fand ad a u be heard rd over quite a rous ranee go of f 2 hh g ahls menna means that if two mo stations are am sending and their aare are lengths are not very fur far upon apart it ft will be to tune tube one me in rod and exclude the ot other her her vair it if tile the receiver tunes sharply a station will be heard over a very nirna band of wave lengths another in other words K very few degrees either way ha aiom the point where the best addal ability 1 Is obtained will sill to tune tile station out than some mine selectivity can be had between two stations even it if separated separate I 1 only IF tr by it few fair meters mcce with ft all sharply pill tuned receiving mt bet the crystal I 1 in the usual hookup introduces introduce re resistance greshom into lot the it lating elm elmit circuit it musing causing that circuit to on be somewhat hat aper lodic that 1 to it vill rill respond to more man than oure one length it Is rather land hard to t anne do a sharply with crystal and a single tun og coil 1 I in IB this case the crystal must b be shunted across at I 1 least I 1 a part of oe V inductance bind and thre there I 1 Is no fay ft ay of keeping beeping it entirely out of any of ad the be circuits which may be used in order to keep it as sharply tuned a as possible it Is best beat to reduce the number of turn shouted bunted by the deter detector tm circuit as low law as a possible pos filble without witts tt sacrificing too much signal it if the dr clr colt alt hown him in I 1 bi rig I 1 a used it the umber number of turns between betwee ll slider I 1 t an and ground should be ba kept lees it then the a third of the nin aller between slider I 1 and ad gr ground it this will allow th the an I 1 tenna circuit to oscillate much more mom f freely fly ly at its natural pid period IS if using as a 0 single varl ometer better tuning may be had by tapping oft off tile detector clr cult an in fig 2 about three fourth th of the stationary coll call of oc the learned instead of hoeung it the entire inri url ometer the loose coupler 1 la very much to be preferred mer either of ill these t t two wa tun fun i ing scheme the mo cl snits culta are loosely coupled to each other by india tion and both circuits vill be b e a higher resistance to say filly in but of B the wilm length 1 to which they are tuned each curb tend tending ing to damp out the indent red signal the crystal Is coming causing rather rather broad brand tuning in the merandy merand second try y circuit but the antenna to circuit with mith it if la Is rather broad in low real Is 1 left led to oscillate and abd mill be sharply tuned tid will ace exclude abelind lind to a small great extent signals signal on any but the dei desired fire wit wave length the these signals 1 it if in dued dared into the Y et all 1 be greatly neak ered ned the condary Ke though turnstile tuned will etall have a i greater refill resistance time to say any signals not at on on its it own ban natural nave length the 71 secondary dy circuit con be amne hill more in re selective by eur tying out mt the th same a as in the thild ano in fiam es that that la 1 by connecting the crystal cry W across only a part of the circuit sharp found cannot a at be obtained fill oni military oid inary outfit between local station even with will a vacuum tube deter detec tor fair it even is almost with a crystal but can be done with a tube tub outfit lilt by 1 I very cry coohe coupling I 1 to the wi antenna circuit or by using a loop to pick up oil tile the |