| Show X AW V on T T P C 12 L V B AT RIES hookup hook up diagram of two tube low loss Rec ilver which has selectivity volume and lack of radiation advantages by ISRAEL KLEIN selectivity vol volume tinie and luck lack of null allon tire anro the advantages offered ly by ahe ali ano tuh low lov loys loss receiver do d fc albed lien here pons t expect to rench across itie ilie country fill it but with the presence of so ninny many high powered stations on tit lie air there s no need to go any birther than linn miles or so BO its clear ness BOSS that lint in IH anted today nud find that Is amt this ree receiver elver affords the ilie pints parts tire 11 12 12 11 13 low losh indik 1 low loss losa condenser niad 2 fixed grid ald condenser niad N I 1 s 0 leak li 14 necessary va ld fixed condenser con denaer niad it II rheostat 20 T 1 low lo 10 ratio transformer about 3 or oi 4 to 1 one lie pound no IS 18 mire two 0 o sockets one 7 hy 1 14 inch panel annel one 7 in by 13 inch im li Imse board one lie open clr lilt jack six 81 binding viosta one vernier winding th the a colls coils the lie low lo 10 losi liss inductance u oils coils tire nrc wound annd us fig follows follow B drinan circle on oil a wool IIo block cli 11 indies inches in ili diameter at rand ennik 11 points the lie dide equidistant front from one ne it nother drill yi bnell holes hilla wily HV into tile the lilick block nad set into ali ench hole it ii i indi inch doiel pin 3 indies inches lone iong the 1 lie oils tire nie wound on liepp pins tin the avire lr heing ddn drawn ali list st outride side one pill I 1 in thell inida two to oil aiu tit in hide two to tin and so on until file nin tiller i of ivin windings dIngs eclied foi fill tire lire complO completed ted coil oil LI IA should line have 15 I 1 turn lull coil 12 70 turns euins coll coil 13 I 1 22 turns tin us before it coll coil off tile lie pegs drop molten sett sealing ilag wax over the in fer sections and let stand until tile lie wax hardens or tie the colls coils at the intersection ter with stout thread for selectivity colls coils ll LI and nd 12 are mounted on the baseboard parallel to each other and four inches apart the bottom of each coll coil Is set within two fiber strips which are held together by a screw ille screw also holds tile the coll coil anti and strips to the buse baseboard board coll coil ia 13 I a Is the tickler and Is IB controlled by a shaft arrangement tile the shaft and knob should be set very low on the panel so that the coll coil 13 mav be tied firmly to it so as to give it freedom of vibration with coll coil 12 it should be nebout an inch front from 13 to keep the shaft front from moving in nail and out have a hole bored through it tit at the lie inside of tile the panel and put appt a pin through it tills a and ad tile the dial A all PI hot hold the shaft in ili place the bushing for tile the shaft tit in the panel may amny bo be the kind hind used for jacks and the shaft of it a dla diameter niMer to it fit it closely test connections poth tubes for tills this set should he be of the lie A type tile the it hattery lint pry should lieve it a volture of go 00 volts and the lie 0 battery 41 11 volts lit in trying tryl iii out the sot set chonge the leads on oil tile tickler ll 11 to see which side gives 1 best t results also reverse lends leads to the lie C hattery battery fur for a similar test above till nil lie he sure that lint you yon have tit the shortest poss possible lido lends leads to till nil connections also lint the lie colls coils II IA 11 and 12 12 are four apart 1114 1 makes for very sharp tuning chicago evening post |
