Show ux 8 U or I 1 I 1 VI tr F bladl mor bendi 16 O 0 1 J circuit to die use in improved portable Rc Ro elver iver by 13 y K M from it I 1 I 1 it to whirl aich I 1 limn received 11 the one control lor table set coppins to have met inet with still inaudi finer favor by eliw who follo followed aed the instructions and built the instrument one reador that within nn an hour after he lie finished reading HIP flip details he lie lind had completed file hi set and within ten min utti utes from that time tinie he lie wai as listening to philadelphia find this till in from the local locals one trouble that a few experiment era tr experienced wai as getting flip met ct to regenerate this if Is due entirely to the th wiring the connection connections to the two colli coils and the aerial and ground aut have a definite relationship to let get them juit just right t urther furthermore more both coll coils must he ile wound in the lame some direction if these condition conditions are not met with uie the net met will operate limply simply as a ingle single tube two circuit non conre re generative ae As uch such the concert concerts will ill be clear but faint and the selectivity will not he be ai as KOOI assuming that both colli coils are wound mound in the lame name direction the wiring should be b accomplished an a follow follows the round ground post should be bo to the end of the inside turn of the secondary the outside turn of the primary and nd to the positive 11 ilde side of the filament and A battery the aerial post hould so go inside end of the primary and the minus post of the R battery the outside end of the secondary hould should go to the grid rid condenser for those who live in to thickly con seated districts where here every little bit of radiation li Is to be shunned ai as rauch much ai as possible a it very compact little set of almost the same physical dimen loni giant as a the one described before con be made to all 01 the bilt 1 with but flight chance chante in either hook up or apparatus thil this variation A III decrease radiation considerably and at the same time help in the control of regeneration first lecure secure a variable condenser having a maximum capacity of from 0 to mad that has a single plate vernier attachment that works in the rear by varying a knob that runs through the center of the dial from this the vernier plates should be removed and in the place of the he original shaft a longer one of the same diameter hould should be provided that projects about an inch and a quarter in the back past the rear bearing thread about a half inch of each end of this one end for the vernier knob and the other for a couple of nuts and a spiderweb spider neb form the coll coil that goes on this title cliatt lit 1 the tickler and should be wound on R meb form three inches in diameter it consists of 43 turns tums of no 26 2 single cotton covered or enameled wire wound spiderweb fashion on the form A nut on dri the condenser side aide and a very thin nut on the other side will hold the roll toll se 4 w ad as M condenser coll coil and supports curtly to the shaft instead of the former rotary notion motion of the tile vernier the new shaft moves in anil and out oft when the coll coil has been wound and mounted the condenser and find icker tickler unit may be mounted on the panel in the usual manner next comes the primary and secondary colls there these are both wound or 3 in IL arms the primary coll const of 12 turns of no 18 cotton covered wire and the second ary consists of 60 50 turns of 0 o 20 00 A ire the rho mounting fer for these two coils la Is in to the form of a brackee made froia from a it strip of brass as its shown A machine machin crew screw through them with a nut between to separate them about a it quarter of an inch holds them la in place the bracket should be fastened fattened to the at tit a point that allows the tickler coil toll at its full extension to come as close as possible to A the coll coil vi without actually tolfe touching bint the secondary ml coil faces 1 tard third the condense condenser and the primary 14 I 1 ird 4 the rear of the base bam in n oper operation atlon this arrangement li Is itself the kimary Is U a por lolle and ri pol t n in anally well ncr ter it bond of autive it mgt I 1 a flit fhe mn andary dary in toned tuned en firely I 1 ay y the ondene ond hen flip tuning liui line noi biti guoin pila llie flip i amount nf of regen way may ti ile by flip in coll coil in and out the circuit liae han now three and the lie arc are diore easily null controlled and kept within the limit of lie tile set el however all ordinary regene rathe sets radiate to R certain extent and therefore tuning adjustments should be made ai its quick ly no io talle e keeping this in mind the tile pres loin little let set I 1 described des nut not radiate any more than any other sef sat after a station hai has teen jeen tuned in arid add there being only one adjustment the tuning ran can be IA rapidly that daring during this tuning work very little can get out nut into the ether to cause interference bat people hate hae personal pe preference preferences and foi for those who ho prefer a three circuit tune inner this present substitute unit lini line been suggested ug eted new york sun emergency soldering flame that Is useful by DR WILLIAM H mckie A tablet of m ethyl enam lne or to use an easier name uro will furnish an ideal soldering game in ao an emergency A ate tablet when lighted ankh ith a match will burn for two or three minutes with a steady pointed leee oot leea odorless blue will generate intent intense hot heat flume flame of an intense degree of heat the se seen en and ten rain tablets will burn proportionately longer co to 0 o the drug etore store and get 5 cent cents worth of flie crain uro tablet tablets and put them in four tool kit ithen when you break a wire or want to make a new connection and your soldering iron Is loaned or li is out of commission or if you do not want to tart start the blow torch juit just take a tablet toy it on apiece a piece of metal or ina in a toon spoon put your older solder and flux on the piece to be soldered light the tablet ai as you would a candle and hold it under the work you will be surprised how quickly the older saltier adli run and will be delighted at the clean perfect joint ben soldering ol dering in this atil manner cure care should be taken that too much flux la to not used as a it might drop into and put out or dim the soldering flauie flame iladio radio neui single circuit jack for A battery switch by 0 E having immediate need for an A battery nitch and not to wit until I 1 could set get a banitch ft itch fro arora to the wholes wholesale who leMie alf house I 1 utilized a iksic circuit jack for this purpose the tile ao ing drilling the tile method ethod on of ile ery clearly tod and little ali li Is needed I 1 used the rheostats in the negative lead in shift thi cne ind and carried the pol past the lead from the binding post of the tile A battery direct to tit the bottom bottem luf jug of the jack and the lead from the th princ prine to the terminal terminate of the sockets to clet I 1 had a shon arassi brassi erml of the propel proper alze axe to tri fit the hole for a stand standard tan dard artl plug all and I 1 threaded thia this v to at a round but to OL M INN A me wi if oct A 14 a switch from single circuit jack ton taken from an old flap ahe not as is good 1 aa the manu fae switches on the market it answered the purpose and the black twitch switch button did not detract from th thit appearance of the sel |