Show two hookups that will interest experimenter in the diagram figure I 1 the lie antenna coll coil may be a single slide tuner or any other conductance with a few tops taps it Is not in inductive relation with the secondary roll coil coupling Is effected ly by means of the two variable condensers these may OX A 2 may bo be arranged so one dial will actuate both condensers be arranged so that one dial will actuate both condensers but only those with mechanical ingenuity will care to make this arrangement A condenser and variable grid leak are suggested for the grid circlet clr cir the secondary coll coil may be tiny any standard inductance such as a 75 turn honeycomb coll coil or the secondary ot of a standard the latter la Is suitable since the variable condenser Is then already attached II if this Is done the primary of the neutro former would not be used regeneration Is effected by a honeycomb coll coil or 01 rotor bull ball nr arranged ranged in inductive relation to the secondary coll coil as shown still another method would be to insert ingert a varl ometer in the plate circell to produce regeneration with the arrangement shown in fig ure tire 2 sonie some of the stronger powered sto station tion can be brought in nicely on a loop no it II F amplification Is used except that derived from the re genera tle tive properties of the tube the loop should he be it a good sized one with 11 14 turns tapped at the fourth turn count T ja I 1 jap I 1 d 0 AW J some stronger powered stations can be brought in on loop ing from center to this tap connect the negative filament return if a grouted ground Is used connect at this point also if volume Is insufficient core con act cl au alterina terina at inside inaldo terminal grid con denci and leak should be of capt ty the tuning condenser for the loop has a capacity of A good low loss varl ometer should be used in the plate circuit or a tickler may be used in connection with small grid coupling coll coil connected at point marked X new york sun |