Show two hookups that th a t will interest experimenter in the diagram figure 1 the antenna coll coil may be a single slide tuner or any a ny 0 ther other conductance with a few taps it ts is not in inductive relation with the secondary coll coil coupling Is effected by means of the two variable condensers these may 01 vrem A axi jill 0 may be arranged so one dial will actuate both condensers be arranged so that one dial will actuate both condensers but only those with mec mechanical hartlen Ing ingenuity emilty will care to make this arrangement A condenser and variable grid leak are suggested for the grid clr the secondary coll coil may be any standard inductance such as ni a 70 turn honeycomb coll coil or the secondary of a standard the latter Is especially spec fally suitable since the variable condenser Is then already if this Is done the primary of the neutro former would not be used Ile regeneration genera ls Is effected by a honeycomb edit or rotor ball arranged in inductive relation to the secondary coll coil as shown still hlll another method would be to insert a varl ometer in the plate circuit to produce regeneration alth the arrangement shown in figure 2 some of the stronger powered stations can be brought in nicely on a loop no R F amplification Is used except that derived from the regenerative properties pro pertle of the tube the loop should be a good one with 11 14 1 1 turns tapped at the fourth tt turn irn count some stronger powered stations aan can bo be brought in on loop ing from center to this tap ani connect the negative filament return if a ground lg Is used connect at this point also if volume Is insufficient vonne connect ct antenna at inside terminal grid condenser and leak should ile be of capacity the tuning con condenser denger for the loul loui has haa 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 grio grid coupling coll coil connected at point marked X new york sun |