. Radio for everybody; being a popular guide to practical radio-phone reception and transmission and to the dot-and-dash reception and transmission of the radio telegraph, for the layman who wants to apply radio for his pleasure and profit without going into the special theories and the intricacies of the art . tuning. Second only to the development of the vacuum tube, theconcentrated inductance has marked a new era in to the war there were in general use the huge, bulky,single-layer inductance coils then so closely identified with long-wave recep-tion. Compact re-ceiving sets, sim
. Radio for everybody; being a popular guide to practical radio-phone reception and transmission and to the dot-and-dash reception and transmission of the radio telegraph, for the layman who wants to apply radio for his pleasure and profit without going into the special theories and the intricacies of the art . tuning. Second only to the development of the vacuum tube, theconcentrated inductance has marked a new era in to the war there were in general use the huge, bulky,single-layer inductance coils then so closely identified with long-wave recep-tion. Compact re-ceiving sets, sim-p 1 e adjustments,and the neatnessthat goes withsmall units, werenot to be thoughtof because of thebulkiness of theinductance thenemployed. The demand forcompactness andsimplicity, to-gether with thefar greater effi-ciency and prac-ticability, on thepart of the war-ring nations, called for a radical change in inductance de-signs. As a consequence, so-called bank-wound coils wereemployed to an increasing extent, followed soon after bythe present types of concentrated inductances. Todaypractically all receiving sets with a long-wave capacityare provided with these compact inductance units since along wave length can be obtained in a very small mountings have come into use for these compact. One style of mounting which takes two orthree compact inductance coils for a loose-coupler, and tickler coil combination whenusing a regenerative circuit. RADIO FOR EVERYBODY 133 inductance coils. The usual method is to mount the coilson a block by means of a fiber band which passes aroundthe coil to hold it in place. The block, in turn, is providedwith bayonet plugs so that it can be readily plugged intoa circuit. A loose-coupler arrangement is effected bymeans of a stand which permits of moving the coilstowards or away from each other, and, in some cases, eventurning one of the coils from the vertical to the horizontalposition. Another form of compact inductance is known as th
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Keywords: ., bookcentury1900, bookdecade1920, bookidradioforever, bookyear1922
