. The Bell System technical journal . U to TELEPHONE TRANSMISSION OVER LONG CABLE CIRCUITS 81. 3 0 J3 82 BELL SYSTEM TECHNICAL JOURNAL is shown between the repeaters transmitting in the two directions,since to keep the conductors carrying weak power separated fromthose carrying strong power, it is merely necessary to keep the ap-paratus and cabling connected to the inputs of the repeaters separatedfrom the apparatus and the cabling connected to the repeater outputs. V. Steady State Distortion The possible sources of distortion may be divided broadly into (1)repeaters and auxiliary apparatus an
. The Bell System technical journal . U to TELEPHONE TRANSMISSION OVER LONG CABLE CIRCUITS 81. 3 0 J3 82 BELL SYSTEM TECHNICAL JOURNAL is shown between the repeaters transmitting in the two directions,since to keep the conductors carrying weak power separated fromthose carrying strong power, it is merely necessary to keep the ap-paratus and cabling connected to the inputs of the repeaters separatedfrom the apparatus and the cabling connected to the repeater outputs. V. Steady State Distortion The possible sources of distortion may be divided broadly into (1)repeaters and auxiliary apparatus and (2) the lines. With reference to the distortion introduced by the repeaters, thevacuum tube is fortunately very nearly perfect, at least in so far asconcerns practical telephony. At one time, for purposes of test, acircuit was set up containing 32 vacuum tubes in tandem. On thiscircuit the distortion was so small that when listening to ordinaryconversation it was difficult to detect any difference in the qualityof transmission before and after traversing the 32 vacuum tubes. It is beyond
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
