. The Bell System technical journal . ,r f\r\ ^ / 1 / X ^ Arft7-V V ^ ^ 6-26-30. Fig. 9—-Magnetic storm effect, oscillograms of received carrier. lication, the rapid variations which are characteristic of fading havebeen eliminated and only the slow drifts are shown. It will be seenthat the effect of the storm became evident on June 26, the averagesignal being 15 to 20 db lower than the preceding day. This conditioncontinued on the 27th and 28th, on the 30th the signal averaged a littlehigher, and on July 1 a recovery had set in. The incompleteness of 25cS BllLL SYSTEM TECHNICAL JOURNAL the re
. The Bell System technical journal . ,r f\r\ ^ / 1 / X ^ Arft7-V V ^ ^ 6-26-30. Fig. 9—-Magnetic storm effect, oscillograms of received carrier. lication, the rapid variations which are characteristic of fading havebeen eliminated and only the slow drifts are shown. It will be seenthat the effect of the storm became evident on June 26, the averagesignal being 15 to 20 db lower than the preceding day. This conditioncontinued on the 27th and 28th, on the 30th the signal averaged a littlehigher, and on July 1 a recovery had set in. The incompleteness of 25cS BllLL SYSTEM TECHNICAL JOURNAL the record on three days is caused by the transmitting station shiftingto a different frequency in an attempt to improve conditions. As tocommercial transmission results over this channel during this period:the first two days were fair, the third day poor, the 27th, the 28th,29th, and 3()th very poor, and July 1 still rather poor. The Problem ok the Transmitting Medium These adverse effects in short-wave transmission are ascribed tothe nature of the medium through which the propa
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
