. The Bell System technical journal . onof this transmitter during the summer of 1927, TRANSATLANTIC RADIO TELEPHONY 333 It is seen that the agreement between the measured and the com-puted directional characteristic is much better for the shortened Houl-ton A antenna than it is for the same antenna kilometer longer. > 0,8 I- Q. 1^ _i Ct ^^ V -- -HORIZONTAL EFFECT ONLY _i-nk/ioi iTPn niDcrTiriMAi i-u ad ArrcDiciTir ^^ LENGTH = KM. HEIGHT ABOVE GROUND= KM ANTENNA DIRECTION = N7I° OW FREQUENCY = 60KC. CHARACTERISTIC IMPEDANCE=— OHMS ATTENUAT
. The Bell System technical journal . onof this transmitter during the summer of 1927, TRANSATLANTIC RADIO TELEPHONY 333 It is seen that the agreement between the measured and the com-puted directional characteristic is much better for the shortened Houl-ton A antenna than it is for the same antenna kilometer longer. > 0,8 I- Q. 1^ _i Ct ^^ V -- -HORIZONTAL EFFECT ONLY _i-nk/ioi iTPn niDcrTiriMAi i-u ad ArrcDiciTir ^^ LENGTH = KM. HEIGHT ABOVE GROUND= KM ANTENNA DIRECTION = N7I° OW FREQUENCY = 60KC. CHARACTERISTIC IMPEDANCE=— OHMS ATTENUATION = TU PER KM. VELOCITY RATIO = EFFECTIVE HEIGHT = KM. ig^g \ \ v \\ \ \ v \\ \ \\ y ^^ ^ \ \ / \ ^N / \ V^ / - *- ^^__ :::: — 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 360 350 340 330 320 310 300 290 280 270 260 250 240 230 220 210 200 190 180 ANGLES OF INCIDENCE (e) — DEGREES Fig. 8c—Relative Directional Receptivity of Wroughton, England—South Antenna. HORIZONTAL EFFECT ONLY COMPUTED DIRECTIONAL CHARACTERISTIC LENGTH = KM. HEIGHT ABOVE GROUND = KM. ANTENNA DIRECTION = N 78 13W FREQUENCY = 60 KC CHARACTERISTIC IMPEDANCE = —J 174 OHMS ATTENUATION = TU PER KM. VELOCITY RATIO = EFFECTIVE HEIGHT = KM.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
