Word: video
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Dates: during 1930-1939
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...liking, three engineering obstacles stand in the way of regular U. S. television service, 1) Present television standards are tentative. Improvements might bring standards that would make current equipment obsolete. 2) The entire basic mechanism of television might be changed. 3) Either the effective range of television's video wave must be lengthened beyond the present so-mile radius or the band of wave lengths needed for a television station must be reduced radically to solve the problem of wavelength congestion...