Abstract
VARIATIONS in attenuation of the cable conductors lised for the K-l carrier system are compensated by corresponding changes of gain under control of a pilot-wire regulating system ; Since these changes in attenuation are due primarily to temperature changes, and since all pairs in the same cable are approximately at the same temperature, a pilot regulation system- in which the gain over the various pairs is adjusted to conform to the temperature of one pair of wires in the cable-is a simple and satisfactory way of handling the regulation. There are, however, certain minor deviations from pair to pair for which such a system will not provide, and with long circuits over, say, some five hundred miles, some additional regulation will be needed to take care of these residual deviations.
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A Pilot-Channel Regulator for the K-1 Carrier System. Nature 150, 287 (1942). https://doi.org/10.1038/150287a0
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DOI: https://doi.org/10.1038/150287a0