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An effective bandwidth reduction for communication use in a VHF/UHF satellite link

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1 Author(s)
Weber, M. ; Forschungsinstitut für Hochfrequenzphysik Werthhoven, Germany

A new modulation system is described by which two voice and three additional teletype subchannels are to be interlaced within a frequency range of a usual standard phone channel. In general, economical aspects govern an effective bandwidth reduction for signal communication. This becomes extremely valid for all relatively narrow-band radio links via satellites in the VHF/ UHF range. With respect to a minimum of material expense, a compact band modulation system was successfully developed and tested in a satellite link. An adequately high intelligibility could be retained at the cost of some fidelity in voice communication.

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Audio and Electroacoustics, IEEE Transactions on  (Volume:17 ,  Issue: 3 )