主要介绍卫星电视伴音副载波数据传输系统的组成，以及主要实现技术。

This paper introduces composition and realizing technology of satellite TV aural sub-carrier data transmission system.

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本文叙述PFM彩色电视双伴音传输设备的主要性能和应用。

This paper describes the major performance and applications of the PFM (pulse frequency modulation) optical fiber transmission equipment for colour TV programs with two accompanying sound channels.

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