这颗卫星上装有无线电收发设备和电源，可对信号接收、处理、放大后再发射，从而大大提高了通信质量。
Telstar is launched as the first "active" communications satellite—active as in amplifying and retransmitting incoming signals, rather than passively bouncing them back to Earth.
除了在画面质量和节目指南上得分颇高，Spica也是少数几款既能接入智能天线，也可兼容接收模拟信号的机顶盒。
Apart from scoring highly for picture quality and programme guide, the Spica was one of the few with both a connection for a smart aerial and a pass-through for analogue signals.
音响质量会非常差，部件必须挨得很近，接收器只能接收当地广播电台的强功率信号，还会存在其他质量问题。
The sound quality would be poor, components would have to be located very close together, the receiver could only pick up strong local broadcast stations, and still more quality issues.
应用推荐