Unlike satellite radio, which is a subscription-based service, the contt on HD radio is free. Consumers do need to purchase a special radio receiver to pick up the digital signal.
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释义
然后卫星广播提供的是一种收费的订阅服务,然后高清晰无线电是免费的。消费者只需要购买一种特殊的接收器来接收数字信号。
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