无绳电话也是语音，发射功率超过一瓦，怎么不能传几公里？手机发射功率能高到哪去？也没看到用指向性高增益天线

来源: cowpi 于 2023-09-02 15:18:33 [旧帖] [给我悄悄话] 本文已被阅读：次

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