| 2. | Besides the more obvious broadcast , emergency and mobile radio services there are cellular and cordless telephones , radar , garage door openers and other remote controls , telemetry , and amateur and cb radio
无线电频谱除了广播频段，应急通信频段和移动通信频段以外，还包括蜂窝电话、无绳电话、雷达、遥控器、无线电爱好者和民用频段。 |
