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- The dawn of amateur radio in the U.K. 收音机雏形的诞生。
- A licensed amateur radio operator. 火腿族有许可证的业余无线电的爱好者
- Most amateur radio operators build their own equipment. 大多数无线电业余爱好者都是自己装机子。
- Promote Amateur Radio Communication, enhance skills and technology. 推广业馀无线电通讯,提高操作技巧及技术水平。
- RF Radio Frequency Level Controller. RF系列射频导纳式物位控制器。
- What is BPL, and why is it a possible threat to Amateur Radio? 什么是BPL,为什么它可能会影响到业余无线通信?
- Radio frequency and communication test equipment. 射频通信综合测试仪。
- You can even operate Amateur radio while receiving FM broadcasts! 也可以在操作业余电台之余守听FM广播。
- Radio frequency circuit design II. 射频电路设计2。
- Low power amateur radio transceiver is in urgent need to radio amateur. 低功率业余无线电收发信机是业余无线电爱好者们急需的低功率通信设备。
- More than 355,200 Americans hold licenses as amateur radio operators. 355200名美国人持有业余无线电台工作执照。
- Vulnerable to radio frequency radiation interference. 易受射频辐射的干扰。
- Tuner will be able to track the frequency-hopping radio frequency. 调谐器可以追踪跳频无线电频率。
- Internal capacitors to suppress radio frequency interference. 内置抗电磁干扰电容。
- Transmission can be done by cable, radio frequency and satellite. 传递可通过海底电缆,无线电波和通信卫星来进行。
- The AGC technology in the radio frequency channel is also studied. 研究了射频信道中的自动增益控制(AGC)技术。
- Method of insertion loss measurement for radio frequency filters. 射频滤波器插入损耗的测量方法。
- As they were both amateur radio enthusiasts,they were able to keep in daily touch (with each other) over the air. 因为他们两个都是无线电的业余爱好者,所以每天都能通过无线电波与对方保持联系。
- Is rhinitis of cure of microtherm plasma radio frequency good? 低温等离子射频治疗鼻炎能好吗?
- As they were both amateur radio enthusiasts they were able to keep in daily touch(with each other) over the air. 因为他们两个都是无线电的业余爱好者,所以每天都能通过无线电波与对方保持联系。