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技术多如牛毛的无线电爱好者,让无线电频率成为稀缺资源。不过,现在一种新的技术思想可能给拥挤的频道来个大扩容,而且很容易实现。
Skilled radio enthusiasts make radio frequency a scarce resource. However, a new technical idea now may be to a large expansion of crowded channels, and it is easy to achieve.