搜索 - 科创

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我看了点抛物面天线的教材，都是用波动学原理，几何图形来讲解的。和光学一样的呀。引用第32楼hamdad于2009-05-28 13:55发表的 :原文作者提到的内地不允许私人安装SATTV接收设...

这个方案实际使用存在比较多的问题：使用了不受控的第三方转发服务，涉及流量出境和再入境，带宽和延迟都有明显的损失，可靠性存疑。在路由器之外实际增加了一台物理服务器，但是却没有获得应有的性能。使用了疑似存...

通过前面的介绍，很多业余无线电爱好者对卫星通信应该已经熟悉了。或许，他们开始尝试“打卡”每一个没有通联的Maidenhead区块坐标或者像短波爱好者一样尝试远距离通信。长时间的卫星通信，爱好者会越来越...

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