搜索 - 科创

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做了一个FM带阻滤波器和一个137MHz带通滤波器，原设计来自外国的一名无线电爱好者。我在我之前的文章（铁棍DIY一个正V天线接收气象卫星信号）的回复中有提过，所以就不再赘述。原理图中间也有相关的链接...

二氧化氮：一：Cu+4HNO3=Cu(NO3)2+2NO2↑+2H2O 二：2NaNO2+2HCl===NO2+NO+2NaCl+H2O　（亚硝酸钠加盐酸）三：硝酸铜在170°C左右分解为氧化铜 ...

信息收集可以用ArduinoNano 够小然后可以加上气压计和陀螺仪和GPS 然后保存SD卡然后顺便无线电传输一份回来能地面遥测

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