PHPWIND
HELLOCQ
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内容来自Android手机客户端
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三剑:应题而已了,这个命题的一个重要条件是30RMB以内,且定位于五到六位LED的收发信机频率显示,考虑采用性价比极高的手机用TCXO,13MHz是常用频点,TB价2.50至3.00。
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三剑:试着做了个方案,大概画了个图,9.99999 MHz@精度10 Hz,64.9999 MHz@精度100 Hz,最高65 MHz,TCXO基准,高阻输入,成本30以内。[图片][图片]....... (2013-01-20 00:10)
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