他们实验了各种已知的传播介质，甚至尝试了业余无线电、警用对讲机、手机等多种替代方案，但无论哪种方案，都无法建立起不受静电干扰却又能传输如此多样信号的连接。
They checked every known communication media, including ham radio, police walkie-talkies and cellular phones, as alternatives, but all failed to find a static-free connection for such diverse signals.
他们实验了各种已知的传播介质，甚至尝试了业余无线电、警用对讲机、手机等多种替代方案，但无论哪种方案，都无法建立起不受静电干扰却又能传输如此多样信号的连接。
They checked every known communication media, including ham radio, police walkie-talkies and cellular phones, as alternatives, but all failed to find a static-free connection for such diverse signals.
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