We all need to listen to Frank Drake (founder of SETI) on this one. We are not ever going to detect any alien communications (unless they are specifically targeted at us with that intent). We have a hard enough time talking to Mars: that whole 'Sun' thing makes for a terrible SNR. Not only that, but broadcasting high-energy analog signals is extremely wasteful. Humanity had about a 50-year period where we did this. Now, as you say, we use waveguides. We also don't send anything in analog form any more. Digital data that you don't know how to decode tends to look an awful lot like noise, even without being encrypted or compressed.
What SETI is doing is completely pointless, even compared to cryptocurrency mining.
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We all need to listen to Frank Drake (founder of SETI) on this one. We are not ever going to detect any alien communications (unless they are specifically targeted at us with that intent). We have a hard enough time talking to Mars: that whole 'Sun' thing makes for a terrible SNR. Not only that, but broadcasting high-energy analog signals is extremely wasteful. Humanity had about a 50-year period where we did this. Now, as you say, we use waveguides. We also don't send anything in analog form any more. Digital data that you don't know how to decode tends to look an awful lot like noise, even without being encrypted or compressed.
What SETI is doing is completely pointless, even compared to cryptocurrency mining.
Nice ....!