[RadioAstronomer]

There may be a window of only a hundred years or so in which a civilization is advanced enough to put out a detectable signal but not enough to make full use of bandwidth.

Indeed for the present. However, to communicate across the solar system we will require higher-powered carriers. So there may be a temporary lull instead of a total lapse of high power carriers as we expand thru our solar system. All SETI is doing is looking for that CW carrier. We are not looking for information at all.

[OBAFGKM]

"All SETI is doing is looking for that CW carrier."

That's the problem -- how can we know that a carrier is there? Spread spectrum broadcasting makes good use of bandwidth, but it's almost impossible to detect over noise.

I'm all for SETI, but I think it may depend on someone trying to get our attention.

[OBAFGKM]

"All SETI is doing is looking for that CW carrier."

That's the problem -- how can we know that a carrier is there? Spread spectrum broadcasting makes good use of bandwidth, but it's almost impossible to detect over noise.

I'm all for SETI, but I think it may depend on someone trying to get our attention.