On 2/07/2012 10:43 PM, Jeff Findley wrote:
In article 529ee44e-f348-4443-a0fa-
, says...

On Jul 2, 7:59 am, Alan Erskine wrote:
On 2/07/2012 9:06 PM, bob haller wrote:



We have been broadcasting our presence by radio and tv for how many
years?

not only would ETs know we exist, but lots about our actions Wars
etc.........

i wonder how far the futherest radion waves have traveled by now?

putting it another way, if we were the ETS would we want to go meet
people liker ourselves?

As has been said many times before, the signals we have been sending out
are very low power and therefore very short range. It wouldn't even
reach the nearest star outside our solar system.

thats assuming the ETs receivers are no better than our own........

It's all of the background noise that would be a problem. Even if they
could amplify the signal, they'd also amplify the background noise.

Physics. Learn some.

With a suitable (this is big directional) antenna, they can achieve a
sufficient signal to noise ratio.

However, the more directional the antenna, the more difficult it is to
pick anything up by chance.

Sylvia.