why don't we "hear" ourselves?

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Tom Philippart

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Message 1001331 - Posted: 6 Jun 2010, 18:40:54 UTC

When the news about voyager sending garbage messages came up recently I wondered why doesn't SETI detect voyager's transmission the earth?

Voyager's messages are targeted to earth so we are supposed to notice them...

I'd like to know why we are not hearing voyager.

Thanks


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Message 1001337 - Posted: 6 Jun 2010, 19:27:44 UTC - in response to Message 1001331.

yes we've heard back from voyager. I dont recall the last "bleep" that was sent our way but it still appears to be operating. Though I do recall reading that the nuclear4 fuel that was supposed to warm the hardware was running low and this would eventually would cause the probes systems to fail


Heck I went ahead and googled. Remember google is your friend


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Josef W. Segur
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Message 1001355 - Posted: 6 Jun 2010, 21:04:17 UTC - in response to Message 1001331.

When the news about voyager sending garbage messages came up recently I wondered why doesn't SETI detect voyager's transmission the earth?
...

Because voyager doesn't transmit on a frequency near 1420 MHz.
                                                                Joe

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Tom Philippart

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Message 1001359 - Posted: 6 Jun 2010, 21:39:16 UTC - in response to Message 1001337.

yes we've heard back from voyager. I dont recall the last "bleep" that was sent our way but it still appears to be operating. Though I do recall reading that the nuclear4 fuel that was supposed to warm the hardware was running low and this would eventually would cause the probes systems to fail


Heck I went ahead and googled. Remember google is your friend


I asked why seti doesn't hear it.

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Tom Philippart

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Message 1008671 - Posted: 26 Jun 2010, 17:42:49 UTC

hmm I've we're not even listening to everything we're sending in space, how are we supposed to find the alien signal...


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Message 1009771 - Posted: 29 Jun 2010, 15:17:24 UTC - in response to Message 1008671.

... how are we supposed to find the alien signal...


That is where we make "best guesses" as to what an alien would do if they wanted their signal to be heard and recognised. Hence all the assumptions for searching around the "water hole".


Our tech and resources are far far too limited to do anything better at present.

Meanwhile, there are some good spinoffs and other discoveries...


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Message 1014503 - Posted: 10 Jul 2010, 23:33:40 UTC - in response to Message 1001331.

When the news about voyager sending garbage messages came up recently I wondered why doesn't SETI detect voyager's transmission the earth?

Voyager's messages are targeted to earth so we are supposed to notice them...

I'd like to know why we are not hearing voyager.

Thanks

Which SETI project?

SETI@Home does not listen to the frequency Voyager transmits on, nor does the dish they use point in its direction.

As a real system test I'd like to see them use a receiver at the frequency of an interplanetary probe and sweep the dish over it a couple times just to be 100% sure the entire chain all the way through to NTPCKR flags it. That just to supplement the software injections they have done to system test it, not that I suspect anything wrong.


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Message 1015333 - Posted: 13 Jul 2010, 13:31:54 UTC - in response to Message 1014503.

As a real system test I'd like to see them use a receiver at the frequency of an interplanetary probe and sweep the dish over it a couple times just to be 100% sure the entire chain all the way through to NTPCKR flags it. That just to supplement the software injections they have done to system test it, not that I suspect anything wrong.


I like that idea. The ISS could transmit a test message pretty easily.

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Message 1015352 - Posted: 13 Jul 2010, 14:28:05 UTC - in response to Message 1015333.

I think he was thinking of something a bit more distant than just outside the atmosphere.


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Message 1015376 - Posted: 13 Jul 2010, 15:34:03 UTC - in response to Message 1015352.

I think he was thinking of something a bit more distant than just outside the atmosphere.

Yes, something that would have an expected doppler shift for something not in earth's gravity.

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Message 1015560 - Posted: 14 Jul 2010, 13:02:30 UTC - in response to Message 1015376.

I think he was thinking of something a bit more distant than just outside the atmosphere.

Yes, something that would have an expected doppler shift for something not in earth's gravity.


So, then the moon wouldn't count either? I suppose they could put something on Mars if properly designed for this purpose.

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Message 1015573 - Posted: 14 Jul 2010, 13:54:17 UTC - in response to Message 1015560.

The Cassini probe consistantly sends data back from Saturn and the New Horizons probe no problem sending back info on its way to Pluto. Perhaps someone should look into these


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Message boards : SETI@home Science : why don't we "hear" ourselves?


 
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