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#240
by
jacqmans
on 08 Sep, 2006 13:54
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Go for closing the hatch !!
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#241
by
hoorenz
on 08 Sep, 2006 13:59
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ET will pass over your area once just before 1600 GMT, way too much daylight.
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#242
by
Wisi
on 08 Sep, 2006 14:02
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T-1 hour and counting... I'd say in this case no news is good news (regarding MMT)
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#243
by
kneecaps
on 08 Sep, 2006 14:02
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I was always under the impression that the shuttles audio was multiplexed into a digital datastream (with telemetry) which was then sent to ground. If not I have a high end scanner and roof aerial that has been missing shuttle voice passes for years and I'm going to try!:D
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#244
by
Boston Shuttle Head
on 08 Sep, 2006 14:02
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William Harwood (CBS) has posted that the MMT has called off countdown today and will postpone launch for 24 hrs. Certainly seems to fly in the face of what we are seeing here. What gives?
CBS News Mission Status Report
a.m., 09/08/06, Update:
NASA's Mission Management Team called off the shuttle Atlantis' countdown today and delayed launch at least 24 hours because of concern about an apparently faulty low-level hydrogen fuel sensor in the ship's huge external tank.
It's not yet clear whether NASA can resolve the matter in time to make another attempt Saturday or whether the long-awaited and oft-delayed mission will slip to late this month - or next - because of a daylight launch constraint and conflict with a Russian mission to rotate crews on the international space station.
http://www.cbsnews.com/network/news/space/current.html
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#245
by
ianeck
on 08 Sep, 2006 14:04
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cabin leak checks being performed..
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#246
by
Chris Bergin
on 08 Sep, 2006 14:05
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CBS' Bill Harwood would know, so that's bad news. Nothing official or notes yet. NASA is still proceeding, but the MMT may take time to inform.
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#247
by
jacqmans
on 08 Sep, 2006 14:06
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Hatch is closed for flight...
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#248
by
hoorenz
on 08 Sep, 2006 14:07
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Well... make that: hatch is closed.
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#249
by
psloss
on 08 Sep, 2006 14:12
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No hint about a final decision from PAO George Diller, they're running a payload processing tape right now.
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#250
by
backspace
on 08 Sep, 2006 14:12
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Could be Bill Harwood prepping his story in case MMT says no-go... like those advance obituaries CNN has had in the past...
But not certain. Spaceflightnow not logging it yet.
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#251
by
Chris Bergin
on 08 Sep, 2006 14:14
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Given the site is very busy, I don't want anyone posting, unless it is a news update.
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#252
by
Bubbinski
on 08 Sep, 2006 14:14
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I'm surprised they would have the hatch be closed and then call a scrub for this issue if they were discussing it for several hours before crew ingress. I would think the decision would be made before they closed the hatch. Nothing on NASA TV or Spaceflight Now, nor on CNN's website about a scrub yet.
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#253
by
reubenb
on 08 Sep, 2006 14:14
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Official clock is still running on the NASA site...
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#254
by
Chris Bergin
on 08 Sep, 2006 14:16
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backspace - 8/9/2006 2:59 PM
Could be Bill Harwood prepping his story in case MMT says no-go... like those advance obituaries CNN has had in the past...
We all prep articles, but never as published. Doesn't make sense if that was so.
Meanwhile:
C&T/S-Band, Ku-Band high power (-----)
power amp activated
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#255
by
elmarko
on 08 Sep, 2006 14:19
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kneecaps - 8/9/2006 2:49 PM
I was always under the impression that the shuttles audio was multiplexed into a digital datastream (with telemetry) which was then sent to ground. If not I have a high end scanner and roof aerial that has been missing shuttle voice passes for years and I'm going to try!:D
Via Ku-band, yes, but on the way up and on the way down it's UHF military airband.
Try
www.uhf-satcom.com/sounds - you'll also notice that people are scanning another NASA radio net, in the clear, unencrypted, straight off a satellite... Wolfhound, DoD Cape, Cape Osbourne, etc etc. Very cool.
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#256
by
charlieb
on 08 Sep, 2006 14:20
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Answer to the question of audio downlinking; Air-to-Grounds -1 and -2 are multiplexed into the 196kb/sec S-Band and Ku-Band Channel-1 telemetry streams (telemetry from the Pulse Code Modulation Multiplexer Units - aka PCMMU's (pronounced Pukka-MOOs) within the Network Signal Processor (NSP), which then sends the baseband signals to the transponders.. You may reference the Flight Directors Console Handbook, Section 3.3, COMM, for a good schematic of the S-Band System
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#257
by
Chris Bergin
on 08 Sep, 2006 14:21
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Once again ONLY NEWS UPDATES IN HERE.
PV&D Nominal (cheinol)
All PV&D systems nominal.
ECLSS Cabin equalization seen at 16.88 psi
PS Good info above Charlie!
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#258
by
psloss
on 08 Sep, 2006 14:23
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George Diller just reported (I'm paraphrasing) that the MMT was off in splinter discussions, but would be getting back together with a decision shortly.
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#259
by
Chris Bergin
on 08 Sep, 2006 14:24
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Confirmed. We are NOT at a scrub at this time.
There is a poll coming in a few minutes which might end up being a scrub though, but everyone speaking to me is that there's not a scrub at this time.