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1
The Hoax Theory / Re: Fake PLSS?
« Last post by BertieSlack on Today at 05:25:43 AM »
I believe we can see it being handled on the ground in this Apollo 17 documentation near the 6:20 minute mark.
Well spotted. We can definitively put this one to bed.

Many thanks, gents. I'll be using this in a forthcoming debunk video.
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The Reality of Apollo / Re: Digitizing NASA data tapes
« Last post by ka9q on Today at 05:14:29 AM »
Between the two voice recordings, "1605" is sent in CW (morse code)
That's the Greenwich Mean Time (now UTC). In those days, WWV hadn't completely standardized on universal time; it transmitted local time in the voice announcements. Until 1966, it transmitted from Greenbelt Maryland (near NASA Goddard SFC), which of course was in the eastern time zone.


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The Reality of Apollo / Re: Digitizing NASA data tapes
« Last post by apollo16uvc on March 17, 2019, 06:54:27 AM »
People told me pretty quickly what the recording was about.

The voice recorded was the WWV time signal, it was THE time standard in the US.

The tape document designates track 3 as "WWV Signal" I was already confused because none of the tracks were documented as a "Voice announce" track.

Between the two voice recordings, "1605" is sent in CW (morse code)
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The Hoax Theory / Re: Fake PLSS?
« Last post by Abaddon on March 17, 2019, 06:13:27 AM »
I believe we can see it being handled on the ground in this Apollo 17 documentation near the 6:20 minute mark.
Well spotted. We can definitively put this one to bed.
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The Reality of Apollo / Re: Digitizing NASA data tapes
« Last post by ka9q on March 16, 2019, 10:32:18 PM »
The 01 and 10 (never 00 or 11) sequences is call "Manchester coding", and it was a very popular line code at one time. It still is, though there are better alternatives now. It eliminates any DC component from the data and pushes the spectrum away from zero so it can be transformer or capacitor coupled or recorded on magnetic media using old-style electromagnetic-type heads. It's also self-clocking.
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The Hoax Theory / Re: Fake PLSS?
« Last post by 12oh2alarm on March 16, 2019, 04:58:37 PM »
I believe we can see it being handled on the ground in this Apollo 17 documentation near the 6:20 minute mark.
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The Reality of Apollo / Re: Digitizing NASA data tapes
« Last post by apollo16uvc on March 16, 2019, 04:47:05 PM »
Gerald from the unmannedspaceflight forum has the following idea:


When coding the upper potential with 1, and the lower potential with 0, with a more or less fixed clock rate, we get pairs 01 or 10, never 00 or 11. So such a pair, or transition, seems to code a bit .
So it should be fairly easy to convert the signal into a bit stream.

Then it only requires us to find the relevant documentation so that we can write a computer program.

Voice found on beginning of NASA tape

On satellite tape 'Sat-SNTAGO-120J827' a voice can be heard briefly at the beginning. The voice probably tells us the recording time. "The time is 11 5 AM"

The satellite is Upsilon 61, the recording date was Sept 7, 1961

I had to play the recordings backwards.
Here the fragment as an MP3 file.
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The Hoax Theory / Re: Fake PLSS?
« Last post by Abaddon on March 16, 2019, 04:34:09 PM »
Sounds right :)

I also find a training image on this site:

http://www.ninfinger.org/karld/My%20Space%20Museum/mesa.htm

labelled 'J series MESA'. There's an object shown on it that looks very like what we're seeing, so I superimposed the Apollo image:



Looks pretty conclusive :)
Edit for clarity

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The Hoax Theory / Re: Fake PLSS?
« Last post by Abaddon on March 16, 2019, 04:16:03 PM »
Sounds right :)

I also find a training image on this site:

http://www.ninfinger.org/karld/My%20Space%20Museum/mesa.htm

labelled 'J series MESA'. There's an object shown on it that looks very like what we're seeing, so I superimposed the Apollo image:



Looks pretty conclusive :)
Well that nails it. It's the same object from front or side in either pic
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The Hoax Theory / Re: Fake PLSS?
« Last post by onebigmonkey on March 14, 2019, 02:59:49 AM »
Sounds right :)

I also find a training image on this site:

http://www.ninfinger.org/karld/My%20Space%20Museum/mesa.htm

labelled 'J series MESA'. There's an object shown on it that looks very like what we're seeing, so I superimposed the Apollo image:



Looks pretty conclusive :)
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