While this may seem like an unusual post, there is a specific reason for it.
A couple of years back I had once stumbled upon a question that has bugged me, since the upcoming anniversary of the september 11th attacks, and with my obsession with the pagers, and the way they sound, is there any pager messages that are listed anywhere on the interwebs...?
Turns out the answer checked out and wikileaks has an article of 443000+ messages (including a separated list of indexes, 288 to be exact), of all the pager messages that were intercepted from 03:00 9/11 to 03:00 9/12. The link to the last 12 intercepts:
https://911.wikileaks.org/So what exactly is going on here?Well, the goal is to pretty much encode all 448358 messages, back into an original form. And that is, in the well known POCSAG format. I have done several SDR examples over the years with this protocol, and since POCSAG is dying away from the US, even in the public safety sector, I thought I might as well re-surface the old technology for use within this project.
What tools are you using?https://github.com/YalekW5435/Pocsag-Terminal This tool is a terminal program, much like in the format of SoRFmon's encoder, that can generate these messages on the fly. It uses parameters such as --address, --slot, --function, --group --type, and --message to generate the messages exactly as to how a POCSAG system would. Even more shocking, this program was written with gemini AI, which in other sense is the vibe coding nonsense you see today. The messages do decode inside PDW, but not all messages are decodable. I dont know if this is a windows-related or PDW related issue (I use windows primarily). But it has been tested.
Other tools include, audacity and those IQ plugins.
Why are you doing this project? 1. This is to be a historical preservation effort, by posting the raw pulse train and/or afsk POCSAG data directly to archive.org. 2. To simulate what would happen if such a transmitter were to be simulated and dealing with such traffic in the period with I/Q data. 3. To pay respects to the lives lost during the attacks. 4. To possibly broadcast a 4-6 hour live stream from time index 08:49:00, a good time to prepare for what was about to come at 08:51:00 when the first plane hits one of the towers, during one of the anniversaries, most likely coming later in life towards the 50th or 60th anniversaries depending on if im still alive.
here are 3 videos of the first 3 indexes completed:
https://drive.google.com/file/d/1P-9Slk ... drive_linkhttps://drive.google.com/file/d/1ZVYns- ... drive_linkhttps://drive.google.com/file/d/13t_bfJ ... drive_link
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