5 ms·
Decoding radio-controlled bus stop displays (2013)
- kfarr 5y agoSomewhat related, SFMTA Muni is retiring its current bus stop displays because of AT&T 3G decommissioning. Probably not worth the effort, but presumably sufficiently motivated people could spoof legacy 3G and feed it any data they wish. https://www.masstransitmag.com/technology/passenger-info/signage-and-displays/press-release/21256697/san-francisco-municipal-transportation-agency-sfmta-att-3g-decommissioning-impacts-sfmtas-nextmuni-electronic-displays-at-transit-shelters https://www.masstransitmag.com/technology/passenger-info/sig...
- dest 5y agoThere has been a very nice CCC talk on this topic… but I don't have the link :/
- 8bitsrule 5y agoThis 2015 post (Bastian Bloessl) digs in a bit, then point at a short video. https://www.bastibl.net/reversing-bus-telemetry/ https://www.bastibl.net/reversing-bus-telemetry/ https://www.youtube.com/watch?v=pJwQUHeWftc https://www.youtube.com/watch?v=pJwQUHeWftc Useful 'Darc side of Munich' page: https://apollo.open-resource.org/mission:log:2014:08:08:darc-side-of-munich-hunting-fm-broadcasts-for-bus-and-tram-display-information-on-90-mhz https://apollo.open-resource.org/mission:log:2014:08:08:darc...
- dang 5y agoOne tiny past discussion: Decoding radio-controlled bus stop displays - https://news.ycombinator.com/item?id=6789485 https://news.ycombinator.com/item?id=6789485 - Nov 2013 (3 comments)
- krallja 5y agoThere is so much free information out on the airwaves, if you only had the protocol docs available. In addition to the usual pseudo-voyeur stuff (police/fire/EMS/Burger King drive-thru radios), I've seen people downloading telemetry data from space probes, decoding GPS, tracking airplanes with ADS-B, and of course, bus timetables.
- contingencies 5y agoDon't forget wifi, bluetooth, vehicle radios, toys, wireless doors, alarms, lights and sprinklers, agricultural and fleet telemetry, AIS...
- rasz 5y agohttps://www.youtube.com/watch?v=oG_G6rZHp1A https://www.youtube.com/watch?v=oG_G6rZHp1A Neil McCauley : how do you get this information? Kelso : It comes to you, this stuff just flies through the air, they send this information "beamed" out over the fucking place, you just got to know how to grab it, see, I know how to grab it.
- RicoElectrico 5y agoWouldn't that be écouteur rather than voyeur? ;)
- squarefoot 5y agoYup, there's a huge number of protocols used for radio, too bad powerful software like Code300-32 still cost an eye. Tech specs are impressive, but still €4500 for the cheapest version. http://www.hoka.net/pdf/code300-32_spec.pdf http://www.hoka.net/pdf/code300-32_spec.pdf There are some FOSS demodulators out there, but unfortunately the number of protocols they support is way smaller. SigDigger however seems promising, although still in early stage of development. https://batchdrake.github.io/SigDigger/ https://batchdrake.github.io/SigDigger/ > people downloading telemetry data from space probes Monitoring JWST transmissions, if doable, might be the next milestone for Ham Radio.
- RF_Savage 5y agoAlready done by multipke people at the level of seeing the carrier. No data decoded as that needs much larger dishes. People have also been able to receive the carrier of various space probes orbiting Mars.