[HN Gopher] Decoding radio-controlled bus stop displays (2013) ___________________________________________________________________ Decoding radio-controlled bus stop displays (2013) Author : zdw Score : 41 points Date : 2022-02-14 19:17 UTC (3 hours ago) (HTM) web link (www.windytan.com) (TXT) w3m dump (www.windytan.com) | kfarr wrote: | Somewhat 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/sig... | dang wrote: | One tiny past discussion: | | _Decoding radio-controlled bus stop displays_ - | https://news.ycombinator.com/item?id=6789485 - Nov 2013 (3 | comments) | dest wrote: | There has been a very nice CCC talk on this topic... but I don't | have the link :/ | krallja wrote: | There 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. | RicoElectrico wrote: | Wouldn't that be ecouteur rather than voyeur? ;) | contingencies wrote: | Don't forget wifi, bluetooth, vehicle radios, toys, wireless | doors, alarms, lights and sprinklers, agricultural and fleet | telemetry, AIS... | squarefoot wrote: | Yup, 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 EUR4500 for the cheapest version. | 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/ | | > people downloading telemetry data from space probes | | Monitoring JWST transmissions, if doable, might be the next | milestone for Ham Radio. | RF_Savage wrote: | Already 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. ___________________________________________________________________ (page generated 2022-02-14 23:00 UTC)