Archives de catégorie : Hack

Hack, RF

Find and listen TETRA Network in your area

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Update 9/9/2016

I have write something for non friend linux users, a script (bash) for load all components in the same time, flow-graph are also modified for 425Mhz (most common in EU for puclic networks). Download here. Unzip and put the folder in your personal folder, change the path of every file by replacing « username » ( /home/username/Telive_Run ), give permission on every file, by CHMOD 755, now, you just need to run Telive_Run.sh to start the listen of your favorite Tetra network, default file loaded with GRC is telive_1ch_simple_gr37_udp.grc

sq5bpf has release two years ago, a great software called, TELIVE.

« Telive is a program which can be used to display information like signaling, calls, SDS, location information etc from a TMO Tetra network. It is also possible to log the signalling information, listen to the audio in realtime and to record the audio. Playing the audio and re-compressing it into ogg is done via external scripts. The software is based upon modified osmocom-tetra software. Location information can be written to a KML file, to be opened in Google Earth and similar software. »

1) Install the software, you can find documentations and install scripts on GitHub
Continuer la lecture de Find and listen TETRA Network in your area →

Hack

PG03 MiniGPS and tracking recorder

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First version : 24.04.2014

I have just retrieved a small gps buy from ebay, called Mini GPS (enf pg03), cost around 20€ …pl410961-mini_navigator_dt_efnpg03_displaying_accurate_time_synchronized_by_satelliteIt is a small size and portable GPS receiver with data collecting and calculating functions. It also provides indication of geograpic coordinates, directions, world time, distance, milage, and velocity information. Its high-sensitive direction indication guide user to go back original departure position or go to the presetted target position. The unit shows clear travelling date in detail, such as, the direction of the target position, distance, satellite time, and velocity information in usage.

This small unit do not provide to record tracking informations … so, start to disassemble it, in the goal to record NMEA sentence. Continuer la lecture de PG03 MiniGPS and tracking recorder →

Hack

Retro engineering on a pager, Tatoo Hack

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This hack, backward me in 1996/1998 during my college years, the pager system was at its peak, there was 3 commercial services and networks here, in France:

  • TamTam, the Cegetel/SFR paging services, stopped in 1999, using ERMES protocol.
  • KOBBY, from Bouygue Telecom, stopped during 2005, using ERMES/FLEX protocol.
  • TATOO, from FT/Orange, using POCSAG, the only still functioning, right now, since 2000, exploited by a Deutsch company, E-Message.

The Kobby and TamTam use VHF frequency band (Update 18/03/14 – 169,425-169,800 Mhz), and the TATOO receiver use UHF band (466.025 MHz – 466.05 MHz – 466.075 MHz – 466.175 MHz – 466.20625 MHz – 466.23125 MHz.). POCSAG protocol is basically easy to decode, with software like POC32 or PDW Continuer la lecture de Retro engineering on a pager, Tatoo Hack →