![]() ![]() Motorola's TETRA Home Page - lots of information here regarding Motorola's entry into the TETRA market, news, information, and product descriptions.TETRA MOU Home Page - this is the web site for the TETRA MOU (Memorandum of Understanding) which is the organization responsible for developing and publishing the TETRA Digital Trunked Radio Standard.See the New Firmware Update for the AOR DV1 as of 19 February 2021 Thread.These are commercial packages (very expensive) which can analyze and decode numerous modes, including TETRA.Updated Meteo and TETRA plugin Note: Site is in Russian.All software runs on linux and is fully opensource (except for the ACELP codec from ETSI). Please read the documentation and the Tetra decoding Thread on Radioreference. The software can process multiple channels at once, and gnuradio-companion receiver flowgraphs are provided to monitor multiple channels with one sdr dongle. The receiver uses an rtl-sdr dongle and gnuradio (3.6, or 3.7.5 or higher), but the software was also reported working with a funcube dongle and USRP. The program will decode some location protocols, and provide the decoded data in a KML file (readable by Google Earth and other software). Telive will display a console showing current SSI numbers, and have the option to log signalling information, decode some SDS messages, record traffic (and recompress it into OGG files), and do live listening. telive - telive is a frontend for patched osmo-tetra and friends: osmo-tetra-sq5bpf, libosmocore-sq5bpf.Currently, it can receive, demodulate TETRA downlink signals of real-world TETRA networks display information about SYNC, SYSINFO, MM and CMCE PDUs. You can learn more about how TETRA works on its lowest level, but no decryption. The osmo-tetra project aims at implementing the sending and receiving part of the TETRA MAC/PHY layer. osmo-tetra - is a open source tetra decoder using linux, gnuradio and USRP1/2 for signal processing.AOR receivers AR-DV1, AR-DV10 and AR5700D can monitor TETRA Voice (the first two models require a paid key to follow TETRA trunking) and software to do it exists (SDR# w/TETRA plug-in, telive, w-code, and probably others). It can use strong encryption on the air interface, and this is usually used on sensitive traffic (police etc), but commercial networks are often unencrypted. ![]() Tetra systems uses both Voice and Control Channel. The existing public safety networks are coming to the end of their economic lifetime and TETRA provides the key features like equipment standardisation, direct mode, encryption and last call set-up time for these services. police, fire brigades, EMS, border control officials, etc. The first users to implement TETRA are the European public safety and emergency services, i.e. Tetra is an open voice standard developed by the European Telecom Standards Institute (ETSI) and is in use primarily overseas and in Europe. TETRA is an acronym for TErrestrial Trunked RAdio. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |