<div>Muito, muito interessante. São as experimentações do futuro, agora que as comunicações analógicas estão a desaparecer...<br><br></div>Alguém já experimentou o tal receptor DVB-T USB? Continuo à espera que me entreguem o meu...<br>
<br>73,<br>António Vilela<br>CT1JHQ
<br><br><div class="gmail_quote">On 27 April 2012 18:14, João Costa > CT1FBF <span dir="ltr"><<a href="mailto:ct1fbf@gmail.com" target="_blank">ct1fbf@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>The Osmocom project is a family of projects regarding Open source mobile communications. It includes software and tools for a variety of mobile communication standards, including GSM, DECT, TETRA and others. Choose from the following project list: </div>
<div> </div>
<div>- OsmocomBB - Is an Free Software / Open Source GSM Baseband software implementation.</div>
<div> </div>
<div>- OpenBSC - This is a project aiming to create a Free Software, (A)GPL-licensed software implementations for the GSM/3GPP protocol stacks and elements. </div>
<div> </div>
<div> </div>
<div>- DECT - Osmocom DECT is an Open Source implementation of a DECT network stack, including drivers for the SC14421/14424 baseband processors. It supports operation as both the Fixed Termination (aka basestation) as well as the Portable Termination (aka telephone) side. </div>
<div> </div>
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<div>- TETRA -This project aims at practical research and experimentation with the TETRA trunked radio system. It is part of the bigger family of Osmocom projects, all aiming to create Free Software (Open Source Software) for mobile communications. </div>
<div> </div>
<div> </div>
<div>- SIMTRACE - Osmocom SIMtrace is a software and hardware system for passively tracing SIM-ME communication between the SIM card and the mobile phone. </div>
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<div> </div>
<div>- SECURITY - Mobile (in)security. This website is intended to collect information about publicly-known security issues and other bugs of mobile communications systems, with a particular focus on the 3GPP-specified protocol layers of GSM, GPRS, EDGE and WCDMA(UMTS). We collect informationon issues at any protocol layer and at any of the interfaces, i.e. the Um air interface just as well as A-bis, A, IuB, C or any of the SS7/MAP/TCAP based core network interfaces. </div>
<div> </div>
<div> </div>
<div>- GMR - GEO Mobile Radio. This is the homepage of the Osmocom sub-project GEO Mobile Radio. It is collecting information and software related to the ETSI GEO Mobile Radio specification and its practical implementations like the Thuraya satellite phone network GEO Mobile Radio is a set of specifications describing a satellite based mobile phone network.</div>
<div> </div>
<div>- SDR - OsmoSDR is a 100% Free Software based small form-factor inexpensive SDR (Software Defined Radio) project. If you are familiar with existing SDR receivers, then OsmoSDR can be thought of something in between a FunCubeDongle? (only 96kHz bandwidth) and a USRP (much more expensive). <b><u>For a very cheap (but inaccurate) SDR, you can use the DVB-T USB stick using the RTL2832U chip, as documented in rtl-sdr</u></b>. It consists of a USB-attached Hardware, associated Firmware as well as gnuradio integration on the PC. The hardware is currently in prototype stage. As soon as it is finished, we will make it available through <a href="http://shop.sysmocom.de/" target="_blank">http://shop.sysmocom.de/</a> </div>
<div> </div>
<div> </div>
<div>- OP25 - is a not-for-profit project to bring together folks that are interested in implementing APCO P25 using a software-defined radio. Our goal is to build a software-defined analyzer for APCO P25 signals that is available under the GNU Public License (GPL). </div>
<div> </div>
<div> </div>
<div> </div>
<div>More info: <a href="http://osmocom.org/" target="_blank">http://osmocom.org/</a></div>
<div> </div>
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