<div dir="ltr"><h1 style="box-sizing:border-box;font-size:16pt;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif">Smartphone app helps identify unknown data modes</h1><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">There&#39;s an incredible amount of radio signals.</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">It&#39;s impossible to know them all, let alone recognize them. So why not get help from <strong style="box-sizing:border-box">SignalID</strong>?</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">At the moment, it recognizes about twenty signals (the exhaustive list is below) With only 5 seconds of recording time, it tries to recognize the signal.</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">To use it:<br style="box-sizing:border-box">Set the frequency and bandwidth properly.<br style="box-sizing:border-box">Selecting the frequency range. (0-30 MHz / Other) Place the microphone of the telephone near the loudspeaker. (The quieter the environment is around, the fewer errors will occur) Press the big button that dances.<br style="box-sizing:border-box">Wait 5 seconds. (Time required for record)</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">Tips :<br style="box-sizing:border-box">The algorithm is based on frequency, a wrong tuning of your radio/SDR will result in an erroneous detection.<br style="box-sizing:border-box">The recording is limited to 5 seconds, for practical reasons. Recognition of a signal may require several attempts.</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">If you notice bugs, have remarks or suggestions, please leave a comment.</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">Here is the non-exhaustive list of recognized signals :</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">- RTTY (Commercial 85Hz, 170Hz, 450Hz, 850Hz, Amateur 170Hz)</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">- PactorI (Standard, FSP, FEC, SELCALL)</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">- ASCII (170Hz)</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">- ALIS</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">- Codan8580 (200Hz, 250Hz)</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">- CIS36_50</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">- CIS40_5</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">- CIS50_50</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">- STANAG 4285 (GEN, SYS3000 FEC, 8PSK, TFC, IDLE, SYS3000)</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">- FT4</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">- FT8</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">- WEFAX (120, 240)</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">- 2G ALE</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">- 3G ALE</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">- CHIP64</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">- APRS (Burst)</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">And more ! Complete list in the application.</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px">The app is open source !</p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px"><a href="https://github.com/Neosama/SignalID" target="_blank" style="box-sizing:border-box;color:rgb(0,51,102);text-decoration-line:none">https://github.com/Neosama/SignalID</a></p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px"><a href="https://www.youtube.com/watch?v=E-y1Ts1q2RU&amp;feature=youtu.be" target="_blank" style="box-sizing:border-box;color:rgb(0,51,102);text-decoration-line:none">https://www.youtube.com/watch?v=E-y1Ts1q2RU&amp;feature=youtu.be</a></p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px"><a href="https://play.google.com/store/apps/details?id=com.tortillum.signalid" target="_blank" style="box-sizing:border-box;color:rgb(0,51,102);text-decoration-line:none">https://play.google.com/store/apps/details?id=com.tortillum.signalid</a></p><p style="box-sizing:border-box;color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:16px"><em style="box-sizing:border-box"><strong style="box-sizing:border-box">Stephen Walters G7VFY</strong></em></p></div>