Signal Identification Guide
This wiki is intended to help identify radio signals through example sounds and waterfall images. Most signals are received and recorded using a software defined radio such as the RTL-SDR, Airspy, SDRPlay, HackRF, BladeRF, Funcube Dongle, USRP or others.
Editing: Anyone can edit this wiki, so if you see missing or wrong information please feel free to correct it by clicking the 'edit with form' button at the stop of the signals page. When doing an edit you will be asked to answer a very simple spam prevention question which will appear at the top of the screen after clicking on Save page.
Adding a Signal: If you would like to contribute an example signal, or identify an unidentified signal please consult the Adding An Example Signal page for instructions. If for some reason you cannot use the form, please contact me at rtlsdrblog__AT__gmail__DOT__com and send a waterfall image, sound or small IQ sample and any information about the signal that you have. Note that it will probably take me 3 - 6 months to get to your signal.
Discussion: You can also discuss the signals by using the discussion tab at the top of every page, or just by using the comments box at the bottom of this page (note that the comments section will be periodically pruned to reduce its length).
Check out Artemis 2, the main companion app to this guide! Artemis 2 gives you all known reference signals in an easy to access offline format, with improved sorting and filters and offline audio samples and waterfalls.
Identified Signals in Database: 224
Unidentified Signals to be Identified: 83
Requested Signals: 43
Remember to enter units (Hz, kHz, MHz, GHz) if searching by frequency.
Feel free to make comments about unidentified signals that you might know or anything else here.