What does the S in SDR stand for?
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Using this form, you can submit a new signal entry to the Unidentified Signals Database. There are a number of things to keep in mind:
There are no standard rules for this, a convention many use is "Unknown XXpXXX", where XXpXXX is the frequency your unidentified signal was found at in MHzMegaHertz (MHz) 10^6 Hz, where the 'p' denotes the decimal point. e.g. 34p544 = 34.544 MHzMegaHertz (MHz) 10^6 Hz. You may deviate from this freely, so long as it describes something about your unidentified signal.
The picture rules are more relaxed for Unidentified Signals than for Identified signals. All that is asked is that you do your best to get as high quality of a waterfall image as possible. For example, don't do this or this. To exemplify this, This and This are both the same signal, but one of them is much more detailed than the other. Zoom and FTT Resolution makes a significant difference.
List the frequencies that you have seen the signal to exist at. Have multiple frequencies separated by a comma. Be sure to add the suffix HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz)., kHzKiloHertz (kHz) 10^3 Hz, MHzMegaHertz (MHz) 10^6 Hz, GHzGigaHertz (GHz) 10^9 Hz, etc to properly list the frequencies.
These modes follow the SDRSharp naming convention for simplicity. NFMNarrowband Frequency Modulation = Narrowband FMFrequency Modulation. Any FMFrequency Modulation-modulated signal besides FMFrequency Modulation-Radio should be received in Narrowband FMFrequency Modulation. USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) = Upper Side Band Modulation, this is the default for signals recorded on HFHigh Frequency (3-30 MHz), or otherwise non-DSBDual Side Band Modulation (Dual Side Band) or AMAmplitude Modulation (Amplitude Modulation) signals. For any other signal that is either too wide or unlistenable using the other modes, use RAW.
If you know what modulation the signal uses, put it here. Otherwise, leave blank.
Do your best to figure out the best fit for the bandwidth of a signal. If the signal seems to fit tightly at 1968 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz)., 2000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). is a good number to choose for the bandwidth. It is known that bandwidth will be affected by the strength of the signal, so try to list an average or ideal reception bandwidth that will be more or less within the range of error for significantly weak or stronger receptions of the signal. If the signal has multiple modes that come with multiple bandwidths, list them with commas.
Unlike the identified signal section, this field corresponds to where you have received the signal (e.g. Your location. Can be as vague as the country, or as specific as the city or town). However if you know the source, then use the source location as the location field.
IMPORTANT: This file MUST be an .mp3 file. NO WAV's! Use MP3Cut.net to convert your wav file as well as trim it to the part you want to upload. Preferably keep this file size below 1 MB. For any sound samples above 1 MB, you may include those in the Long Description. This recording should match the mode in which the signal is optimally received (an FMFrequency Modulation-modulated FSKFrequency-Shift Keying signal recorded with NFMNarrowband Frequency Modulation, not USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables))
This is REQUIRED, especially for non-USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) signals. The IQ can be recorded using SDRSharp and using RAW and recording the 'audio', which actually makes an IQ file of only the area you selected with RAW, saving a lot of file size space. If the IQ file zip is too large, upload to a filehosting site like Mega.nz and link the IQ file in the Long Description.
Usually no more than two lines briefly summarizing the signal's behavior, possible identifications, etc.
This is optional. You can find the list of established categories here.
'''NOTE: PLEASE TYPE A LONGER DESCRIPTION HERE IF NEEDED OTHERWISE JUST DELETE. IF THERE IS NOTHING TO ADD OR YOU DON'T REQUIRE ALL SECTIONS, JUST DELETE THE TEXT.
== Samples ==
== Frequencies ==
PUT EXTRA DESCRIPTIONS ON THE FREQUENCIES USED HERE.
== Decoding Software ==
[http://DECODING_SOFTWARE.com/ SOFTWARE NAME]
== Decoding Tutorials ==
[http://www.DECODING_TUTORIAL.COM TUTORIAL TITLE]
== Video Examples ==
*[https://www.youtube.com/YOUTUBE_LINK Youtube Video Title Here]
== Additional Links ==
*[https://www.wikipedia.org/ Wikipedia Example]
== Additional Images ==
Image:33233.png|More Description and maybe a sound sample <html5media width="300">File:Unknown_28597.mp3</html5media>