Transmitters and Intentional RF Emitters
The files in this section are recordings of RF noise from known transmitters and RF emitters. If you can match noise at your location to one of these files then you can be confident that you know where your noise is coming from. Now all you have to do is find it and fix it!
Contributor: Ken, VE3HLS
Noise Source: Unidentified
Where Found: 458 kHz USB, in the longwave band
Notes: Not particularly bothersome, and it might even be a legitimate transmission of some kind. E-mail me at firstname.lastname@example.org if you know! You can also E-mail this author at email@example.com.
Click this link to listen: www.arrl.org/files/file/RFI Sounds/unid-458khz.mp3
>> NEW - April 24, 2005 <<
Noise Source: CODAR
Where Found: 60m band
Notes: CODAR is a type of HF radar, commonly used for mapping the ocean's surface and currents. A Google search on CODAR will turn up many useful references.
Note: There are three separate groups of "sweeps" in the recording. I believe the first group was recorded in LSB, the next group in AM and the final group in USB...Ken
Click this link to listen: www.arrl.org/files/file/RFI Sounds/wb0ocv-codar.mp3