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Computers, Peripherals and Related Equipment The files in this section are recordings of RF noise from personal computers, peripherals and related equipment. 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! |
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| View/Listen | File Description |
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Filename: monitor.mp3 |
Contributor: Ken, VE3HLS Noise Source: My #@^%*&% computer monitor Where Found: 5975 kHz USB, but occurs throughout the lower HF bands |
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Filename: compspeaker.mp3 |
Contributor: Ken, VE3HLS Noise Source: Computer speakers, made by Logitech Where Found: 10051 kHz USB, and other locations in the HF band. The occurrances of noise are about 6 kHz wide. Notes: The speakers were purchased about 5 years ago. They have a circuit in them that turns them off after several minutes of inactivity. They turn themselves on when they detect audio at the input. When off they emit the RF noise in the file, and go quiet when they are on. |
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Filename: henry-router.mp3 |
>> NEW - January 24, 2005 << Contributor: Henry Baum Noise Source: Cable Internet Router Where Found: 6m and 2m bands. Notes: "This noise is heard on 6 meters and 2 meters only. I was so annoyed by the noise for about a year till I found out about the noise. This is the sound of my Cable internet router. The noise is only heard on a few frequncies on 6 meter SSB. The recording is of 6 meter SSB." |
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Filename: va3kdc-switch.mp3 |
>> NEW - January 24, 2005 << Contributor: Phil, VA3KDC Noise Source: 5-Port Ethernet Switch Where Found: Above 9 MHZ Notes: "This recording is on a grundig FR-200 receiver The noise is from an SMC EZ 5 port ethernet switch. This noise is heard at intervals up and down HF, most noticible above 9 mHz. Recording was made in AM mode" |
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Filename: kc5cmw-cable modem.mp3 |
>> NEW - January 24, 2005 << Contributor: Alex, KC5CMW Noise Source: Toshiba Cable Modem Where Found: 40m Band Notes: "I have found that my computer cable modem emits a carrier with a data stream imbeded about every 30 kHz on the 40 meter band. I also notice it on the 10 MHz WWV freq. The modem is a Toshiba model pcx2600." |