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Household

Household Appliances and Electrical Equipment

The files in this section are recordings of RF noise from known household appliances and electrical 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!

RFI Noise

  • Light Dimmer-

    Contributor: Ralph, VE3BBM, via Jacques d'Avignon, VE3VIA
    Noise Source: Light dimmer
    Where Found: 152 kHz USB, but covers the LW and MW bands
     

    Listen

    lightdimmer.gif

  • Sony-TV+

  • Treadmill+

  • Power Line Controls (PLC-4)+

  • Ionic Breeze Air Cleaner+

  • Shaub Lorenz 20" stereo TV+

  • General Instruments DSR-920 4DTV (satellite) receiver+

  • No-name Brand Electric Blanket+

  • Fox Repel-tron Electronic Insect Repeller+

  • Charger for Sony Digital 8 Video Camera+

  • Charger for Motorola Cordless Phone+

  • Switching Power Supply+

  • Battery Charger+

  • Grow light+

ARRL Lab Staff Contributions

The ARRL Lab discovered that an electric blanket emits RF noise. The blanket has two sets of controls for two separate heating circuits. They found that the blanket makes noise even when it's shut off and different characteristic noises when one side is on and the other is off, when they're both off, or both on. The following ten recordings cover all the possibilities, plus the recordings were made in AM and USB.

Contributor: Mike Gruber, W1MG and Ed Hare, W1RFI - ARRL Lab
Noise Source:
Perfect Fit Low Voltage Fleece Warming Blanket, Queen Model #LVBQ-SB-1, made by Perfect Fit Industries
Where Found:
Recorded on 28,350 kHz, with a 2.4 kHz IF filter on USB and a 10 kHz filter in AM.

  • w1rfi-1on-1off-am-

    Notes: One half of the electric blanket is turned ON and the other half is OFF, but plugged in. Recorded in USB and AM modes. The waveform of the AM recording is shown.w1rfi_1on_1off_am.gif

     

  • w1rfi-1off-am+

  • w1rfi-1on-am+

  • w1rfi-2off-am2+

  • w1rfi-2on-am+

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