[RFI] Washer RFI/EMI

Cortland Richmond ka5s at earthlink.net
Mon Sep 7 08:56:32 PDT 2009

Convincing politicians to require energy efficient chargers and wall-warts
locally procured for LE and Safety agencies might have the desired result.


> [Original Message]
> From: Jim Brown <jim at audiosystemsgroup.com>
> To: RFI List <rfi at contesting.com>
> Date: 9/7/2009 11:26:28 AM
> Subject: Re: [RFI] Washer RFI/EMI
> threat. From direct personal experience, I can tell you that a single 
> switching power supply sold and installed as a "transformer" for low
> lighting, or the rechager for a portable drill can wipe out the entire MF
> HF spectrum just as effectively as BPL. These are only two of many nasty 
> noise generators, and they are becoming increasingly dominant in their 
> individual markets. If you don't believe me, visit any store that sells 
> lighting and look for a "line voltage" fixture that doesn't have a

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