[SEDXC] RFI ON STEREO SYSTEM

[Tom W8JI]

Ferrite beads are not a magical cure-all. Depending on the particular bead, 
they only add a few dozen to a few hundred ohms of series impedance. How 
well they work, and what they do and do not do, depends on the entire system 
(including lead lengths and RF impedances).

In some cases a few ohms can make a big difference, in other cases adding 
1000 ohms or more can actually make things worse!

http://www.w8ji.com/consumer_equipment_rfi.htm


Notice on that page, my lightning protection of consumer gear also works for 
RFI protection.

73 Tom




----- Original Message ----- 
From: "Dale M. Schwartz" <dale at immlawfirm.com>
To: <sedxc at yahoogroups.com>; "SEDXC" <sedxc at contesting.com>
Sent: Friday, December 14, 2012 12:21 PM
Subject: [SEDXC] RFI ON STEREO SYSTEM


>I have an RFI problem with neighbor's stereo system. When I'm using linear, 
>he gets Los buzzing from his stereo speakers. I tried some ferrites on 
>speaker wires, but that only helped a little.
>     Would love some advice from any RFI gurus among us.
>     I realize it's not my responsibility to fix his stereo problem, but I 
> want to keep the peace in the neighborhood.
>                     Dale
>                     K4ROZ
>
>
>
>
>
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