-----Original Message-----
From: Jim <mystc@earthlink.net>
To: rfi@contesting.com <rfi@contesting.com>
To: <rfi@contesting.com>
Date: Saturday, January 23, 1999 5:35 AM
Subject: Re: [RFI] Ferrites???
>
>-----Original Message-----
>From: daniel wright <djw@unlinfo.unl.edu>
>To: rfi@contesting.com <rfi@contesting.com>
To: <rfi@contesting.com>
>Date: Friday, January 22, 1999 8:09 AM
>Subject: [RFI] Ferrites???
>
>
>>
>>Greetings!
>>
>>I am newly subscribed to this list and in the past few days
>>have seen no messages. Maybe the traffic is slow right now.
>>
>>Anyhoo....I am in the process of trying to get the RFI out
>>of my and the neighbor's TV sets. We are both on cable and
>>I am having limited success with the two different Radio Shack
>>ferrite cores. Is there anything better out there? I need to
>>use them on the power cables and the cable TV cable. If I
>>don't have any success soon, I will be back on this reflector
>>lookin' for more HELP! Thanks es
>>
>>73 de Dan -- WA0JRD ..
>>djw@unlinfo.unl.edu
>>Lincoln,Nebraska
>
>
>A very simple and effective way to eliminate MOST cable RFI is as
follows...
>Attach a 75-300 ohm balun to the incomming cable at the rear of the
>set...take another 75-300 ohm balun, and ..attach the 2 leads to the 2
leads
>you just ended up with, and you are back to 75 ohms....this isolates the
>shield, which is the source of most RFI (common mode).
>Top it off with a 75 ohm hi-pass filter to the set. Sounds simple, but the
>baluns are ferrite torroidal and the hi-pass filter adds an extra measure
of
>harmonic protection. All parts are available at Radio Shack and are
>inexpensive.
>
>DE, Jim
> n4mxz
>
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