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Re: [RFI] rfi from Ariss cable modem

To: rfi@contesting.com
Subject: Re: [RFI] rfi from Ariss cable modem
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Tue, 14 Mar 2017 20:29:43 -0700
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
On Tue,3/14/2017 5:27 PM, Jamie WW3S wrote:
finally tracked down a source of RFI, its my Ariss catv/voip phone modem......its powered direct 
from the ac lines, coax input , phone and ethernet outputs......its not the digital switching noise 
(that’s there, can here it in my noise locator) the problem is the AC “buzz” 
coming from the line cord......ferrite, maybe?

The first move should always be multi-turn ferrite chokes on all the cables. Follow guidelines in http://k9yc.com/KillingRXNoisePPT.pdf and http://k9yc.com/KillingReceiveNoise.pdf

73, Jim K9YC
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