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Re: Topband: DSL knocks out when on TopBand

To: herbs@vitelcom.net
Subject: Re: Topband: DSL knocks out when on TopBand
From: N1BUG <paul@n1bug.com>
Date: Mon, 16 Jul 2012 21:10:28 -0400
List-post: <topband@contesting.com">mailto:topband@contesting.com>
 > My problem is that when I  try to operate on 160 the DSL
 > crashes. I have tried many Type 31 3 inch ferrite rings
 > with 20 turns on both the phone line and the Cat 5 cable
 > from the Zhone modem but even at 200 watts the
 > DSL looses sync.

Herb,

I had exactly the same problem, tried the same "cures" you have. The 
problem is ADSL uses frequencies up to 1.1 MHz. The modems are 
easily overloaded by 1.8 MHz RF. Nothing worked until I built this 
simple filter designed by OZ1CTK:

http://www.ddxg.dk/oz7c/adsl/adsl_160m_filter.pdf

Without this filter 50 watts on 160 kills my DSL connection. With 
the filter, 1500 watts is OK 99.9% of the time. Very rarely in wet 
or very windy weather I still have problems, for what reason I don't 
know.

73,
Paul N1BUG
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