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Re: [RFI] ITV in 6 meters..HELP

To: "rfi@contesting.com" <rfi@contesting.com>
Subject: Re: [RFI] ITV in 6 meters..HELP
From: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Sun, 01 Jul 2007 18:19:39 -0700
List-post: <mailto:rfi@contesting.com>
On Sun, 1 Jul 2007 19:06:16 -0400, Eduardo Somoano wrote:

>Regrettably I am making ITV in the channel 2 TV  
>when transmit in 6 meters.  

That is a very common, and very difficult one to fix, because 6 
meters (50 - 54 MHz) is right next to Channel 2 TV (54-60 MHz). 
For a different reason, 6 meters is also difficult for lots of 
telephones and audio equipment (hi-fi). 

In most parts of the US, people get their TV via cable TV 
systems rather than with an antenna on the roof. That has made 
TVI pretty uncommon here. In your situation, the best cure is 
distance -- that is, keep your transmitting antenna as far as 
possible from the TV and its antenna. 

If its your own TV and it has a roof top antenna, you can buy a 
filter to reject 6 meters. It wont be cheap, and it may not fix 
the problem. For my old QTH in Chicago, I bought one from Tin 
Lee Electronics near Toronto for about $80. That was 3-4 years 
ago, and they may be more expensive now. It goes between the TV 
its antenna. Dont expect it to work unless theres a good roof-
top antenna, and even then your transmitter may be getting 
picked up by the internal wiring of the TV itself. If it is, the 
filter wont fix it. 


Jim Brown K9YC

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