[TVI-RFI-EMI] N1VMJ interference

[D. Ramos]

         Hello: I saw your message for help. You mentioned that after 
raising the antenna 10 feet , the TVI returned. You may need to see 
what your friend and you did differently to change the 
characteristics of the dipole. Have you tried using a verical antenna 
to see if the TVI disappears? Don't forget to get those ferrite bead 
filters you can put around power cords to reduce the RF coming in 
that way. Let us know what you find.

                                                                         Dan 
Ramos// Huntington Beach,CA
At 01:04 6/4/2008, you wrote:
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>Today's Topics:
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>    1. Help - In house TVI on cable sets (kblists at comcast.net)
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>----------------------------------------------------------------------
>
>Message: 1
>Date: Tue, 03 Jun 2008 16:59:35 +0000
>From: kblists at comcast.net
>Subject: [TVI-RFI-EMI] Help - In house TVI on cable sets
>To: tvi-rfi-emi at mailman.qth.net
>Message-ID:
> 
><060320081659.18062.48457877000083800000468E22007589429C9B9C07040D05 at comcast.net>
>
>
>I'm new to HF operating at my home qth, after passing the general 2 
>months ago.  Prior I have operated 2/440/6m to coax fed yagi's 
>without any interference problems.
>
>My initial interference began after I whipped up a coax fed 20m 
>dipole and ran it in the backyard for an afternoon with the rig on a 
>picnic table and a dubious ground.  Family reported interference on 
>our living room flat panel LCD.
>
>I had a random V dipole up for RX fed by coax for a few years, apex 
>on the roof to yard corners.  I installed an RF ground (8 ft rod to 
>1" copper braid to a bus bar, and 1" braid to tuner & rig keeping 
>lengths as short as possible), changed out the coax for home made 
>window line, and purchased a tuner. I ran that for a little while on 
>18-80m without any known complaints.  Recently, a friend and I 
>raised that dipole some 10 more feet, balanced it, and TVI 
>returned.  I'm still a little short of detailed testing, but 20m 
>seems to be the worse, on at least 2 TV's in the house.  I 
>disconnected the tv coax on one TV and did not have interference 
>when disconnected.  I do get some audio on a set of computer 
>speakers elsewhere in the house.
>
>At this point, I've been reading what I can, and am finding lots of 
>differing opinions on how to resolve the problem.  At present, I've 
>only had complaints from the family, not from neighbors at this 
>point.  Radio is a 5 year old FT-897D, with the antenna and ground 
>system mentioned, running 100 watts max.
>
>Kevin
>N1VMJ
>
>
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>End of TVI-RFI-EMI Digest, Vol 23, Issue 1
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