TopBand: Re: [RFI] TVI Help

[mystc@ix.netcom.com]

you didn't say if your neighbor was on cable.
If they are...most TVI is a result of common mode ingress
ferrite chokes work, but I have found the best wat is to isolate the shield at
the set 75 unbalanced to 300 balanced, and then back usually does the
trick...add a high pass filter
at the end of the 2 transformers and TVI should dissapear.

DE Jim, n4mxz

Reid Bannon wrote:

>      Hi all:
>
>      I was operating during NA SSB Sprint Saturday night. 23 minutes into
>      the contesting when I got that dreaded knock on the door by my next
>      door neighbor complaining of TVI.
>
>      He was very nice and I immediately pulled the plug.
>
>      I installed a TH6 at 60' back in November and have operated alot since
>      installing this Antenna.  I use a Alpha Delta Twin sloper for
>      40-80-160.  Like I said have done a lot operating since installing
>      this antenna.  Sweepstakes with no complaints.  RTTY Roundup with no
>      complaints , and NAQP SSB with no complaints and alot of general
>      DXing, I operate all modes, CW SSB and RTTY.  All low power.  But all
>      it takes is one complaint.
>
>      I was on 20m at the time of the complaint.  It was raining outside the
>      ground was saturated.  Could this be a factor??  He said in the past
>      on just a few occasions he could "see me" on his TV was it was very
>      minor until tonight.
>
>      I am running a Kenwood TS450SAT barefoot, 100 watts.  My station is
>      grounded very well with a four ground rod system and all equipment
>      grounded to this system and tower grounded to this system.
>
>      No I am not using a low pass filter.  Guess that is my number 1
>      mistake.  But had heard pro's and con's so wanted to post here ask you
>      guys what steps should I take.  I want to resolve this quickly and do
>      not want to take up alot of my neighbors time trying to fix it.
>
>      Low Pass filter?? Alot on the market any one better than the other?
>      What about the Hi-Q Common-Mode Filter advertised in FEB QST page 137.
>      Anybody using one of these??
>
>      What about a high pass filter on their set??  They use an outside TV
>      Antenna.  I have cable in my house and never get into any of my TV's.
>
>      I am not getting into their regular telephone, but am also getting
>      into their cordless telephone.  He did not mention any problems with
>      stereo equipment.
>
>      Any help would be most appreciated.
>
>      73, Reid - N5ZT
>
>      bannonr@ccgate.dl.nec.com
>
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