[Elecraft] OT--RFI Issue

[Brian Alsop]

These kind of installation problems are not rare.

TWC did the original installation here.

A few years later while troubleshooting a low signal problem they found:
1)Several corroded connectors from the street to the house
2)An extra unterminated splitter in their house mounted box.
3)Replaced an F connector in the wall plate fixture for the cable modem.
4)Replaced the cable modem.

A few weeks later they had to come out to replace the modem in (4) that 
was a huge source of RFI.  (Switching supply I believe).  New modem was 
quiet.  I'm sure the replaced modem will end up in somebody else's house.

73 de Brian/K3KO


On 3/19/2013 13:18, John Fritze wrote:
> Make sure ALL of his cable drops are terminated at a piece of equipment or
> are capped with a 70 ohm resister.  Any open ends of cable act as an
> antenna.  This is the most common offender!   Make sure all splits go
> through a cable splitter of correct impedance.  Make sure all cable
> splitters are turned the correct direction. Time Warner installed one
> backwards in my house causing poor TV reception.  Lastly, your cable
> company has the option to "up" the signal strength at individual houses.
>   Perhaps your neighbor's level is so low as to be a problem.
>
> When I had my house remodeled several years ago the electrician thought is
> was OK to simply twist the cable center conductors and shields together and
> put wire nuts on them.  He did this in several spots.  Needless to say he
> got an earful from me.
>



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