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Re: [RFI] RF getting into 4-port wirelss router.

To: "Roger (K8RI)" <k8ri@rogerhalstead.com>, RfI@contesting.com
Subject: Re: [RFI] RF getting into 4-port wirelss router.
From: "Kenneth G. Gordon" <kgordon2006@frontier.com>
Reply-to: kgordon2006@frontier.com
Date: Mon, 12 Jan 2015 08:09:49 -0800
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
On 12 Jan 2015 at 3:18, Roger (K8RI) wrote:

> Is the neutral connected to ground at the service panel and at the pole?
> We discovered that the neutral had never been connected at the pole 
> feeding my folks old farm house.

I know it is OK at the house, since I put it in and connected it to the panel, 
but I am not sure about the pole.

Thanks for the suggestion. I'll call the local power company and have them 
check it.

Also, after all the good suggestions I have received here, I am beginning to 
have serious doubts about the ground system in the house.

I am thinking the following:

1) My 8' ground rods may NOT be an adequate ground. I'm going to get 
together with the power company to check all this out.

2) The OLD ground wire which the geology students put in to the panel, and 
which ended at the plastic water pipe that comes from the city main, may be 
long enough, and oriented well enough, to act as an antenna. I'm going to 
take that out today. It is at least 30 feet long (which never did meet code).

3) I now agree with those who have suggested that the RFI may NOT be 
getting to the router through any of the CAT-5 cables. However, by 
disconnecting the CAT-5 that goes to the basement shack, it APPEARS, so 
far, that the router is not effected when I'm on the air. Of course, however, 
there is the "problem" that yesterday I added at least 6 more clamp-on filters 
to both the DC feed that connects the wall-wart to the router (both ends) and 
to the CAT-5 that comes from the basement (both ends and in the middle). 
Those I added to the DC line from the wall-wart were looped at least 5 times, 
as was at least one at the CAT-5 that connects to the router, and twice at the 
shack end (all I could get).

4) What is still bugging me is why the GFCI at the washer still "hums" in time 
with my keying, although it no longer trips. I have not figured that one out.

5) Concerning the coax to the antenna: it is a piece of RG-8, buried in the 
ground and is about 50 feet long, looping around the concrete patio. 
Although I have not checked it out thoroughly, it is getting RF to and from the 
antenna...

6) I am also, now, very suspicious of the ground system in the shack. I'll 
review all of it as soon as I can get to it, and will follow the suggestions 
mentioned by you folks. Although I do have a #12 bare copper wire 
connected to the amp and the coax that feeds the antenna, and to the 
electrical panel, I am now not sure it is contiguous.

Again, thanks for the suggestions. I very much appreciate them. No matter 
how long we have practiced in a field, it is always possible to overlook 
something.

vy 73,

Ken W7EKB
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