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Re: [RFI] Finding house noise sources

To: Rfi@contesting.com
Subject: Re: [RFI] Finding house noise sources
From: "Gary Smith" <Gary@ka1j.com>
Reply-to: Gary@ka1j.com
Date: Tue, 19 Jan 2016 08:55:41 -0500
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
Hi Mike,

A great listing of areas to check. I found two outlets that are dead, 
the hall light, the fan and light in the hood over the oven and so 
far that's it. Nothing attached has anything digital. I looked by the 
fuse box which is in the open but saw nothing there related to the 
door bell. I'm guessing it is in the attic's crawl space but with all 
that insulation blown in up there, it's a no man's land I hate to 
cross. Not only will I need a respirator but I'm going to be 
concerned about putting a foot through the downstairs ceiling. None 
of the electric lines are surrounded by conduit, all are Romex.

I think there are more electrical areas that are going to be an issue 
for me here but it is difficult to tell. Any time one of those damned 
AMTRAK electric trains approaches and long after it leaves, reception 
is trashed. Being on the run between NYC and Boston, the commute 
times have lots of trains and of course there are trains passing at 
all other times but the worse at gray line. As a result, its hard to 
tell if interference is inside or outside.

My father had the house built in 1969 and he had RFI issues back in 
the day with it, I find parallel resistor & mica pairs all over the 
place. As I recall, his problems were never the reception, it was 
confined to transmitting issues. I remember him ringing the chimes on 
the doorbell and getting into the phone line but he resolved that. 
Wish he was still around to ask where things were placed, it would 
help to find them.

As to leaving the breaker off, I would be fine with that but the YL 
likes all the outlets working in the kitchen. She stops cooking and 
I'll be an a bad way... I need to get the cause of the problem 
discovered and resolved. Hihi.

Thanks for the suggestions.

73,

Gary
KA1J

> Hi Gary, 
> 
>  
> 
> I was an apprentice electrician in a past life.  We often mounted the bare
> doorbell transformer on an L-16 type connector right on the side of the
> electrical panel, or off the side of a nearby octagon box near-ish wherever
> the twisted pair of low voltage wiring would go upstairs to your doorbell
> cct's.  I have actually seen a "bad" doorbell transformer, so they do exist.
> If your panel is behind gyproc, you may need to get in behind it somehow to
> see.
> 
>  
> 
> Other things to think about that could possibly be on that kitchen cct are:
> 
>  
> 
> Smoke alarms or co2 monitors
> 
> microwave ovens
> 
> fridges (icemaker or any electronics)
> 
> stoves (does it have a digital clock?)
> 
> alarm systems (you probably would've mentioned that)
> 
> pot lights with electronics ballast
> 
> LED valance lighting (switching power supply)
> 
> Touch taps (the tap/faucet at your sink)
> 
> in-sink garborator
> 
> dishwasher
> 
> mini split a/c-heater
> 
> on demand hot water heater
> 
> vent fan
> 
> electrically heated floor?
> 
>  
> 
> The thing is, a *lot* of stuff might be hard wired into your house and not
> necessarily (or obviously) be plugged into an outlet right there in plain
> sight.
> 
>  
> 
> A friend of mine had his built-in microwave oven cause s9+ QRM when he was
> on 10m , and that was with his beam 120' away and 80' up in the air.
> 
>  
> 
> Needless to say, on solar cycle peaks and if there was a contest on, this
> fellas wife doesn't defrost or cook anything in the microwave as that
> breaker is OFF on the weekends!
> 
>  
> 
> HTH
> 
>  
> 
> Mike ve9aa
> 
>  
> 
> Mike, Coreen & Corey
> 
> Keswick Ridge, NB
> 
>  
> 
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> 



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