[RFI] HomePlug OK?

[Dave Cole (NK7Z)]

For those that are not sure, I have a brief write up at:

https://www.nk7z.net/rfi-now-house-cleaning/

on how I removed 90% of my RFI that I was generating.

73s and thanks,
Dave (NK7Z/NNR0DC)
https://www.nk7z.net
ARRL Technical Specialist

On 09/02/2018 04:59 PM, Joe wrote:
> I have 'heard' silence when there has been an area wide power outage.  Then
> fired up my 25kw generator, still no noise.  Yes, I am 100% confident that I
> have no noise issue within *my* '4' walls.
> 
> Yes, I do have neighbors that generate noise...biggest offender?  Invisible
> fences and bark collars on dogs.  And, of course, the aforementioned plasma
> TV.s
> 
> Joe - W7RKN
> 
> -----Original Message-----
> From: RFI [mailto:rfi-bounces at contesting.com] On Behalf Of Jim Brown
> Subject: Re: [RFI] HomePlug OK?
> 
> On 9/2/2018 4:12 PM, Joe wrote:
>>
>> Not with Cat5e cable, and even less so with Cat6 cable.
>>
>> (I am all Cat6 and have no issues on any ham band, 160 up through 10
>> and into the VHF/UHF/ and microwave bands.)
>>
> How can you be certain of that when part of what you hear on your
> antennas is everyone else's noise? Take that away and you'll hear your
> own trash. Have you gone through your own home and replaced all the
> noisy switch-mode power supplies with linear supplies? The average home
> has at least a dozen, and many homes have more.
> 
> I've heard Ethernet noise using Belden Mediatwist. It's radiated as a
> common mode signal, and has little if anything to do with the quality of
> the cable.
> 
>> All my noise is generated by those *%$#*&@@#$* plasma TV's everyone
>> bought 3-5 years ago.
>>
> And if that noise wasn't there, you'd hear their switch mode power
> supplies and various gear with any form of digital electronics.  Here's
> an email I received last week from a contester friend.
> 
> =   =   =   =   =   =   =   =   =   =   =   =   =   =
> 
> Thanks Jim, for your emphasis on noise reduction in our stations!
> 
> Someone was yelling at you in TowerTalk earlier this week, and that
> reminded me of your noise crusade, and how I've been bothered by
> that noise showing up in the the WSJT spectrum display on 160m.
> 
> So, today was "noise elimination day." Eliminated 4 wall-warts
> (where did they come from! who put those in!) Made powerpole
> cables to the regular big 12 supply. Got ferrite on the HDMI cable
> to the PC monitor. Found and replaced an outside power supply
> (at the Comtek boxes)that looked heavy like a linear, but was a
> switcher. The WSJT spectrum display on 160m is now mostly
> clean and quit. Now, I can see and hear the neighbors crap...
> 
> =   =   =   =   =   =   =   =   =   =
> 
> 73, Jim K9YC
> 
> 
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