Thanks a bunch for the quick replies. Through a truly bizarre coincidence, I 
can confirm (99.9% certainty) that the RF noise was from my neighbor’s outdoor 
soffit lighting. What happened was, a few minutes after I sent my original 
email about the noise, I went back to my shack to check the radio. Lo and 
behold, the noise was gone. I peeked through my window and saw that my neighbor 
had turned off his soffit lights! That was an unbelievably strange coincidence!

 

The question now is what should I tell my neighbor to do to stop the 
interference, other than to never turn on the soffit lights 😊 Any suggestions?

 

Thanks,

Amal – KT5AC

 

From: David Morefield <da...@fluffyshotme.com> 
Sent: Sunday, January 14, 2024 8:37 PM
To: BRAZOS VALLEY AMATEUR RADIO CLUB <bvarc@bvarc.org>
Cc: Kori Rahman <kori...@gmail.com>; Amal C. Phadke <amal.kt...@gmail.com>
Subject: Re: [BVARC] Recommendation for noise suppression?

 

I had an issue with noise recently and it was caused by the proximity of my 
laptop charging brick to my radio. You may want to start turning things off to 
see if you can eliminate the source of the noise. 

David Morefield

Owner - Fluffyshotme Photography

da...@fluffyshotme.com <mailto:da...@fluffyshotme.com> 

281-960-5253 mobile

 

 <http://www.fluffyshotme.com/> 

 

 

On Sun, Jan 14, 2024 at 7:47 PM Kori Rahman via BVARC <bvarc@bvarc.org 
<mailto:bvarc@bvarc.org> > wrote:

I have only seen something close to this level of interference on 2m and that 
has been from some cheap LiFePo4 charger I got that was charging my 100Ah 
battery. But it was about 25% bars and it was about 30ft from my 2m antenna. It 
does happen a lot with chargers for various batteries like shop tool chargers 
etc.

 

Sounds like a job for a 2m Yagi and am attenuator. I've got the Yagi but not 
the attenuator.

 

73,


 

Kori Rahman, WX5KR
Brazos Valley Amateur Radio Club

Vice-President and Club Call Sign KK5W Trustee
Cell: (770) 298 8516

 <mailto:kori...@gmail.com> kori...@gmail.com

 

 

 

On Sun, Jan 14, 2024 at 7:30 PM Amal C. Phadke via BVARC <bvarc@bvarc.org 
<mailto:bvarc@bvarc.org> > wrote:

Folks,



            I am hoping someone can give me pointers on suppressing
annoying noise my dual band (2m-70cm) antenna picks up in VHF range. I
suspect it is from my neighbor’s external soffit lighting, but I am not
sure. The receive signal meter fully lights up like seen in the attached
picture. The repeater was idle when I took this picture. It doesn’t happen
on UHF, only VHF and only from dusk to dawn. I hear a lot of static in the
received signal, and I suppose in the transmitted signal as well. Moving the
permanently installed outdoor antenna is not practical and using slip-on
ferrite beads on the coax didn’t help. Has anyone experienced this issue? I
would appreciate any suggestions.



Thanks, and 73,



Amal - KT5AC

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