Is this power line noise?

  • 1
  • Question
  • Updated 4 months ago
I see this everyday now in our new location at this campground. I haven't seen it before.
Photo of Ken Golubski

Ken Golubski

  • 36 Posts
  • 2 Reply Likes

Posted 4 months ago

  • 1
Photo of Duane, AC5AA

Duane, AC5AA

  • 459 Posts
  • 103 Reply Likes
Is your, or a neighbor's wash machine running?  Looks similar to PWM driver interference.
Photo of Ken Golubski

Ken Golubski

  • 36 Posts
  • 2 Reply Likes
No.....we are in a more than half empty campground. Nothing at all running in our camper. This same camper at different locations, does not show this. That's why I suspect it has something to do with the location.
A power transformer is about 900 feet away from us.
Photo of Ken Golubski

Ken Golubski

  • 36 Posts
  • 2 Reply Likes
I should add that this is only between 8Mhz and 5.2 Mhz
(Edited)
Photo of Ted  VE3TRQ

Ted VE3TRQ

  • 573 Posts
  • 203 Reply Likes
I have a wall wart that makes noise which looks just like that, although a bit fainter. Squirms around a bit and slowly migrates in frequency. Do you have neighboring campers?
Photo of Ken Golubski

Ken Golubski

  • 36 Posts
  • 2 Reply Likes
No neighbors yet. The weather here is still pretty cool and wet.
BUT....I think you're on to something.....there is a wall wart in the radio cabinet I will move to test. I wish I would have thought of that.

Thank You !!!
Photo of Joel Swapp KO6FL

Joel Swapp KO6FL

  • 10 Posts
  • 1 Reply Like
I gue
As I am not literate but what is a wall watt?? I have strange signals on my radio.
Photo of Duane, AC5AA

Duane, AC5AA

  • 459 Posts
  • 103 Reply Likes
You know - those little solid state power supplies that plug into the wall to power your 12V or 5V devices - like the charger for your phone, or the AC power supply for your laptop.  Those are wall warts because that's what they resemble.
Photo of Steve

Steve

  • 30 Posts
  • 3 Reply Likes
I had a switching inverter on my camping trailer that look very much like that.
Photo of Ken Golubski

Ken Golubski

  • 36 Posts
  • 2 Reply Likes
Thanks to all.......it was the wall wart in the radio cabinet. I'm back to being a happy camper :)
(pun intended).
Photo of Craig Williams

Craig Williams

  • 222 Posts
  • 69 Reply Likes
I have a bunch of old AC to DC wall wart's. When I find a new one that makes noise I trade it out. Be nice of the FCC enforced it's own rules.
Photo of N8AUM

N8AUM

  • 115 Posts
  • 11 Reply Likes
remember the good ol days when they did their jobs?
Photo of Robert Lonn

Robert Lonn

  • 372 Posts
  • 129 Reply Likes
Might be Solar Panels???
Photo of N8AUM

N8AUM

  • 115 Posts
  • 11 Reply Likes
I have some monitors that radiate something similar. I think its the cheap design of the power supplies, thank you FCC in allowing the cheap Chinese junk to be imported ! I would gladly pay a few pennies more for something that doesn't spew out and radiate garbage ! 
(Edited)