Petr
That's very interesting.
I have heard that long led strips eg in the kitchen are powered from a noisy
smpsu: the long cable is the antenna. A linear supply should stop that
noise or small ferrite toroids (it's very low current). I have just
purchased some from IKEA and will be testing
Hello,
not only the "defective" LED lamps makes the noise.
I found several LED strips (used commonly in kitchen)
and LED bulbs coming from China generates strange noise
on HF bands. I noticed it when the noise raised up from S3 to S7
on 160m while I was on key. So I immediately went to
I found a defective LED lamp that sounded. Getting the neighbors to
turn off lamps one by one while you listen in the shack over the phone
might help if they will do that. In my case it had peaks staring in
the AM band and noticeable up to 4 Mhz. Also a bad cell phone charge
adapter power
Link to files
https://www.dropbox.com/sh/3ftcsm50mvr9jmy/AABcDfHjYn-GKvelQhmyJTBia?dl=0
- Original Message -
From: "Joe Galicic"
To: "PVRC List" , "TopBand List"
Sent: Thursday, October 13, 2016 1:35:15 PM
Subject: