Re: Topband: New Noise - 160 Meters

2016-10-14 Thread David Cutter
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

Re: Topband: New Noise - 160 Meters

2016-10-14 Thread Petr Ourednik
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

Re: Topband: New Noise - 160 Meters

2016-10-14 Thread Herbert Schoenbohm
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

Re: Topband: New Noise - 160 Meters

2016-10-13 Thread Joe Galicic
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: