does anyone recognize this interference?

[Jim_Shaffer]

For the past week or two, I've been seeing this pulsing interference across almost the entire HF spectrum. It's most visible here in the amplitude plot from 18-25 MHz due to the lack of other signals at the moment, but in the waterfall you can see it going down to at least 5 MHz. The other streaks that start at 0 and peak around mediumwave are probably lightning, and I suspect that the garbage from ~1500 kHz to ~3500 kHz is DSL, but I don't think that this new interference is DSL because first, I still only have 3 Mbps ADSL on my road, and second, it's not there full-time. Sometimes hours will go by without it, other times it's almost continuous.

 

[krokus]

The two most common sources:
Switched mode power supplies.
Plasma TV/monitor.

It is likely to be from a neighbor's house. Using a small AM radio, and walking around the neighborhood with it, would help you localize the source.

 

[dlwtrunked]

For the past week or two, I've been seeing this pulsing interference across almost the entire HF spectrum. It's most visible here in the amplitude plot from 18-25 MHz due to the lack of other signals at the moment, but in the waterfall you can see it going down to at least 5 MHz. The other streaks that start at 0 and peak around mediumwave are probably lightning, and I suspect that the garbage from ~1500 kHz to ~3500 kHz is DSL, but I don't think that this new interference is DSL because first, I still only have 3 Mbps ADSL on my road, and second, it's not there full-time. Sometimes hours will go by without it, other times it's almost continuous.

A common cause of interference like this is certain "reverse rotation" clothes washing machines. For that reason, due to a neighbors, I do not listen on Saturday mornings.

 

[Chronic]

LED Grow Lights ?

 

[UTE-GE]

LED Grow Lights ?

 

[Jim_Shaffer]

The spectrum looks a bit like grow lights, but it pulses on and off, at random times, so it's almost certainly not. (Also, do they wipe out 0-30MHz like that? Mine only wipe out longwave.)

 

[wtp]

i don't know, but this is a guess, solar power panels ?