[ORAWA01]

My QTH has developed this very high level of QRN, static noise on the frequency range of 3.9Mhz - 5.2Mhz recently.

It is very strong and covers the whole part of the stated frequency range. I couldn't hear any signal on the band be it day or night due to the swamp of the noise.

It used to be not as bad as that, but started a few days ago, and now staying quite severe QRN 24 hours a day everyday.

I will get my portable HF radio with the whip antenna out, and go around the house trying to locate the source.

But why does it affect that segment of the spectrum? And what is the likely source? Have you ever come across the similar problem yourself? How did you tackle it?

Thanks