I did call the power company and told them I thought I was getting noise from the power lines. They said they would notify our local repair crew and have them check it out. We will see what happens.Yes, coax pick noise too.
I would use choke balun at antenna feed point and another where coax enter you house/garage etc.
Also I advise to insulate antenna from a mast (if conductive).
I will try that. Thank you muchIt's why many antennas use a DC shunt - makes a good RFI trap for noises entering into the antenna from broad banded sources - including their new 5G tower "cap" setups that provide local short range coverage in neighborhoods.
IF you got time, might want to take a short drive around the neighborhood with your cars' AM radio tuned to a distant station (or CB) - so the noise emanating from the source can be located by listening for the "blanking" or washing out of the weaker distant signal overcome by the emissions of this new device
I contacted the power company and a guy came out yesterday.. He looked at the insulators from his bucket lift and really couldn't see anything he said. He checked the records and found out the pole in front of our house was installed in 1965. He said the porcelain insulators were the old type that haden't been used for years. He was going to put in a repair request but it may not get done till spring when the weather is better. Now we wait and seeNoise can come from powerline, powerline transformer on the pole, etc.
A few months ago I had s9 of noise from 10 to 54 MHz.
Powerline acted as transmit antenna, failure was located over 300m away - defective powerline insulator. We found that with small AM radio Sony 7600g and diy frame antenna.