Very severe interference on the AM band.

[dieseljeep]

Originally Posted by maxhifi

I went through this a while back.. traced it mostly to LED and CFL energy saver light bulbs. A computer monitor power supply was bad news too.

I shut off all breakers in the building but one. The only item connected to the one circuit is the radio under test. The very same noise!
I fully understand that switching power supplies, LED and CFL lamps cause line noise.