Many streetlights will do the same. Ron AC7AC
-----Original Message----- The powerline noise was masking another noise source that was trashing everything from 80 up to 10m. This noise was about S5-7, but would cycle on an off....on for about 40 seconds, off for about 20 seconds then back on. .. Eventually tracked it down to my neighbor's sodium vapor flood lights. These lights are notorious for generating interference when they are on their last legs. Had the rig on and observed his light flickering (noise present), going off (noise gone) and then coming back on (noise returned). Neighbor would not replace it until it eventually craped out.... Harry WE1X -- ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html