Years ago, I was working on a telemetry system at a broadcast transmitter site. The equipment was in a rack beside the 5kW AM transmitter. The sample from the transmitter was ground referenced. I put a clip lead between the ground side of the sample and the rack cabinet the telemetry equipment was in. The clip lead melted.... Harold > Probably, all you need to induce this noise is a cliplead between the two > system grounds. > If so, there's current flowing between the two systems. > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics > -- FCC Rules Online at http://www.hallikainen.com -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics