They still do as it's harmless, you can make it on site and it's cheap. Resistivity of > 10Mohm/cc is practical, > 20Mohm/cc is doable and < 2Mohm/cc is too poor to use. It's strange to watch water cascade out from behind the panels of a transmitter and wonder if there's enough water left to finish the transmission. Lee. .. ___________________________________________________________ To help you stay safe and secure online, we've developed the all new Yahoo! Security Centre. http://uk.security.yahoo.com