And there is an article in this month's QST about the same and potential benefits. MM At 06:54 PM 1/14/2008 -0800, Kevin Tekel wrote >Modern Mechanix article from 1957 about diathermy and its potential for >harmful RFI: > >http://blog.modernmechanix.com/2007/11/22/what-you-should-know-about-diathermy/