Check you line voltage, it may be out of the spec for the DC supply. It is likely that the environment at TT is fairly well controled. Bill Ames KB1LG -- FAQ on WWW: http://www.contesting.com/tentecfaq.htm Submissions: tentec@contesting.com Administrative requests: tentec-REQUEST@contesting.com Problems: owner-tentec@contesting.com Search: http://www.contesting.com/km9p/search.htm