> Easiest way to disable this function is to short the base to emitter junction > of Q10 Or, simply lift one end of Q10's base resistor and never worry about shorting a current source to ground. -Paul, W9AC -- FAQ on WWW: http://www.contesting.com/FAQ/tentec Submissions: tentec@contesting.com Administrative requests: tentec-REQUEST@contesting.com Problems: owner-tentec@contesting.com