[Resend due to oops last night involving multiple email accounts.] And here are the graphs from unit #1, the one that won't lock: http://n5tnl.com/time/fe-5680a/graphs/fe5680_1_ch3.png http://n5tnl.com/time/fe-5680a/graphs/fe5680_1_ch4.png -- newell N5TNL