Thanks y'all - that sets me straight. Clay, if you come up with a solution, let us know! Bret/N4SRN -- View this message in context: http://elecraft.365791.n2.nabble.com/K3S-10MHz-GPSDO-Frequency-Time-tp7621858p7621913.html Sent from the Elecraft mailing list archive at Nabble.com.