How do you tell the difference between a TCXO and the TCXO-1 models? Looks like both are marked TCXO...and nothing with the -1 on the TCXO-1 model. Thanks.. Rich N7TR ex KI3V, N3AMK, WB3JOV www.n7tr.com Telnet: dxc.n7tr.com N7TR DXCluster