I am using HRD/DM780 with a ³Navigator² interface. They work great, kudos to Simon & Glenn. I am using all for PSK31 as well as the Navigator for a separate WSJT/JT65A application. I would like to see more of the K3 features in HRD, such as ³CWT² & ³RIT². It may be there already, just have not found it. Sid Leben, KC2EE KX1 K3