Fenway

Having used remote-tech, i can say that it is relatively realistic. Space probes are tracked and controlled by Mission Control in the KSP: you simply need to have an active connection to it (through relay satellites) and there is a significant signal delay between when you send a command and when the probe executes the command (30 seconds on Eve, for example). Without an active connection, your probe has no control, unless you give it autopilot commands prior to signal loss.