Kenwood officially states they do not re-issue these license numbers if they are lost or misplaced.
A graphical representation of the radio’s front panel. arcp2000 cd key
The ARCP-2000 was designed to give users total mastery over their radio via a Windows interface. Virtual Control: Kenwood officially states they do not re-issue these
ArcP2000 is a software tool used for designing and optimizing arc welding processes. It's likely that the blog post you're referring to discusses the CD key associated with this software. arcp2000 cd key
Operates the radio from a PC, which is essential for the TS-B2000 model since it has no front panel display.