tk500 is a multiplatform programming and cloning utility for the portable Yaesu VR-500 receiver. It can read the memory image from the radio, display the information graphically, and save it to a file. It can import information from an RT Systems .RDF file and export memory channel information to a .CSV (comma-separated values) file. Users are free to change most settings and write the memory image back to the receiver. tk500 exploits undocumented features within the radio.