FT-840 CAT Cable
The USB-61 cable from RT Systems is a USB cable that works with software for the FT-840 to control the radio from your computer. Any software that works through the CAT port of the radio can use the USB-61 cable. The cable sets up a com port that you easily identify on your computer and in the application. This cable is complete from the radio to a USB port on your computer eliminating the need for a USB to serial adapter (which may or may not work for your application).
Control and/or logging software for the radio is available from other sources. RT Systems provides the drivers for the USB-61 cable but not control software.
This radio cannot be programmed from the computer. That function is not a part of the design of the radio.