cat interface

[G4POP]

Is any other software connected to your TS590 radio?

[G4POP]

it has a usb cable hook to the radio &pc

So we are in a loop here!

Again my question is "Did you install the Kenwood USB drivers before connecting the USB cable from the radio to the PC"

Please read the area highlighted in red on this Kenwood web site

https://www.kenwood.com/i/products/info ... vcp_e.html