[Elecraft] FT8 using internal USB sound on the K3S

[Brian Hunt]

A recent update to Win10 - v1803 - changed the permissions and security surrounding "devices" including the microphone. You have to change setting to allow the "microphone" to access apps since Windows thinks all sound cards are microphones. This little "upgrade" drove me nuts for days before someone posted the solution here. 

This may well be your problem. GL!
73,
Brian, K0DTJ