Sort of off topic, but trying to keep up with Dr. Ian LEE on interfacing the uBitx with the Raspberry Pi 3.
all good so far, can run FLDIGI and have CAT Control of the uBitx with the Pi.
what i'm having difficulties with is
the type 'sudo apt-key adv –keyserver keyserver.ubuntu.com –recv-keys 862549F9'
not able to get there from here.
any suggestions? getting a gpg: WARNING: no command supplied.