Hello Nigel,

Different Linux distributions put tty connections in different groups.

ls -l /dev/ttyUSB0

Will always tell you which group owns the device.  

Just add your user that that group and it will work.

73

David N1EA 
On Thu, Feb 27, 2020, 07:53 Nigel A. Gunn G8IFF/W8IFF <nigel@ngunn.net> wrote:
I  found that I needed to be in the 'serial' group rather than 'dialout'.