How do you use chirp?

Question

Chirp is an amateur radio program that will help program your radio from a computer. My radio is a Wouxun and the module is a KG-UV3D.The documentation says that is will work on this module, but there is not a setting for it so I got as close as I could. The cable looks like this:

What I am trying to do is follow the instructions but I keep getting stuck. First, you click on the Radio link. Next, I click Download from Radio. From there I get this picture.

After clicking ok, I get this error message:

could not open port /dev/ttyS0: [Errno 13] Permission denied: '/dev/ttyS0'

Can anyone tell me how to fix this problem? Once again, thank you in advance for any assistance you may have to offer.

Answer 1

That error means you are not allowed to access /dev/ttyS0 on your computer. Only root and users in the dialout group may access that device.

If you are running chirp as a normal user (I assume you are), the problem is probably quite simply that your user does not belong to the dialout group. Try the following command:

sudo usermod -aG dialout USERNAME

where you replace USERNAME with your own username, of course. Log out and in again, fire up chirp, it should now work.