According to the comments on the myGMRS website, this would work on a Radioddity DB-25G. It didn't work on mine. Fortunately I found the original cable in the box where it had fallen behind a chair. That one worked fine.
Hi Jon, this cable is specifically for the Retevis RA25 radio. We do not claim that it works with the Radioddity DB-25G in the listing. You can always return the cable if you are unable to use it, just reach out to our support team.