The original ground crew voice lines sounded to me like someone with a runny nose had recorded them in a tiny prison cell. So I created some simple text-to-speech voice lines and added a radio effect.

Installation:
Replace the files in the DCS main folder with those from the .zip file (it's best to back up the original files)

...\DCS World OpenBeta\Mods\aircraft\JF-17\Sounds\Effects\Cockpit\GroundCrew\EN