Final answer:
To clean the audio connector pins on a radio and handset, use a proper cleaning solution, such as isopropyl alcohol, and a soft, lint-free cloth or cotton swab.
Step-by-step explanation:
When cleaning audio connector pins on a radio and handset, it is important to use a proper cleaning solution and a soft, lint-free cloth or cotton swab. Isopropyl alcohol is commonly used as a cleaning solution for electronic components because it evaporates quickly and does not leave residue. When cleaning the pins, gently wipe them using the cloth or swab soaked in the cleaning solution.