Set privacy codes to block out unwanted chatter from other groups using the same frequency.
Re-check Device Manager to confirm your COM port number. Go to Setup > Port in the HYT software and ensure it matches perfectly. If using Windows 10 or 11, you may need to roll back your Prolific driver to an older version (e.g., version 3.2.0.0) to bypass counterfeit chip restrictions. Error: "Frequency Out of Range" Hyt Tc-500 Programming Software