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Many radio enthusiasts and third-party vendors host the .zip or .exe files. Look for reputable repositories like HamFiles or Repeater Builder , though you should always scan these files for malware before installing. Required Hardware for Programming
Downloading the software is only half the battle. To connect your TC780 to your PC, you will need:
In Windows Device Manager, identify which COM port is assigned to the cable (e.g., COM3). In the HYT software, go to Setup > Communication Port and match it.