This is a technical guide and research paper focused on the HYT TC-320 programming software. Since the TC-320 is a legacy professional two-way radio, this paper addresses the practical needs of technicians, radio enthusiasts, and small business owners who need to reprogram these devices.
The HYT (Hytera) TC-320 operates in the 400–470 MHz UHF band. Unlike modern radios with Bluetooth or USB-C programming, the TC-320 requires: hyt tc-320 programming software
Problem: The official software is no longer distributed by Hytera, and third-party hosting sites often distribute malware-laden copies. This is a technical guide and research paper
| Error Message | Cause | Fix | |---------------|-------|-----| | “Communication timeout” | Wrong COM port or cable driver | Reinstall PL2303 v3.2.0.0 | | “Radio not responding” | Radio in low battery or bad cable connection | Replace battery, re-seat cable | | “Model mismatch” | Trying to load TC-500 file into TC-320 | Do not cross-load codeplug files | | “Frequency out of range” | Entered >470 MHz or <400 MHz | Adjust to hardware limits | A USB-to-serial (RS232) programming cable (typically using a
C:\HYT_TC320).Setup.exe and select Properties.Setup.exe to install. Accept all default paths.setup.exe as Administrator.C:\Program Files (x86)\HYT\TC-320 CPS\.TC320CPS.exe → Properties → Compatibility → “Windows XP (SP3)” + “Run as administrator”.Turn the radio OFF. Plug the programming cable into the radio’s accessory port (usually on the side under a rubber flap). Plug the USB end into your PC. Turn the radio ON.
File > Save As). Save the original .dat or .hyt file. If you mess up, you can restore it.