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Windows often assigns a high COM port number (like COM12) to USB cables. The Icom software often defaults to COM1. Open on your PC.
Check if "Inhibit" is checked or if frequencies are out of range. icom icf4003 programming software work
In the CS-F3001 software, go to and select the matching COM number. B. The "Aftermarket Cable" Trap Windows often assigns a high COM port number
If the software won't open at all or crashes, right-click the .exe file or shortcut, go to , and select "Run this program in compatibility mode for Windows 7." Also, check "Run as Administrator." Summary Checklist Software won't open Run as Administrator / Compatibility Mode. COM Port Error Match Port # in Device Manager and Software. Radio not detected Push 3.5mm plug in deeper; check driver version. Can't transmit Check if "Inhibit" is checked or if frequencies
This is where you enter your RX/TX frequencies. Ensure your "Spacing" is set to 12.5kHz (Narrow) for modern FCC compliance in the US.
