Software alone isn't enough; you need a physical bridge between your PC and the radio. The OPC-478 / OPC-478UC:
Navigate to → Memory Channel (or click the “Ch” icon). You will see a spreadsheet with the following critical columns: icom ic-f3003 programming software
A USB-to-2-pin programming cable (typically the OPC-478UC) that connects the PC to the radio’s speaker/mic jack. Software alone isn't enough; you need a physical