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Unzip the downloaded archive using a tool like WinRAR or 7-Zip.

: Select the software package suitable for your region (e.g., EMEA, NA, or AZ/Asia) to ensure it matches your radio's regional firmware. Alternative Resources

: Offers a range of approximately 10–20 km, making it suitable for growing organizations.

Assign frequencies, squelch codes (CTCSS/DCS), and channel names.

Plug the programming cable into your PC and the front panel of the powered-on GM338.