Once you have the cable, software, and PC ready, follow this exact procedure. Do not skip steps.
To set or modify frequencies on a (typically a UHF or VHF model), you cannot do this directly from the keypad . The GP328 is a professional radio that requires Motorola CPS (Customer Programming Software) , a compatible programming cable (usually a USB-to-ribless or serial cable), and a Windows PC (XP/7 32-bit recommended). motorola gp328 frequency setting
A specialized GP328-to-USB or RS232 serial cable. Once you have the cable, software, and PC