Programming software for the GP88S is intended for licensed amateur radio operators or commercial users with valid frequency allocations. program frequencies outside your license privileges. Transmitting on public safety or restricted bands (e.g., marine VHF, aircraft, or police frequencies) is illegal and subject to heavy fines.
Before launching the software, you need the right physical interface. You cannot program a GP88s with a standard USB cable. You will need: motorola gp88s programming software