Unuasable for radio amateurs, but a nice piece in the collection is this Motorola GP600 in mint condition. This radio has never been used: it still has the protection sticker is on the display.
The GP600 was a radio for MPT-1327 trunking networks. Big logistics companies and for instance Amsterdam airport had trunking networks. But also the company ‘Entropia’ offered MPT-1327 trunking service.
Motorola had trunking radios in their ‘Jedi’ series. With the correct software, some handy tools and some good guidelines these radios could be flashed into conventional sets. Which means it was possible to turn a GP1200 portable into an MTS2000. This was possible because the hardware for the trunking and conventional radios was identical. Only the firmware was different. Unfortunately this wasn’t possible with the GP600 as this radio (as well as the GM600) were build from scratch as trunking transceivers.
Conclusion is that the GP600 is an UHF portable which can handle 4 conventional channels. Which summarizes the use for radio amateurs.