In search of early Trimble GPS receivers
I’m trying to track down any of Trimble’s first generation of GPS receivers; the 4000A, 4000AX, 4000S, 4000SX, 4000SXD, 4000SL or 4000SLD. These were the rack mounted silver receivers that many a brave soul lugged around the landscape in even bigger flight cases the ’80s:
If you have one collecting dust somewhere, please get in touch with me and maybe we can work out a deal. I’m working on a technological history of Trimble’s early survey receivers, and I’d love to see under the hood of one of these receivers.
Log in to reply.