Description: Trimble 4800GPS RTK system. The Trimble 4800 GPS system is a versatile Trimble GPS receiver that is ideal for control, measurement, design, stakeout, or as-built work. WAAS and EGNOS ready, it enables you to conduct real-time differential GIS grade surveys and navigation without a base station when in areas of WAAS/EGNOS coverage. Trimble 4800 offers Trimble Maxwell technology for superior tracking, Modular design for versatility: on a pole or tripod, on a vehicle, or in a backpack, fast and efficient data storage and communications, your choice of Trimble antenna for RTK roving or geodetic surveying. (PACIFIC CREST PDL 4535 450-470MHZ IN STOCK AND AVAILABLE UPON REQUEST AS SEPERATE PURCHASE). If you are interested in a specific brand or model please let us know since with over 300 total stations, robotics and GPS in stock there is a good chance we have it in stock so we can list it on ebay for you. Please note actual accessory items, which come with unit, is what it says in auction list not what appear in pictures. AUCTION INCLUDES: 2X TRIMBLE 4800 MICRO CENTERED L1/L2 ANTENNA 2X TRIMBLE 4800 BASE & ROVER ANTENNA PN:32119-56 7X TRIMBLE CANISTER BATTERIES LITHIUM-ION 2.4Ah 11.1V PN: 31030-00 1X LARGE TRIMBLE RADIO ANTENNA PN: 24253-46 1X 22720-10 REV D DCA 0216 104 CLAMP CABLE 1X 36241-50 REV B DCA 9950 CABLE 2X ANTENNA CABLE 14553-00 REV D2 DCA 0012 4X SOFT CASE (PACIFIC CREST PDL 4535 450-470MHZ IN STOCK AND AVAILABLE UPON REQUEST AS SEPERATE PURCHASE). SPECIFICATION: Code differential GPS positioning, Horizontal: ±(0.25m+2ppm) RMS Code differential GPS positioning, Vertical: ±(0.5m+2ppm) RMS Static and FastStatic GPS surveying, Horizontal: ±(5mm+0.5ppm) RMS Static and FastStatic GPS surveying, Vertical: ±(5mm+1ppm) RMS Real-time and postprocessed Kinematic surveys, Horizontal: ±(10mm+1ppm) (X baseline length) RMS Real-time and postprocessed Kinematic surveys, Vertical: ±(20mm+1ppm) RMS Initialization time: Single/Multi-base minimum10”+0.5 times baseline length in km, up to 30km Scalable GPS infrastructure Initialization time: <30” typical anywhere within coverage area Initialization reliability: Typically >99.9%