Accuracy: ±13 in., ±4 in., sub-1 in. (RTK)

Components: Original or GreenStar 2 display, StarFire iTC roof-mounted receiver (and antennae with RTK), RTK base station (RTK systems only), AutoTrac activation

Price: AutoTrac SF1 activation (±13 in.), $10,300; AutoTrac SF2 activation (±4 in.), $14,000; AutoTrac RTK activation, $17,000 (includes base station)

Plug and play availability: For model years 2006 and 2007, all John Deere 8030 and 9020 series tractors are AutoTrac ready.