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  2. StarFire (navigation system) - Wikipedia

    en.wikipedia.org/wiki/StarFire_(navigation_system)

    StarFire is a wide-area differential GPS developed by John Deere's NavCom and precision farming groups. StarFire broadcasts additional "correction information" over satellite L-band frequencies around the world, allowing a StarFire-equipped receiver to produce position measurements accurate to well under one meter, with typical accuracy over a 24-hour period being under 4.5 cm. StarFire is ...

  3. List of John Deere tractors - Wikipedia

    en.wikipedia.org/wiki/List_of_John_Deere_tractors

    John Deere Model 60 (1955) John Deere Model 530 (1959) John Deere Model 430S (circa 1960) After years of testing, Deere & Company released its first proper diesel engined tractor in 1949, the Model R. The R was also the first John Deere tractor with a live independent power take-off (PTO) equipped with its own clutch. The R also incorporated ...

  4. GPS satellite blocks - Wikipedia

    en.wikipedia.org/wiki/GPS_satellite_blocks

    A hydrazine propulsion system was used for orbital correction. The payload included two L-band navigation signals at 1575.42 MHz (L1) and 1227.60 MHz (L2). The final Block I launch was conducted on 9 October 1985, but the last Block I satellite was not taken out of service until 18 November 1995, well past its 5-year design life.

  5. John Deere - Wikipedia

    en.wikipedia.org/wiki/John_Deere

    Deere & Company, doing business as John Deere (/ ˈ dʒ ɒ n ˈ d ɪər /), is an American corporation that manufactures agricultural machinery, heavy equipment, forestry machinery, diesel engines, drivetrains (axles, transmissions, gearboxes) used in heavy equipment and lawn care equipment.

  6. John Deere 5220 - Wikipedia

    en.wikipedia.org/wiki/John_Deere_5220

    The John Deere 5220 is a utility/agricultural tractor produced by John Deere, designed for residential and farming use.Manufactured from 2000 to 2004, it has a 3-cylinder, 53 horsepower (40 kW) engine which produces 140 ft⋅lbf (190 N⋅m) of torque at 2400 rpm.

  7. John Deere Model A - Wikipedia

    en.wikipedia.org/wiki/John_Deere_Model_A

    The A was produced in a wide variety of versions for special-purpose cultivation. It received a styling upgrade in 1939 and electric starting in 1947. With the advent of John Deere's numerical model numbering system, the A became the John Deere 60, and later the 620 and 630, 3010, 3020, 4030, 4040, 4050, 4055, and ended with the 7610. [1]

  8. John Deere Model R - Wikipedia

    en.wikipedia.org/wiki/John_Deere_Model_R

    In addition to being the first Deere diesel tractor, the R was the first to have a "live" power take-off, with its own clutch allowing independent control of the PTO. A cab option was available for the R. [1] [2] [3] The Model R was produced at the John Deere factory in Waterloo, Iowa. 21,293 were built, at a selling price of about $3,600. [4]

  9. John Deere Powershift transmission - Wikipedia

    en.wikipedia.org/wiki/John_Deere_Powershift...

    The John Deere PowerShift transmission was an eight-speed semi-automatic transmission without a torque converter, used in John Deere tractors, including the iconic John Deere Model 4020. [1] The Powershift is not to be confused with similar John Deere transmissions (including the Quad-Range and the PowrQuad [ 2 ] ), or with the Ford Ultra ...