StarFire™ 7500 Receiver

When it comes to large agricultural, small agriculture and turf customers, the StarFire 7500 receiver is precise – allowing for repeatable placement of machines, fertilizer, seed, and herbicides.

• 100 percent increase in satellite constellations used by the receiver*
• 17 percent greater accuracy*
• Long-term repeatability (where applicable) vs. 9 months*
• 73 percent reduction in pull-in time*
• Universal offering that’s compatible with older and competitive equipment
• Interchangeable: tillage, planting, spraying, and harvesting

*All comparisons made to the StarFire 6000 with SF3

John Deere’s StarFire 7500 receiver, paired with the SF-RTK satellite correction signal, delivers RTK-like accuracy and long-term repeatability—up to 2.5 cm (1 in.) horizontal precision—without the need for additional hardware or dealer base station access. This next-generation receiver offers faster pull-in times (up to 73 percent quicker than SF3), improved signal tracking through multi-constellation support (GPS, GLONASS, BeiDou, Galileo), and seamless performance even near tree lines or field obstructions. SF-RTK simplifies the customer experience by eliminating the complexity of switching base stations between fields, a common challenge with traditional Radio RTK systems.

 

What does SF-RTK do?

 

The StarFire 7500 utilizes four GNSS satellite constellations, which are corrected through John Deere’s StarFire network to provide sub-inch horizontal accuracy. This provides customer’s our highest accuracy level, along with long-term repeatability (where applicable) to enable advanced guidance features and the confidence that guidance lines and boundaries won’t shift from year to year.

 

Why should customers use SF-RTK?

 

Customers are continually looking for simplified solutions that deliver the value needed for their operation. SF-RTK offers a lower cost of entry for customers compared to Radio RTK, making this solution an easy decision for customers looking to use a high precision correction signal. Why pay for additional hardware, permanent licenses and base station access fees when SF-RTK only requires a yearly license to operate on your StarFire 7000 or StarFire 7500 receiver.

 

SF-RTK vs. Radio RTK vs. Mobile RTK (on a StarFire 7500)

 

Requirements to use SF-RTK

1. StarFire 7500 Receiver
2. SF-RTK 1-year license

Requirements to use Radio RTK StarFire 7500 Receiver RTK Radio RTK Permanent License Access to dealer base station network or additional StarFire receiver and radio required for each base station if producer owned Dealer fee for accessing RTK Network

Requirements to use Mobile RTK (through 4G LTE Modem). Availability limited to select countries. StarFire 7500 Receiver John Deere Mobile RTK Modem (4G LTE) RTK Permanent License Bring your own SIM card with data plan (fee to access local cellular network) RTK Correction Data Provider (fee sometimes required)

Choosing the right correction mode

	SF1	SF-RTK	RTK
Documentation	X	X	X
AutoTrac™ automated steering	X	X	X
Section Control	X	X	X
Overlap control	X	X	X
AutoTrac RowSense™ system	X	X	X
AutoTrac Turn Automation	—	X	X
AutoTrac Vision Guidance	—	X	X
Machine Sync	X	X	X
In-Field Data Sharing (guidance lines sharing)	—	X	X
AutoPath™ software	—	X	X
AutoTrac Implement Guidance	—	X	X
Land leveling	—	—	X

StarFire 7500 and StarFire 7500 Integrated Receiver horizontal pass-to-pass accuracy:

• SF1: +/- 15 cm (5.9 in.)
• SF-RTK: +/- 2.5 cm (1 in.)
• RTK Radio: +/- 2.5 cm (1 in.)

Pull-in time		Pass-to-pass accuracy
StarFire 7500 – SF1 About 8 minutes
StarFire 7500 – SF-RTK 8 minutes or less
StarFire 7500 Integrated – SF-RTK 8 minutes or less
StarFire 7500 – RTK Less than 1 minute

The StarFire 7500 Receiver offers a new correction level with accuracy like RTK Radio. The SF-RTK correction level provides 2.5-cm (1-in.) horizontal accuracy without the need for additional hardware. This is an improvement of 17 percent from the previous generation of StarFire receiver with SF3. The SF-RTK signal uses two additional satellite constellations (BeiDou and Galileo) as well as both GPS (United States) and GLONASS (Russia) satellites.

 

The StarFire 7500 and StarFire 7500 Integrated Receivers simultaneously track correction signals from up to three StarFire correction satellites. The receiver tracks and uses correction signals from all StarFire satellites in view and intelligently chooses one that delivers the best performance. When the receiver moves into an area where the primary StarFire signal is blocked, such as near a tree line, the receiver automatically switches to an alternate StarFire signal (if visible) to help maintain accuracy and performance.

 

NOTE: Compare this to the previous StarFire 3000 Receiver that was only capable of tracking one StarFire signal at a time and could wait up to 4 minutes to initiate the switch to the next available signal.

 

Repeatability defines how accurately the receiver calculates its position over a relatively long-term window.

 

NOTE: SF-RTK uses satellite corrections only and does not require the use of an RTK Radio. RTK Radio may still be required in the following scenarios:

• iGrade™ water management
• Areas with thick tree lines or obstacles that could cause shading of the receiver
• Long-term repeatability in countries we cannot guarantee SF-RTK repeatability (see list under SF-RTK repeatability)
• Land leveling

John Deere Mobile RTK Signal is now compatible with the StarFire™ 7500 Receiver. John Deere mRTK is ideal for customers needing precise navigation in situations where direct line of site to satellites is impeded by dense tree areas and/or hilly terrains, such as a golf course.

 

This solution utilizes RTK correction data from the John Deere Mobile RTK network. A machine equipped with a John Deere Modular Telematics Gateway (MTG) and JDLink™ connectivity enabled can connect through the JDLink cellular network and John Deere Mobile RTK network to get repeatable RTK correction data wherever the coverage of both networks is available.

 

Requirements

 

John Deere Mobile RTK Requires:

• StarFire 7500 Universal or Integrated Receiver
• John Deere MTG with JDLink Connectivity Enabled
• John Deere RTK Permanent License
• John Deere Mobile RTK Signal Renewable License

Coverage Map

 

John Deere Mobile RTK Network Coverage can be found at the link below.

 

https://my.jdmrtk.com/network_coverage.cfm

Introducing the new StarFire Receiver Locking Brackets – Our latest innovation features robust metal brackets and components, replacing the older plastic parts. This upgrade significantly enhances the receiver’s security, making it much harder to dislodge. The new and improved locking bracket provides added protection against theft and vandalism. The new design allows for a customer-provided 5/8-inch tubular hitch lock, offering superior safety compared to the previous universal key system.

Locking your StarFire receiver provides enhanced security and peace of mind. By securing the receiver with a robust locking mechanism, you significantly reduce the risk of theft or tampering. This ensures that your equipment remains in place and functions reliably, ultimately protecting your investment and maintaining the integrity of your operations.

Included components

Please note that the locking bracket kit does not include the receiver hoop bracket and tubular hitch lock. Here are the parts that are included:

Many factors contribute to the time it takes to achieve desired accuracy from the StarFire™ receiver. Global Navigation Satellite System (GNSS) signal quality can be a contributor, especially when multipath errors occur. Multipath errors occur when satellite signals reflect off nearby surfaces. When the receiver antenna captures a multipath signal, it takes time for the receiver to filter out actual GNSS signal directly from the satellite versus reflected signal from a nearby object. This contributes to the time it takes to achieve desired accuracy.

The choke plate hardware in the StarFire 7500 Receiver more accurately directs GNSS signals into the antenna. With the addition of this choke plate, there is a 73 percent reduction in the time it takes to acquire an SF-RTK correction signal from previous generations of StarFire receivers. This means you have more time to be productive and get the job done quicker.

 

The StarFire 7500 and StarFire 7500 Integrated Receiver use an integrated terrain compensation module (TCM) to adjust the calculated machine position based on the terrain on which it is operating. The TCM adjusts for roll, pitch, and yaw motion to improve receiver and AutoTrac™ system performance when operating in challenging conditions such as hilly ground.

• TCM ensures accurate Section Control and AutoTrac guidance performance.
• TCM provides input data such as pitch to systems like the ActiveYield™ monitoring system on combines.
• The StarFire 7500 Integrated Receiver comes factory calibrated, ensuring the highest possible performance and precision.

Advanced TCM Calibration

As accuracy and repeatability continue to be more important to get to plant-by-plant accuracy, the systems in place today must evolve to enable this capability. Like the StarFire 6000 and StarFire 7000, the StarFire 7500 offers an Advanced TCM Calibration feature.

 

Benefits:

• Removes the guesswork out of positioning a machine and implement in the exact same spot when turning around.
• Removes the need for a level surface.
• Adds higher precision to the TCM calibration by gathering and comparing multiple points.
• Calibrates both the machine and implement receiver TCM at the same time.

How it works:

• Roughly 100.6 m (330 ft) of space is required for the calibration.
• During the calibration, speed should not exceed 6.4 km/h (4 mph).
• If an error occurs during the calibration, the operator is notified.

• Select Advanced TCM Calibration from the device list in the display.
• Follow the on-screen prompts to set up a guidance line.
• Drive the guidance line using AutoTrac automated steering from point A to point B.
• Manually turn and resume AutoTrac steering, driving the guidance line back to point A.

This completes the calibration.

Scintillation Indicator

StarFire™ 7500 has added several improvements to enhance resilience during periods of solar activity and geomagnetic storms (scintillation). A ‘Scintillation’ indicator* has been added to the ‘Health’ tab to help visualize periods of moderate to severe scintillation.

 

*Only available when Flex RTK is engaged. See OM for more details.

This indicator provides a visual for the current scintillation environment, categorized into the following levels:

• Green: No/low scintillation. Minimal impact expected, signal quality remains stable.
• Yellow: Moderate scintillation. Some signal degradation may occur; users may notice brief interruptions.
• Red: High/extreme scintillation. Likelihood of signal disruption; performance may be significantly affected.

Benefits:

• Improves operator awareness by providing a clear, color-coded view of ionospheric interference that could impact GNSS signal quality.
• Reduces downtime and confusion by helping users anticipate and interpret signal disruptions, especially during peak scintillation periods.
• Enhances system reliability by triggering alerts and diagnostics when severe scintillation is detected, ensuring proactive response.

With the StarFire™ 7500 Receiver and SF-RTK correction level, you can have confidence from year to year that your guidance lines and boundaries will stay where they need to be.

 

StarFire 7500 and StarFire 7500 Integrated repeatability:

• SF1: no repeatability, position drifts over time
• SF-RTK: +/- 2.5-cm (1-in.) long-term repeatability (where applicable, see above SF-RTK repeatability section)
• SF-RTK repeatability claims are only valid after the receiver has completed a full pull-in and is operating at 100 percent accuracy.
• RTK Radio: +/- 2.5-cm (1-in.) long-term repeatability
• RTK Radio repeatability specifications are based on a properly installed RTK base station and a base station position that has not been modified after initial setup.
• John Deere Mobile RTK: +/- 2.5-cm (1-in.) long-term repeatability
• John Deere Mobile RTK: A machine equipped with a John Deere Modular Telematics Gateway (MTG) and JDLink™ connectivity enabled can connect through the JDLink cellular network and John Deere Mobile RTK network to get repeatable RTK correction data wherever the coverage of both networks is available.

NOTE: Repeatability may be impacted by large unpredictable geological events such as earthquakes.

Value of repeatability

Repeatability defines how accurately the receiver calculates its position over a relatively long timeframe. Repeatability is measured at the receiver and does not take into account additional error sources such as AutoTrac™ control system error, ground conditions, or implement drift.

 

In-season repeatability and using the same correction signal are critical when using AutoTrac for multiple jobs throughout the growing season. This includes creating AutoTrac guidance lines during planting and then relying on those same lines for subsequent tasks such as side dressing fertilizer, post-emerge spraying, and harvesting. Maintaining the same correction signal ensures alignment accuracy across all operations, minimizing overlap and skips while maximizing efficiency.

 

Long-term repeatability is critical when mapping interior and exterior boundaries for later use as input to John Deere Section Control on planters, sprayers, and fertilizer applicators. It is also critical for growers that use the same AutoTrac guidance lines over multiple seasons for operations like subsurface-drip irrigation, controlled traffic, or alternating planter spacing between the rows from a previous season.

• Better accuracy and more reliable RTK
• Fast startup and shading recovery times, less line jumps, and more reliable performance under shading environments
• Better RTK-X performance compared to StarFire 6000 or StarFire 3000 Receiver base
• Vertical accuracy improvement

NOTE: Data collected when running a StarFire 7500 Receiver base with a StarFire 7500 rover.

NOTE: RTK Radio still requires the use of a compatible radio.

Drop-in replacement

As John Deere continues to advance their technology, the StarFire™ 7500 receivers are designed with modular components, making the unit a drop-in replacement for the previous generation of integrated receiver. You never have to worry about having outdated hardware.

Serviceability

The StarFire 7500 Universal Receiver has more than 20 parts that are completely serviceable. In the unlikely event that there is a problem with the system, many of the individual components can be replaced without replacing everything. This saves you time and money that can be used in other areas of your operation.

Shared signal enables the pairing of two receivers and facilitates communication between them to improve relative system accuracy when utilizing AutoTrac™ Implement Guidance (ATIG), Active Implement Guidance™ (AIG), Machine Sync, or AutoPath™ (AP) advanced precision ag technologies.

 

Supported configurations:

 

The following receivers are compatible with shared signal and can be used interchangeably.

• StarFire™ 7500 Receivers
• StarFire 7000 Receivers
• StarFire 6000 Receivers

NOTES:

• StarFire 3000 Receivers are no longer a supported configuration with Machine Sync. As part of our ongoing commitment to enhancing our products, we are discounting support for Gen 4/G5 Machine Sync with StarFire 3000 Receiver, starting in May of 2024. See DTAC solution 224346 for more information.
• When using shared signal in a Machine Sync scenario, the system matches the correction signal from the leader, so the leader must have the higher correction. The follower may have a lower correction signal, and the overall system accuracy will reflect that of the leader.
• Similarly, when using shared signal in an AutoPath and/or AutoTrac Implement Guidance scenario, the system matches the correction signal from the tractor, so the tractor must have a higher correction signal than the implement mounted receiver. For AutoPath operations, correction signal of SF3 or higher must be present.

 

Leader Examples: The tractor running ATIG, AP, or AIG, or the combine/pull-type harvester using Machine Sync.

 

Follower Examples: The implement that is part of an ATIG, AP, or AIG operation, or the grain cart tractor in a Machine Sync operation.

Machine Sync

To ensure optimal performance and compatibility, always update receivers to the most current software version available on the StellarSupport™ portal. The leader and follower must be on the same software version. The following table describes the accuracy expected from this system:

 

Leader receiver activation level	Follower receiver activation level	Overall system accuracy level	Machine Sync Compatible
SF-RTK/SF3	SF1	SF-RTK/SF3	Yes
RTK	SF1	RTK	Yes
RTK	SF-RTK/SF3	RTK	Yes
SF-RTK/SF3	RTK	SF-RTK/SF3	Yes
SF1	RTK	SF1	Yes
Mobile RTK Signal*	SF1/SF3/ SF-RTK	RTK	Yes

*John Deere Mobile RTK is not available on the StarFire 7000 receivers.

Overview

Operators using StarFire™ 7500 Universal Receivers in proximity to GlobalStar-enabled pivot controllers may experience AutoTrac™ disengagement due to signal interference. To address this, John Deere now offers the BPF12660 stub filter, a hardware solution that blocks disruptive frequencies and ensures uninterrupted AutoTrac™ performance.

• Problem
  • GlobalStar pivot controllers transmit at 1611 MHz, overlapping with the L1 GLONASS band (up to 1609 MHz). This overlap can cause signal degradation or loss in StarFire receivers, particularly affecting AutoTrac™ functionality.
• Solution
  • The BPF12660 stub filter is engineered to block these interfering signals, preserving the integrity of the GNSS signal and maintaining AutoTrac™ engagement. This solution is compatible with StarFire™ 7000 and 7500 Universal Receivers operating in North America.

Customer Benefits

• Reliable AutoTrac™ performance in high-interference environments.
• Simple retrofit for customers operating near GlobalStar-connected pivot systems.
• Improved customer satisfaction through reduced downtime and enhanced precision.