Carlson BRx7 RTK GNSS Receiver with IMU Tilt Compensation

The Carlson BRx7 is a professional multi-frequency, multi-constellation GNSS receiver designed for high-precision positioning. It can be used as an RTK network rover, a local base station or part of a base-and-rover surveying system.

The BRx7 is designed for land surveyors, construction professionals, civil engineers, site engineers, utility contractors, mapping specialists and other users who require dependable centimetre-level positioning in the field.

Typical applications include topographic surveys, cadastral surveys, construction stakeout, machine and site control, as-built measurements, utility mapping, earthwork verification, road construction, infrastructure projects and GIS data collection.

Yes. The BRx7 can operate as a network rover, a standalone RTK base or a rover receiving corrections from a compatible base station. The required configuration, communication method and accessories depend on the selected workflow.

Yes. The receiver can connect to compatible NTRIP, VRS and CORS correction services through a cellular or internet connection. Access credentials, mobile data coverage and a correction-service subscription may be required.

Yes. When connected to compatible field software, the BRx7 can be used to stake out points, lines, surfaces, grades, alignments and design positions. It can also record completed work for as-built documentation and quality control.

With a fixed RTK solution and reliable correction data, the BRx7 can achieve centimetre-level positioning. Its published RTK accuracy is 8 mm plus 1 ppm horizontally and 15 mm plus 2 ppm vertically under suitable operating conditions.

The BRx7 supports signals from GPS, GLONASS, Galileo, BeiDou, QZSS and NavIC, which is also known as IRNSS. It is also capable of receiving Atlas L-band correction services when the appropriate service is activated.

The receiver has more than 800 tracking channels. This allows it to track multiple frequencies and satellite constellations simultaneously, helping improve satellite availability and positioning reliability.

The published initialization time is less than 10 seconds under favourable conditions. Actual initialization time depends on satellite visibility, correction quality, distance from the base station, atmospheric conditions and the surrounding environment.

The integrated tilt sensor calculates the position of the survey-pole tip when the pole is not held vertically. This allows users to measure inaccessible points near buildings, fences, trenches, vehicles and other obstructions without carefully levelling the pole for every observation.

The published tilt accuracy is approximately 2 cm with a 1.8-metre pole at angles of up to 30 degrees and approximately 5 cm at angles of up to 60 degrees. Performance depends on calibration, pole height, RTK quality and field conditions.

Accuracy can be affected by trees, buildings, machinery, overhead structures, reflective surfaces, poor satellite geometry, weak correction links and long distances from the reference station. Critical measurements should only be stored after confirming the required RTK quality status.

The BRx7 supports cellular communication, UHF radio, Wi-Fi, Bluetooth and serial or USB connections. These options allow the receiver to work with correction networks, local base stations, field controllers and other compatible equipment.

Yes. The integrated cellular modem can be used to receive internet-based RTK corrections or connect to compatible cloud services. A suitable SIM card, mobile data plan, network coverage and correct APN settings may be required.

The BRx7 supports internal UHF radio communication in compatible 400 MHz and 900 MHz frequency ranges. Available frequencies and permitted transmission settings vary by receiver version and country, so local radio regulations must be followed.

Carlson Listen-Listen is a cloud-based correction service that transmits GNSS corrections from a BRx7 base station to one or more compatible rovers through the internet. It can extend operations beyond the practical range and line-of-sight limitations of conventional UHF radio.

Yes. A BRx7 base can support multiple rover connections when used with a compatible communication method and configuration, including supported Carlson Listen-Listen workflows.

The receiver supports commonly used RTCM correction formats, including RTCM 2.1, 2.3, 3.0, 3.1 and 3.2 with Multiple Signal Messages. Compatibility should be checked against the selected base station, correction network and field software.

Yes. The receiver can record raw and static GNSS observations for post-processing, control surveys and quality assurance. Data can be stored in the internal memory or on a compatible microSD card and downloaded through the receiver’s web interface.

The BRx7 is commonly used with Carlson SurvPC and Carlson SurvCE. Its open GNSS interface also allows integration with other compatible controllers, software applications and equipment that support the receiver’s communication protocols.

This product is the BRx7 GNSS receiver rather than a complete rover set. A field controller, surveying software, range pole, mounting bracket, correction service and other accessories may need to be selected separately unless they are specifically listed as part of the chosen configuration.

Yes. The built-in WebUI can be accessed through a compatible web browser using a connected smartphone, tablet or computer. It can be used to view receiver status, change settings, configure communications, download data and install supported firmware updates.

The receiver can operate for up to approximately 12 hours with two fully charged batteries. Actual runtime varies according to radio transmission, cellular use, temperature, battery condition and receiver configuration.

Yes. The BRx7 uses two removable hot-swappable batteries. One battery can be changed while the other continues to power the receiver, helping users continue fieldwork without shutting down the system.

The BRx7 has an IP67 environmental rating. It is sealed against dust and protected against temporary water immersion under the applicable test conditions, making it suitable for demanding outdoor surveying and construction environments.