Trimble xFill

RTK-Based Correction Service

Backup Coverage for Network Connection Issues


Trimble® xFill® runs seamlessly in the background automatically bridging the gap if a users RTK or VRS correction source is interrupted due to cellular signal disruption or loss of radio connectivity

Better Uptime


Dropped signals are a thing of the past. xFill ensures you’re always on and working without interruption if there’s a network failure.

Multi-Satellite Support


GPS, GLONASS, Galileo, BeiDou, and QZSS enabled for ultimate reliability and performance, worldwide.

Work Everywhere


Satellite coverage makes Trimble xFill available worldwide – providing reliable back up in remote locations or areas with poor cell coverage.

Powered by Trimble RTX technology, Trimble xFill leverages real-time data from a global tracking station network along with innovative positioning and compression algorithms to compute and relay satellite orbit, satellite clock, and other systems adjustments to the receiver, resulting in the real time high accuracy positions. These adjustments are transmitted to the receiver via satellite (where coverage is available).

When turned on, the receiver tracks the RTX (L-band) satellite as well as every satellite in its field of view including, GPS, GLONASS, Galileo, BeiDou and QZSS satellite constellations. From the L-band satellite, you will receive the RTX real time correction stream that allows you to calculate your position to high accuracies, without the need of a base station.


Trimble xFill® satellite delivered corrections seamlessly engage if RTK radio or cellular/IP connectivity is lost – allowing you to stay in the field longer and without interruptions.

Service Options:

Standard xFill

Free for the first 5-20 minutes (application dependent) after the loss of an RTK correction source on all compatible devices.

xFill Premium

Works indefinitely on the Trimble AG-372 and Trimble TMX-2050 display with an xFill Premium subscription.

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