Sokkia R4S-BT Radios


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Radio designed to offer superior RTK performance with the GCX3


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First-class Connectivity

R4T-BT is an innovative external radio designed to offer superior RTK performance with the GCX3 GNSS receiver.

This unique solution with integrated batteries features Bluetooth® communication. The R4S-BT is an external UHF option for extending the RTK range of the GCX3 GNSS receiver.

Like all of our products, you can customize it to meet your needs and create your own workflows.

 Features include:

• Wireless modem configuration and data transfer via Bluetooth®

• Light, weighing only 420 g

• Long operational time of 20 hours in receiver mode

• Transmit Mode: 6 hours at 1 W

• IP67 Rating

Extend your range

The R4S-BT combines a UHF radio, Bluetooth, and an internal battery all together in a rugged IP67 classified housing. If you need to extend the communication radio range between your GCX3 RTK Base Station and Rover, the R4S-BT is a perfect fit.

Get more out of your existing equipment

If you already have a GCX3 LongLink™ RTK system but find yourself on a bigger job site or without a clear line-of-sight, you’re now able to extend the range from 300 meters up to a mile.  No additional OAF upgrade or purchase is necessary.

Stay connected

The R4S-BT is perfect in situations without a network connection, or where network or cellular connections are poor. Simply add on this external UHF radio and extend the range between the base and rover.

Ready for the field

With an IP67 certification, the R4S-BT is ready to tackle even the toughest jobs. The housing is water and dust proof for rough outdoor conditions.

Stay charged

The 7200 mAh battery lets you get more done on the job without the need to recharge during the workday. You can get 20 hours in receive mode and 6 hours in transmit mode at 1 W.

Affordable and upgradable

By using the R4S-BT, you get one of the most budget friendly UHF base and rover options available. It provides a low-cost way to upgrade your LongLink GCX3 to a full range UHF rover.

Light and versatile

Even though it’s built to withstand the harshest of environments, weighing in at only 400 g, the R4S-BT is light and easy to carry and mount. The R4S-BT also offers flexible mounting options.


Additional information

Weight 5 lbs


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