Sokkia RTK OAF Options for GRX3 GNSS Receiver
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Sokkia RTK OAF Options for GRX3 GNSS Receiver

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The RTK OAF Options for Sokkia GRX3 GNSS Receiver is an essential tool that works with your GRX3 GNSS receiver. This Option Authorization File (OAF) enables to easily customize and program the receiver depending on the professional or surveyor’s needs. It also offers particular features that suit any required task.

Please Note: This is only a software license. The Sokkia GRX3 GNSS Receiver is sold separately.

Configuration Options

The RTK OAF Options for Sokkia GRX3 GNSS Receiver offers eight modules with varying features to suit any needs. Choose from the menu above.


  • 1030773-01: OAF+, GGD, BDS, Galileo, GPS L5, GLO L3 10Hz Net + LL RTK (226 Ch)

This OAF for RTK receivers is used in L1 and L2 RTK that enables both Network RTK solution and LongLink Bluetooth communication. This combination is a great feature for a real-time layout.


  • 1030774-01: OAF+, GGD, BDS, Galileo, GPS L5, GLO L3 10Hz Radio + LL RTK (226 Ch)

Used in L1 and L2 RTK, this OAF is used for two receivers (base and rover solution).


  • 1030769-01: OAF-U, Add L2 to GG L1, 1Hz Static


The OAF upgrade for RTK receivers that combines the GPS and GLONASS signal reception.


  • 1030782-01: OAF-U, GRX3 Add TILT

This OAF upgrade uses the Topcon Integrated Leveling Technology (TILT) that measure the parameters from the Hybrid Inertial Measurement Unit (HIMU) module, receiver navigation coordinates from the GNSS firmware, and a magnetic field map for calibrating tilt angles on a horizontal plane.


  • 1030778-01: OAF-U, GRX3 BDS

This OAF upgrade supports BeiDou Navigation Satellite System that consists of 35 satellites and provides global GPS services.


  • 1030777-01: OAF-U, GRX3 Galileo

This OAF upgrade that gives horizontal and vertical position measurements within one-meter accuracy, and better positioning services at higher scopes.


  • 1030776-01: OAF-U, GRX3 GGD 10Hz to 20Hz RTK

This OAF upgrade is used mostly for RTK solutions when doing real-time layouts.


  • 1030781-01: OAF-U, GRX3 GPS/SBAS L5 & GLO L3

This OAF supports the wide-area or regional scale by using geostationary (GEO) satellites for broadcasting the signal increase.

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Shipping & Returns

Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

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