Fixed Base RTK

LH Agro’s bespoke RTK fixed base solution incorporates a Topcon GB-3 survey grade G3 RTK receiver with a G3-A1 antenna, linked to a 35W Digital UHF radio transceiver and 6db gain omni-directional antenna giving ultimate coverage across the base operational area*.

The Topcon GB-3 features the latest 72 Universal Channel G3 Technology capable of receiving signals from all present and future satellite constellations GPS, GLONASS and Galileo. The GB-3 can be configured to output either CMR or RTCM 3.0 correction packets.

The Topcon GB-3 and UHF Radio Transmitter are housed in a fan cooled IP67 enclosure together with a battery backed up power supply system (UPS) giving uninterrupted RTK correction transmission. With optional remote monitoring SMS technology you can be assured your RTK base is always online.


  • G3 dual frequency receiver/antenna
  • 72 channels, GPS, GLONASS and Galileo
  • 35W Digital UHF Transceiver
  • 6dB Gain Omni-directional antenna
  • Uninterruptable Power Supply (6-8hrs back up battery)
  • Fan Cooled IP67 enclosure
  • Optional – SMS remote monitoring and control.


As part of the RTK fixed base package we can offer a variety of different mast options to cater for your location. From building mounted where we mount to an internal vertical RSJ, to grain storage/silo facilities where we mount to the supporting steel framework to free standing lattice mast where no structure is available, we have a solution to meet all locations.

*Note – high power radio and 6dB antenna operation requires Ofcom business radio license

GSM Networks

The Snap In RTK modules GSM modem incorporates NTRIP capability (Network Transport of RTCM via Internet Protocol) which lets you tap into existing reference networks via mobile phone connection (depending upon local availability). Often know as “Network RTK”. The in built GSM modem works with a wide range of the UK’s mobile phone networks both contract and pay as you go, so you can choose the network that gives you the best reception in your area.

Step by step guide to finding the right precision solution for your farm business.

Step 1. Select application

Step 2. Select your machine



Step 3. Select precision solution