There are other radio-based options for transmitting corrections, and each option has certain advantages and disadvantages over UHF radios. All of these properties are very desirable for single reference station RTK setups and provide an out-of-the-box solution for transmitting corrections. Commercially available 35W positioning UHF radios are most often chosen to transmit corrections because the coverage area they establish can be extensive, they are able to work in most remote and urban environments, and they are fully supported within data collection software. In today’s plugged-in world where it seems that nearly everyone has a personal mobile device that provides 24/7 connectivity to the internet, it is surprising how many surveying companies still primarily use (often illegally unlicensed) UHF radios to transmit differential GNSS corrections.

Some newer GNSS receivers come with IP and NTRIP (read on for details) capabilities as standard features, but with a little ingenuity and some free tools you can IP-enable nearly any RTK receiver to do this. Of course, this only works in areas where cellular or other wireless internet coverage is available. Whether your corrections are for a base you have mounted on a building or at a site or even for a short RTK session, they can be delivered over IP. But RTN is not the only way to leverage corrections over IP. The advent of network RTK (RTN) introduced many surveyors to the relative freedom of using cellular, broadband, or other IP- (internet protocol-) enabled mobile communications to transmit and receive RTK corrections. The short leash of base-rover radios, not to mention licensing issues, can be a major source of pain for your field operations.

It's not a system for a farmer who has the local precision specialist on speed dial but if you're familiar with the tech it's the cheapest and most reliable method of sub inch accuracy.Editor’s note: Communications for base-rover RTK corrections can be problematic.

I'm feeding NMEA data to Agleader displays running Ontrac 2+ for steering. Two boards with antennas were less than $1000 and use any of the GPS constellations on L1 and L2. Lefebure NTRIP client can be used on your phone to connect to whatever you have in the cab. The SNIP software they recommend is free to use for a single caster. They will host your Ntrip caster for free as long as you allow it to be open for anyone to use. Posted 10:57 (#7463236 - in reply to #7463196) Subject: RE: What does it take to NTRIP from my own base station? What does it take to NTRIP from my own base station?

Free ntrip caster software