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SE MN | ...a little late to the party, but I wanted to add my perspective to the discussion, as I've had similar questions.
To start with, I've been using the Minnesota CORS network for RTK correction for at least 10 years, and I don't have experience with other correction options. I concur with the concensus of responders to your question, in that using your state's CORS network is the lowest cost method of obtaining RTK corrections, which is why I've been using it for years.
I originally started with a Raven Slingshot, which went the way of the dinosaurs when 3G cell networks were discontinue. From my remembrance, the Raven Slingshot with an account worked fairly well. So when it came time to replace the SlingShot with a 4G version, rather than purchasing a new Raven Slingshot 2.0, which is a Sierra Wireless modem with some proprietary firmware installed, I simply found a used Sierra Wireless Airlink GX450 modem (identical model to SlingShot 2.0) for much less $$! There are other brands that would likely work as well.
Actaully, I've been using two of these modems with two different systems: Trimble FMX w/AG25 & EZ-Steer system and Ag Leader InCommand 1200 w/Novatel Receiver/antenna.
Some caveats about where we farm - we are on higher, rolling ground with generally very good cell & satellite reception. Some comments on both systems...
The FMX system is being used in a planting tractor (MX200). I've noticed, in the past number of years, that we've lost RTK corrections on occasion, which is frustrating, even with X-Fill engaged. Needless to say, we still use our markers most of the time when planting corn, just in case.
The InCommand 1200 system is employed in our CIH 4430 sprayer in conjunction with a Capstan PinPoint III Envelop system. It works better, I suspect, because the antenna/receiver are a number of years newer than FMX/AG25. Nonetheless, I occasionally lose RTK corrections, which, when using individual nozzle control, is problematic.
I'm not sure if the increased solar activity in the past few years is to blame for this, or not. The our state's CORS network does have occasional issues, perhaps a only few per year - not a big deal... except when you really need it.
In summary, I've been satisfied enough with using the CORS network that I would give it a B+ grade.
For those who have the latest DigiFarm equipment, have you felt it's well worth it? What is DigiFarm providing that the CORS network is not providing?
Edited by MNchurchmouse 4/5/2026 20:58
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DigiFarm or CORS?
