Trimble 5700 base station

The 5700 should be able to send rtk corrections to your ag receiver. The 5700 is GPS only.  Your ag may be GNSS I don’t know.  You will have to configure both to receive the same message format. So my guess would be to start with a RTCM message type. You would not need rtcm3.0. Because that includes GNSS. Each manufacturer has there own message types but RTCM is a standard. So that should work. Also are you Douthits via a radio or internet. If via radio that could cause some issues if both don’t have the same channel frequency types.  Internet should work fine if you have coverage. 

if decent cell.  An old airline raven modem at both ends worked nicely many years ago. You could assign the one at the base a static IP. And configure the tractor Aka rover end to dial directly to that. I have no idea if those are still supported or not. But they worked great for our clients as you could get a larger antenna for both. So one tall whip mag mounted to tractor cab. And one larger whip at base. 

@olemanriver I really appreciate the response and the advice. Would gps only be adequate for corrections. I’m not wanting to spend a bunch of money or time on something that may not work. When it comes to this I’m ignorant but willing to learn all that I can. I have good cell service I would like to go this route if possible so I wouldn’t need a radio license for the uhf band plus with the foliage wouldn’t be an issue. Thanks again your time

GPS only will work fine on a tractor. Note that if you use a radio with UHF frequencies it must be licensed. An alternative is to use a spread spectrum radio that does not require a license (if I recall correctly). Advantages to spread spectrum are that you can avoid problems if someone nearby is using the same UHF frequency. Disadvantage is a more limited range. Depending on how far you need to go with the corrections and terrain, there are other options other than licensed UHF

For RTK surveying, Spread Spectrum (FHSS) offers interference resistance, no licensing, and brand-specific use, ideal for congested urban areas but with shorter range; while traditional UHF provides longer ranges (miles) with higher power/amplifiers, requires an FCC license, and is best for open sites but struggles with RF noise, with both needing clear line-of-sight for optimal performance. 

@john-hamilton good morning I’m wanting to use cellular. I been reading about using it for a while but one source says do this one says do that I have a sierra AirLink gx450 with all cables for the tractor side. I’m just not to the point of knowing how to connect everything yet gets really confusing

In my experience, watt for watt there is much of a difference in range between UHF and Spread Spectrum.  That being said, about 2 watts is about the most power I've seen in a spread spectrum radio.  They have numerous advantages over UHF including no licensing required (in the US); no interference; smaller batteries with better run times; and multiple easily configured into a web to expand the coverage.

I had spread spectrum radios for my Leica 1200 series receivers.  I gave up on UHF during the that time.  If Leica would have continued that option on the GS16 & GS18 lines still would not be using UHF.

Fun fact, spread spectrum is the brainchild of Hedy Lamarr.

@hillsboro so you are going to need some internet capable device to connect to the base 5700. Historically I used air link modems. Or an extra data collector. It will have to be hardwired into the 5700. So plugged in. No Bluetooth on the 5700. As long as you are not in canopy but in an open sky for your tractor the rover and the base. GPS only is just fine. You should be able to achieve a few inches pass to pass along your rows etc. you probably should save a favorite on your phone of the noaa space weather to monitor that as well are in a up tick of solar activities for next year or so. Sorry for the delayed response back. I been so tied up with work cows kids and home repairs lol. Seems like something was breaking every day during the holidays. Hot water heater well pump well pressure tank. Dog blowed out screen door. Trailer re decking lol. You know life on the farm.

@hillsboro John is spot on on the spread spectrum. That airline thing probably has a web interface or a cable you can configure it so what you will need is one at the base and have a static IP installed for the base. Then it’s really just configuring the rover one tractor side to listen to that static IP i bet they are just a new fangled airline raven modems. You will have to have a cable that connect from that to the base one and configured the base to broadcast out that port on 5700.