Feasibility of feeding DGPS data to Navio via radio?

Hi all, I’m thinking about using the 3DR radio modem to transfer the DGPS data to Navio in RTK, is that feasible? If anyone has done this I’d love to have some advice. Also according to 3DR the radio’s range is around 1km, but I’d love to have a range about 2km. Do you guys have any recommendation? I’m in US so I can’t use the 415mhz model. Thank you a lot!