In their letter to Deere & Company, the state officials and farmers argue that LightSquared's network could improve Internet access in rural areas.
"Your attacks on LightSquared could prevent our families from reaping the benefits of this new network," they wrote.
They urged Deere to pay to modify its GPS devices so they will work in the presence of LightSquared's signal.
"Rural Americans deserve the ability to purchase both GPS and wireless broadband devices. Our families need both technologies for an equal shot at the American dream. As your customers, we ask that you take responsibility for repairing your equipment rather than trying to stop an innovative wireless company from making life better for the American people," they wrote.