RTK Base - Is it possible to use multiple base station in ardupilot?

Is it possible to use multiple base station in ardupilot? if yes how? and also how far can rtk correction data will work perfectly for rover?

Do you know the meaning of Ardupilot Swag?

No, I don’t have any idea about that. what is it? and how it works?

This thread is for Ardupilot T-shirt’s, Coffee Mugs, things like that. Nothing at all related to what you posted. Choose the Appropriate Rover thread.