I have a situation coming in the near future. I am based at an airport in the mode C vail of class B airspace. I am at a non controlled field. My Glasair is equipped with ads-b mode S transponder. I have no way to get the transponder checked out before the first flight and in fact the closest place to get it checked will not be within the radius for the fly-off. For most of the fly off period I fly out of the airspace and not be in the class b airspace, but I will be for every take off and landing during that time and I will be for the entire first couple of flights over the airport. Suggestions?