GUCY2C receptor ligands conjugated to diagnostic andor therapeutic moieties, methods of making such GUCY2C receptor ligands conjugates, and methods of using such GUCY2C receptor ligands conjugates, such as in the diagnosis andor treatment of Parkinson’s disease, are described. The surface state is realized by alternating electrolytic etching in a ferric chloride solution. Multiplexing the \xbd enhanced data packet and the \xbc data packet by grouping increases the reception performance of the \xbc enhanced data. Further, since an additional filter is not required in the antenna device, the circuit structure can be simplified. According to the invention, the cells are of essentially hexagonal shape and are divided in four 900 sectors, a first of two delineation lines of the sectors being obtained by rotating a diagonal of said hexagon by 45 around said base station, the other delineation line of the sectors being perpendicular to the first delineation line. The adjustment of the sample measurement is thereby improved by reducing the effects of artifacts of the measurement device.