Data are presented for a three year K(u)-band propagation experiment i
n Surabaya, Indonesia. This measurement campaign was executed by the E
indhoven University, of Technology and the Institute of Technology Sep
uluh Nopember. Because the measurements were carried out with a beacon
receiver and a radiometer simultaneously it was possible to derive th
e medium temperature. In addition, the measured results are compared w
ith predictions using the 1991 Rec. 618 procedure of the RS (formerly
the CCIR).