Observatorio Astronomico Nacional, Cerro Calan, Departamento de Astronomia, Universidad de Chile, Casilla 36-D, Santiago, Chile.
The observations of 1172 Stars belonging to the Fifth Fundamental Catalogue, FK5 Stars, in the declination zone from +40° to -90° in upper culmination and from -90° to -68° in lower culmination were included in the observing programme of Radio Stars with the Repsold Meridian Circle at Cerro Calan (lambda = 4h 42m 10.7s W, phi = -33 ° 23' 50'').
Series of differential observations along the whole meridian arc, 4 ÷ 5 hours long were made applying the ''quasi-absolute method''. The target of the observations of all stars beloging to the Fk5 Catalogue south +40° is to improve the System of the Fk5 in the Southern Hemisphere, due that systematic errors have being determined specially in our Hemisphere.
The results of the observations made from May 1994 to March 1996 are presented. The mean internal error of the position of one star is ± 0.10''.