The Finnish-Hungarian Doppler Observation Campaign was carried out in Finland in Aug. 1983 during 13 days. The campaign was organized by the Finnish Geodetic Institute with financial and manpower support of field work. Three Hungarian JMR-1A receivers and one Finnish JMR-4 occupied 9 stations together with the 1st order triangulation network points of Finland. The data processing was performed in SGO, Penc. The observation strategy, the methods of data processing and results obtained by GEODOP and SADOSA programs as well as the S-transformations are presented in this paper.