Radio Astronomy at the Meudon Observatory

This paper describes the principal instruments used for radio astronomical observations at the Nancay field station. They are a variable spacing interferometer made of two 7.5-meter mirrors movable on rail tracks, several radio-telescopes and interferometers for solar research at 3-cm wavelength, and a 32-antenna interferometer operating on the wavelength of 177 cm. The second part of the paper gives some new results concerning the sources of solar radio emission and a phenomenon of scintillation at 3-cm wavelength apparently caused by the troposphere.