Design and Performance of V.H.F. receiving equipment for reception of extremely weak signals of solar and Galactic origin in the metre wavelength region

Abstract

Three V.H.F receivers of high gain stability and low internal noise designed and constructed at the Kodaikanal Observatory are described. The receivers which operate at 1 1/2, 3 and 5 meter wavelengths are being used for the measurement of extra-terrestrial emission of solar and galactic origin and also for observations of radio-star scintillation. A report on the performance of one of the receivers over long periods together with details of aerial systems used and calibrating equipment is also given