Observations of Extragalactic Sources at 5 GHz using the Green Bank (91m diameter) radio telescope are reported. Spectral indexes are computed using the observations of the sources from the Arecibo 611 MHz catalog (1983 ApJS, 51, 67) [4] .
VLA observations at 5GHz of "blank" fields are reported in order to determine the number density of sources and compared to the standard model in cosmology (1983 Nature, 301, 686) [5] .