• Auroral zone absorption of radio waves transmitted via the ionosphere

      Andersen, Soren; Leonard, Robert S. (Geophysical Institute at the University of Alaska, 1955)
      A discussion of the design for a new antenna system for the transmitter stations is presented together with the measurements and power computation made on the old and new antennas. In the 12 mc back-scatter program at College, the technique used to measure the amplitude of each individual echo and reanalysis of the range distribution previously reported are discussed. Revisions in the techniques of observation of visual auroras and the methods of recording the data for analysis are described in detail.