have a few hours per night of useful recording through the ionospheric aquot;windowaquot; at 18.5 mc. ... The determination of antenna aperture requires knowledge of the antenna polar diagram and the efficiency of the reflecting surface. ... of reflecting wires. ... Comprehensive tests have been conducted to intercompare the noise power of conventional noise diodes with that of ... of 1956, it was possible to determine flux measurements for Virgo at 26.75 an^ I^-5 mc, and for Taurus A at 26.75 mc.
|Title||:||Annual Report of the Director, Department of Terrestrial Magnetism|
|Author||:||Carnegie Institution of Washington. Dept. of Terrestrial Magnetism|