Oblique incidence propagation at 300 kc using the pulse technique

The results of an oblique incidence pulse experiment at 300 kc, using a path length of 1,185 km over sea-water, are presented. These consist of median time delays of sky wave vs surface wave for March, April, and May, 1951, together with pulse envelope photographs of typical pulse groups, continuous film recordings of surface- and sky-wave pulses, a plot of sunrise transition times, and a discussion of the sunrise conditions.