Search Results for "monitor tools"

sidmon is a python program for receiving and recording submarine-transmitter signal intensities and directions in the VLF frequency range using a computer sound card. The intensities of these signals reflect the ability of radio waves at those wavelengths to propagate in what is essentially a waveguide formed by the earth and the ionosphere above it. Fluctuations in those signal intensities and directions often reflect daytime perturbations of the ionosphere by solar processes, such as...