A Dynamic Spectrum Analyzer for Solar Studies

A spectrum analyzer of the type originally built by Wild, et al. is described. The analyzer covers the range of 90 mc to 580 mc at a rate of 3 sweeps per second in three overlapping bands. The output information is presented on three high-resolution oscilloscopes in a frequency-intensity display, and the time axis is provided by the continuous motion of the film used to photograph the displays. Modifications and improvements are suggested.