Slowly varying local solar decameter sources?

Local sources of the slowly varying component of solar radio emission have been observed at centimeter and decimeter wavelengths, and (less reliably so) in the meter-wave band. Claims have been made by several authors (Kundu et al., 1977; Sastry et al., 1983) that slowly varying decameter sources have been recorded. However, analyses of the solar radio emission data taken between l973 and l976 with the UTR-2 antenna at the Ukrainian Radiophysics Institute (and including the emissions during the solar eclipse on April 29, l976) indicated that both the emergence of the source on the sun and the rise in solar brightness temperature after the burst were not due to a slowly varying component.