Solar Radio Observations at HF for 02 May 2012
Where needed, additional descriptive information is provided below the images. No audio is available for these charts.
The solar burst shown above starting at 2015:45 was preceded by a burst of radio frequency interference (RFI). The frequency sweep nature of most solar bursts is evident with the higher frequency peaking before the lower frequency. There is an interesting dip in the background noise at about 2018, cause unknown.
The solar burst shown above was weak and almost not discernible at 19.6 MHz but can be seen at 32.5 MHz.