These are the WR-3 from Conversion Research, P.0. Items 4 and 5 are even less reliable, but there are a number of experiments that can be easily accomplished in these bands. Sudden noise level changes have been reported at radio frequencies. These are often correlated with sunspot activity and fluctuations in the solar wind. The same is true for sudden drops.
Much more experimentation is needed.
Generally, investigators monitor world-wide beacons on the ham bands and plot signal strength. This is not proven, but I have toyed with this myself and there do seem to be changes in apparent frequency. Besides the receiver, the data storage mode is another bottleneck. It becomes quickly obvious when monitoring real-time transients that an automated display or data capture mechanism is needed. The only caution is that most Geo-Monitor readers are on a limited budget, so data storage must be low cost and efficient.