About RF Propagation Analytics
The RF Propagation Analytics site demonstrates a practical application of analytics techniques. It lets you see what bands are open now (at least according to spots reported to the DX Cluster) and trends (both under the Activity button), can show maps of spot locations (both in flat Google map or Robinson projection), and lets you search for stations that have been reported or submitted reports (to DX Cluster).
How It Works
The server checks the DX Cluster every minute to see what new spots have been reported. It gets the latitude and longitude of each spot (if available in QRZ.com) plus the solar flux at the time (if lat-long is not in QRZ, the country is determined based on callsign and the lat-long of the capitol of the country is used). It saves the spots in a database. The database is then used for searching and mapping functions. DxDisplay is a service to demonstrate high speed analytics, provided by The University of Alabama Center for Advanced Public Safety, in conjunction with HamSCI. See the Documentation for results of various studies of the historical data in the database.
See also QRZ.COM article about the system: QRZ.com article
In May of 2017, an additional data collection function was added to collect a sample of WSPRNet data. The intent is to allow users to apply some of the same data visualization to WSPRNet data as done with the DX Cluster data, and also to allow data analysis that combines the two for increased analytics power. The data collector runs once per minute and collects 50 spots from WSPRNet (it is not intended to duplicate the entire WSPRNet database in dxdisplay). We think that 50 per minute will provide a statistically significant sample of WSPRNet data which can then be correlated with other data. You can view most of the displays with dxdisplay data and/or WSPRNet sampling included. We may change the sampling frequency once we see how well the "50 per minute" criterion works.
In July, 2019, tracking of reported Winlink spots was added.