TN3270 viewer for HF propagation data API

Simple tool for downloading HF propagation data from hamqsl.com in XML format, and displaying the data in a TN3270 terminal emulator. It caches the current data, expiration time is 1 hour added to the time of generation as indicated in the XML file.

The viewer is written in Go and uses go3270 library.

To run the viewer, use go run . command. Then, you need to connect to it using a TN3270 client, e.g. x3270 or c3270. To customize the port, use --port 3271 command line option.