For over 20 years, I have listened to Shortwave Radio. I currently use a Sangean ATS-818 receiver to listen to international broadcasts. My first shortwave radio is a Voxson VP-2 that I purchased during the 1980s from a retail store at Southand shopping centre.
Electromagnetic Spectrum Reception
I have a number of tools that I use to listen to the EM spectrum.
For further details see the following links: