TFA is from the now defunct magazine Monitoring Times which was about ham radio, shortwave listening and radio in general. People interested in such topics may

TFA is from the now defunct magazine Monitoring Times which was about ham radio, shortwave listening and radio in general. People interested in such topics may enjoy a successor magazine, Spectrum Monitor [1], which covers similar topics and has had some of the same writers as Monitoring Times (Note: I have no affiliation with either magazine). [1] https://www.thespectrummonitor.com/ https://www.thespectrummonitor.com/ edit: Corrected name of Spectrum Monitor which I botched the first time.