RAJAR Q1 2023: Radio is booming according to the latest figures https://radiotoday.co.uk/2023/05/rajar-q1-2023-radio-is-booming-according-to-the-latest-audience-figures/
5 Ways to Turn AM Radio Around https://www.radioworld.com/columns-and-views/guest-commentaries/5-ways-to-boost-am-radio-growth
Shortwave DB: A new database of HF radio schedules https://swling.com/blog/2023/05/shortwave-db-a-new-database-of-hf-radio-schedules/