ALMA Primer Videos: Sidebands, Basebands and Spectral Windows; Part 1: Principles & Components
Why the open web links it
Explains key concepts in radio astronomy signal processing: sidebands, basebands, and spectral windows.
Linked by 2 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including uvic.ca, nrao.edu.