Ancient Web: The Test Card Gallery Remembers When Television

Darren Meldrum's Test Card Gallery preserves BBC, ITV, and international television test cards, tuning signals, clocks, captions, and engineering patterns from the era before round-the-clock broadcasting.

https://switchboardtechservices.com/articles/ancient-web-the-test-card-gallery-remembers-when-television-had-to-show-its-work/

By Switchboard Tech Services · Originally published 2026-08-28

#Switchboard #Article