Editing List of BBC test cards (section)

==Test Card G==
Test Card G was a television test card broadcast occasionally by the BBC. It was a variant of the famous [[Philips PM5544]] test card and was introduced around 1971 as their first electronically generated colour test card.<ref name="meldrum"/> Test Card G was generally used by local transmitters for opt outs or during times when a particular region was not showing a programme broadcast from London. It was also used in place of Test Card F nationally from time to time when the projector showing F's photographic slide was not available or undergoing maintenance. This ended some time after Test Card F was converted to electronic form in 1984.<ref>{{cite web |url = http://www.oodletuz.fsnet.co.uk/maxtco/memory1.htm |title = Test Card Memory Lane |archive-url=https://web.archive.org/web/20160314085649/http://www.oodletuz.fsnet.co.uk/maxtco/memory1.htm |archive-date=14 March 2016 |url-status=dead}}</ref> Test Card G was also occasionally used by [[ITV (TV network)|ITV]] and its regulator the [[Independent Broadcasting Authority|IBA]] alongside Test Card F and EBU colour bars before switching over to the [[ETP-1]] test card in 1979, though [[London Weekend Television]] (LWT)<ref>{{Cite web|url=https://www.youtube.com/watch?v=g4W9X9kizDw|title=LWT Closedown - 1984|date=27 December 2010 |via=www.youtube.com}}</ref> and [[ITV Channel Television]]{{citation needed|date=April 2022}}, two constituent franchisee companies in the ITV network structure, continued to broadcast Test Card G after closedown well into the 1980s.

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File:PM5544 (Testcard G variation).png|Recreation of BBC Test Card G (PM5544 variation).
File:BBC Test Card G.png|Components of BBC Test Card G.
File:PM5544 BEM.jpg|Preserved [[BBC Birmingham]] Test Card G generator (originally installed at [[Pebble Mill Studios]]) at the [[Broadcast Engineering Conservation Group|Broadcast Engineering Museum]], Lincolnshire.
</gallery>