https://video.joostrekveld.net/videos/watch/501053ac-c7d9-421a-b800-aead0e110401 A short test with oscillographic patterns on a brand new Dumont 5AQP7 radar display tube from 1964. This tube has P7 phosphor, which is a two stage phosphor: the blue phosphor is fast (milliseconds) and triggers the yellow phosphor which is very slow (seconds). Part of preparations for an installation called #71 in which this type of radar tube is used, figuring out how to drive and modulate it. Thu, 03 Sep 2026 03:15:35 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://video.joostrekveld.net https://video.joostrekveld.net/lazy-static/avatars/e35ea6d1-b888-421d-b49f-14ee9051e5ed.jpg https://video.joostrekveld.net/videos/watch/501053ac-c7d9-421a-b800-aead0e110401 All rights reserved, unless otherwise specified in the terms specified at https://video.joostrekveld.net/about and potential licenses granted by each content's rightholder.