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Western Electric 224-B (1927). Used in many early TV
experiments
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Experimental 5 inch CRT (ca 1930) Used in early TV
tests
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12AP4 (12 inch) used in U.S. mirror in lid sets. Click for pictures
of the manufacturing process
or a magazine ad featuring the tube.
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Cossor 3244 (5 inch) used in Cossor 54 |
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14AP4, used in early DuMont 14 inch sets.
Click here for how they were
made
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Mazda CRM-71 (7 inch). Used in Ekco TA-201 and TS-201 |
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Safar VS 4/35 (1938) |

Telefunken RFB/T2. 19.5 x 22.5 cm. First rectangular CRT (1939).
Click for article.
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Emiscope 3/1 (5 inch), used in early HMV and Marconi sets
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HMV 1800 tube (12 inch). Notice the unusual neck. |
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Mazda CRM-121 (12 inch) first made in 1938, but used in British
sets until the early 50s.
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Emiscope 3/4 (9 inch) |
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Cossor 3272 (13.5 inch) used in Cossor 137T.
Click for ad. |

Emiscope 6/6 (12 inch) used in early HMV and Marconi mirror in lid
sets
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Lorenz 50 cm (20 inch) CRT
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Lorenz projection CRTs |
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1936 German CRT. Click for
more information
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Baird 15MW3 Cathovisor (15 inch) used in Baird T-5
and T-23. Click for ad.
(Courtesy of Dave Abramson)
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