Western Electric 224-B* (1927). Used in many early TV experiments

Experimental 5 inch CRT* (ca 1930) Used in early TV tests

RCA experimental CRT* (L-1313, C-739). Used in 1933 field trial sets. Uses electrostatic deflection for horizontal and magnetic deflection for vertical

(donated by Chuck Azzalina)

RCA experimental CRT* (#695) (1934)

(Donated by Chuck Azzalina)

Compagnie des Compteurs 3"* (1936)

Cossor 3272* (13.5 inch) used in Cossor 137T (1936)

Baird 15MW3 Cathovisor* (15 inch) used in Baird T-5 and T-23 (1936) Advertisement 

(Courtesy of Dave Abramson)  

Emiscope 6/6* (12 inch) used in early HMV and Marconi mirror in lid sets (1937)

RCA Developmental CRT (L-2299, C-745D)* for RR-366 prototype set (1936)

(donated by Chuck Azzalina)

Emiscope 3/1* (5 inch), used in early HMV and Marconi sets (1937)

3AP4* (906-P4) (3 inch) sold by RCA for home experimenters (1937)

RCA 1800* 9". Sold for use in home made sets (1939)

(donated by Chuck Azzalina)

Emiscope 3/3 (9 inch) (1937)

Cossor 3244 (5 inch) used in Cossor 54 (1938)

Shortwave & Television, May 1938

Shortwave & Television, May 1938

Mazda CRM-71 (7 inch). Used in Ekco TA-201 and TS-201 (1938)

Mazda CRM-121* (12 inch) first made in 1938, but used in British sets until the early 50s.

1938 German CRT* used in the Fernseh A. G. FE-VI

Safar VS 4/35 (1938)

EMI R5161 (1938) Used in Marconi 708 (1938)

14AP4* used in early DuMont 14 inch sets (1938)

Telefunken RFB/T2. 19.5 x 22.5 cm. First rectangular CRT (1939).

HMV 1800 tube (12 inch). Notice the unusual neck.(1939)

12AP4* (12 inch) used in U.S. mirror in lid sets

Lorenz projection CRTs (1939)

Philco ion trap CRT (1939)

Lorenz 50 cm diam. CRT (1939)

French 1939 projections tubes, for 20 and 40 kv

DuMont 20AP4 20AP4 (1940)

Rectangular, flat faced CRT used in 1941 CBS color experiments