Telephone repeater tube. Refer to photograph of tube. It is shown with a UX 4 pin base. Manufacturers literature shows the base for this tube is "Med. 4 pin" but does not show what style (UX or UV). All 4 Standard tubes (4019A, 4020A, 4021A and 4022AR) made by other factories (England and Australia) had the UV base.
Abmessungen (BHT) inkl. Stifte/Spitzli
x 116 x 57 mm / x 4.57 x 2.24 inch
Gewicht
65 g / 2.29 oz
Literatur
Taschenbuch zum Röhren-Codex 1948/49
Babani, International Radio Tube Encyclopaedia
- - Manufacturers Literature
