This tube is listed on page 32 of L'ABCDes Lampes de TSF as type number B2049T. Apart from this, no other source information shows the B2049T. Characteristics appear to be the same.
Dimensiones (Alt,Ancho,Prof.) incl.pins/tip
50 x 139 x 34 mm / 1.97 x 5.47 x 1.34 inch
Literatura
L'ABCDaire des lampes de TSF des jeunes années p. 32
Babani, International Radio Tube Encyclopaedia p. 54 & 55
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
B2049: ficha de valvulas
Getulio Jimenez-Gomez
B2049: Telefunken Werkstattbuch
Wolfgang Bauer
Just Qvigstad
B2049: RVF-Röhrenbuch-M1,1947
Anónimo 15 Coleccionista
Mas ...
