 |
| Identical to |
UBL1
|
| Similar
Tubes |
UBL21 (other base and data slightly different)
UBL3 (other base)
|
| First Series |
1940 Tube leaflet collection E.Erb Analysis by original leaflets (P41-1) |
| First Source
(s) |
Jan.1940 : Daten und Schaltungen moderner ... Röhren; Philips # 3
|
| Predecessor Tubes |
CBL1
CBL6
|
| Successor Tubes |
1941
UL41
UBL21
|
|
| Base |
Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Vb)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Indirect /
-: Series, AC/DC /
If: 0.1 Ampere /
Vf 55 Volts /
|
| Tube prices |
1 Tube prices (visible for members
only)
|
| Literature |
Taschenbuch zum Röhren-Codex 1948/49
|
|
|
| |
|
| |
Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus
|
|
 |
|
JR
Jacob Roschy
|
|
Lorenz Empfänger-Röhren , 9. Auflage
Michael Sigmund
|
|
Röhrenhandbuch, Ratheiser, 1.Aufl. 1947
Egon Penker
|
|
 |