 |
| Identical to |
DK91
= 1R5
= VT-171
= 1a1p
= X17
= 1C1_Heptode
= 1A2_1R5
|
| Similar
Tubes |
1H33 (Heater different)
8022 (other characteristic (electr. data))
|
| First Series |
Dec.1948 Tube leaflet collection E.Erb Analysis by original leaflets [RM4805, Ph.Arch.9.4 |
| First Source
(s) |
Mar.1948 : Funkschau (FS) # 3
|
|
| Base |
Miniatur-7-Pin-Base B7G, USA 1940
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Direct /
-: Battery = /
If: 0.05 Ampere /
Vf 1.4 Volts /
|
| Description |
Heptode; Mischröhre, Valvo ab 1950
Text in other
languages (may
differ)
|
| Dimensions (WHD) |
19 x 54 x mm / 0.75 x 2.13 x inch |
| Weight |
10 g / 0.35 oz |
| Tube prices |
0 Tube prices (visible for members
only)
|
| Literature |
- - Manufacturers Literature
Taschenbuch zum Röhren-Codex 1948/49
|
|
|
| |
|
| |
Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus
|
|
|
|
Röhrensammlung
Wolfgang Bauer
|
| Variants |
|
Mullard Valve+Service Manual 1951
Trev Levick
|
|
Ratheiser RTH,3.Aufl.,1964
Egon Penker
|
|
|
