Antique radios, Old Time Radios
X77
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| Tube type: |
Pentagrid-Converter (Heptode) Pentagrid (new) Controlling (mu) |
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| Identical to |
X77
= CV453
= 6BE6
= 6А2П
= EK90
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| Similar
Tubes |
Normally replaceable-slightly different:
5760
Other class quality (otherwise equal):
5750
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| First year |
1950
Tube leaflet collection E.Erb Analysis by original leaflets
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| Base |
Miniatur-7-Pin-Base B7G, USA 1940
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| Filament |
Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC |
| Information source |
Röhren-Taschen-Tabelle, (Franzis RTT)
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| Tube Tester Data |
Avo CT160 |
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X77: RTT Schwandt
Günther Stabe † 19.8.20
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