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7D9

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ID = 10702
       
Country:
Great Britain (UK)
Brand: Common type Great Britain tube/semicond.
Tube type:  Vacuum Pentode   Power/Output 
Identical to 7D9 = EL91

Base Miniatur-7-Pin-Base B7G, USA 1940
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.2 Ampere / Indirect / Specified voltage AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   
Röhren-Taschen-Tabelle, (Franzis RTT)   

7d9_korr.png
7D9: corrected version
Roland Langfeld

mi17_g_4.gif 7D9: RTT Schwandt
Günther Stabe † 19.8.20

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Just Qvigstad
7d9_7d10_brimar_radio_valves_and_teletube_manual_1951_no_4_p1_data_pin.png
7D9: Brimar Valve and Teletube Manual 1951 No.4
Adrian Riesen

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Usage in Models 1= 1951 ; 1= 1956

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2
 

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