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ER2A7

Country:  United States of America (USA)      Brand:  Raytheon Mfg. Co.; Cambridge, USA (also tubes) 
  Tube type:  Pentagrid-Converter (Heptode)   Controlling (mu) 
Tube ID = 33893
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Identical to ER2A7 = 2A7

Base 7-Pin-Base U7A = small, old, USA Top contact with a cap
Filament Vf 2.5 Volts / If: 0.8 Ampere / -: Indirect / -: Parallel, (AC/DC) /

er2a7_so.png
ER2A7: ARRL Handbook 1972
Michael Schlör

 
Usage in Models   1= 1934
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):   1

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