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ID = 32145
United States of America (USA)
Brand: RCA (RCA Victor Co. Inc.); New York (NY)
Tube type:  Double Diode-Triode   Text 
Identical to 1659 = 101A_Boonton
Similar Tubes
Other class quality (otherwise equal):
  2A6 ; 535-A ; 535-B

Base 6-Pin-Base U6A, old, USA Top contact with a cap.
Was used by Technology / Measurement
Filament Vf 2.5 Volts / If 0.8 Ampere / Indirect

Selected 2A6 for use in Boonton Q-meters.

The 1659 was further selected for use in the Boonton 260-A meter and was designated 535-A or 535-B.

Information source Tube Lore (I)   

1659_so.png 1659: rtt
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