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ID = 19910
United States of America (USA)
Brand: RCA (RCA Victor Co. Inc.); New York (NY)
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Oscilloscope CRT, picture tube   Indication 
Identical to 3WP2
Similar Tubes
Normally replaceable-slightly different:
  3WP1 ; 3WP11
First Source (s)
26.Nov.1956 : Electron Tube Registration List

Base Duodecal (12-pin), B12A (not glass)
Was used by Technology / Measurement
Filament Vf 6.3 Volts / If 0.6 Ampere / Indirect

P2 medium perrsistence screen.

Information source - - Manufacturers Literature   

3WP2: RCA Electron Tube Handbook (data sheet 4-57)
Anonymous 88 Collector

3wp1_so.png 3WP2: RCA Electron Tube Handbook (data sheet 4-57)
Anonymous 88 Collector

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Just Qvigstad
3WP2: RCA El.Tube Handb.(data sheet 4-57)
Anonymous 88 Collector

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Usage in Models 1= 1953? ; 1= 1955 ; 1= 1959

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):3

Collection of



Forum contributions about this tube
Threads: 1 | Posts: 1
Hits: 2475     Replies: 0
3WP2 (3WP2)
Franz Harder
  1 This CRT has identical technical data and dimensions compared with 3WP1.
It is only the Phosphor that makes the difference between various models:

3WP1 = green fluorescence / green phosphorescence / medium persistence
3WP2 = greenish-yellow fluorescence / greenish-yellow phosphorescence / long persistence
3WP11 = blue fluorescence / blue phosphorescence / short persistence         
End of forum contributions about this tube

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