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955

Information - Help 
ID = 2863
       
Country:
United States of America (USA)
Brand:
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Triode, vacuum   VHF 
Identical to 955 = VT-121 = 6С1Ж = CV1059 = 110E/40 = 4671 = 6Ф3Ж = UN-955 = E1C
Similar Tubes
Normally replaceable-slightly different:
  38955 ; HA2 ; UN-555 ; VR59
Other class quality (otherwise equal):
  539-A ; 539-B ; 5731
Other base:
  9002
First year 1934 History of the British Radio Valve to 1940
Successor Tubes 9002  
Base Acorn 5 pin 5AA
Was used by Military and/or Government
Filament Vf 6.3 Volts / If 0.15 Ampere / Indirect / Specified voltage AND current AC/DC
Description

The first Acorn-tube, followed by the pentode 954 in 1935 and the variable-mu pentode 956 in 1936. See also the British "Acorn-valves" with 4-V-heaters and the Tosiba UN955. The tube was originally branded RCA-deForest

Designed to operate as amplifier or oscillator up to 600 MHz, thanks to the small dimensions of electrodes and the low inductance of its connections.

 
Dimensions (WHD)
incl. pins / tip		 x 37 x 23 mm / x 1.46 x 0.91 inch
Weight 6 g / 0.21 oz
Tube prices 3 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Tube Lore (II)   p. 145 & 150
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
955.gif
955: KdR
Karel De Reus †
955_so.png 955: ARRL Handbook 1972
Anonymous 10 Collector
More ...
Just Qvigstad 		955.png
955: RCA Technical Manual TT3
Miguel Angel Trujillo-Rodriguez
More ...
Usage in Models 4= 1936 ; 1= 1937 ; 3= 1938?? ; 3= 1938? ; 1= 1938 ; 1= 1939?? ; 7= 1939 ; 1= 1940?? ; 4= 1940 ; 1= 1941?? ; 1= 1941 ; 4= 1942? ; 4= 1942 ; 1= 1943 ; 5= 1944 ; 3= 1945 ; 1= 1947? ; 1= 1947 ; 2= 1948? ; 1= 1949? ; 1= 1949 ; 1= 1950?? ; 2= 1951 ; 1= 1952? ; 2= 1952 ; 1= 1959? ; 1= 1959 ; 1= 1960?? ; 1= 1961? ; 1= 1970??
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):61
Literature "Funkschau" Vol. 11 No. 26 | 1938-06-26

Collection of

Geri Meier (CH)
Karel De Reus † (NL)
Georges Werts (B)
Roy Johnson (GB)
Jorge Tavares (F)
Christian Schaufelberger (CH)
Fin Stewart (AUS)
Martin Steyer (D)
Aldo Patriarca (CH)
Valery Gromov (RUS)
Karl - Heinz Bossan (D)
Eddy Krijger (NL)
Bekir Yurdakul (F)
Tomasz Szczesniak (PL)
Thomas Lüthe (D)
Peter Pfeiffer (D)
Keith Ellison (AUS)
Emilio Ciardiello (I)
David Erali (USA)
Robert Gillespie (USA)
Museum Roggenhofer (A)
 
20200307_211150.jpg

955
 
Forum contributions about this tube
955
Threads: 1 | Posts: 1
Hits: 6890     Replies: 0
Midget Broadcast Set with 955 acorn tube
Georg Richter
28.Jan.10 		  1
Midget Broadcast Set with 955 acorn tube 

A nice instruction how to build a midget broadcast set with the 955 acorn tube was issued in the book "Radio For The Millions" (prepared in 1945 by Popular Science Monthly staff, but first published in "Popular Scienece Monthly" November 1938).

Enjoy the attachment.

Best Regards

GR

Attachments

 
955
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