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Micro-Bigril_R43

Información - Ayuda 
ID = 21480
       
País:
Francia
Marca: La Radiotechnique (RT); Paris, Suresnes
Diseñador: Dario (tubes) - voir aussi La Radiotechnique 
Tipo:  Dual-Grid Tetrode   Frequency converter 
Idéntica a Micro-Bigril_R43 = Micro-Bigril = R43
Válvulas similares
Substituya normalmente -diferencia peq.:
  R43M
Primera serie 1925 Saga of the Vacuum Tube, Tyne page 402

Base French Bigrille 5 pin (D)
Filamento Vf 4 Volt / If 0.08 Ampere / Direct / Battery =
Descripción

Tyne: "Double-grid tubes came on the French market in 1924. At first they had tungsten filaments. By 1925 they were superseded by the dull-emitter version, space-charge rather than shield-grid tubes, and were first used in receivers at low anode voltage. Later they were used as frequency changers in superheterodynes. Examples of these are Métal's DG and RM, La Readiotechniaue's Micro-Bigril R43, and Grammont's Bigrille-Ampli and Bigrille BF." [EE]

 

tubeenvdiag_klein_mod_bigr_6~~2.gif
Micro-Bigril_R43: W.H.
Wolfgang Holtmann

tubesockel_klein_bigrillem_3_2~~2.gif Micro-Bigril_R43: W.H.
Wolfgang Holtmann

r43_spec_1.png
Micro-Bigril_R43: Banneitz, TB der drahtl. Teleph. 1927
Anónimo 15 Coleccionista

Colección personal de

 
micro_bigrill.jpg

 

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