• Country
• United States of America (USA)

• Manufacturer / Brand
• B&K (Precision), Dynascan Corp., Cobra Electronics; Chicago, IL and Yorba Linda, CA

• Year
• 1956

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 99396

• • alternative name: B&K Manufacturing Company

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 2

• Valves / Tubes
• 6AT6 6AX5

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 105-125 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: Dyna-Quik Tube Tester 500 - B&K Precision, Dynascan Corp.,

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 14.5 x 15.2 x 5.75 inch / 368 x 386 x 146 mm

• Notes
• Dynamic mutual conductance tube tester. Checks RF, IF, AGC, and critical sync tubes directly on meter.
  
  The 500 tube tester has been made in 4 variants:
  Model "F": equipped with the type 6AT6 tube and type 6AX5 tube and 2 oxide copper diodes, the balance was obtained through the fixed 150 Ohms resistors R1 and R2.
  Model "G": as the model "F" with the increase of two sockets for testing the 6S4 and 6SA7 tubes, uses the same tables paper of the model "F" tube tester.
  Model "J": uses new wiring to test the 6BN6. Tubes tester on 7B must be tested on 7A; modified the R1 and R2 resistor from 150 to 130 Ohms and introduced 40 Ohms potentiometer R19 from the balancing of the meter, improved built some sockets for new tests, new tables built with paper and spiral bound.
  Model "K": replaced 6AX5 with the 83 tube, same tube tester tables of model "J", the bias voltages are slightly different.
  NOTE:there is a further scheme where to improve the meter balance, the B+ to be sent to the terminal 10 (PLATE) is not picked up from one end of the filament of 83, but from the central tap of the winding of the filament 83.
  
  Del modello 500 tube tester sono stati realizzati 4 modelli:
  Modello "F": equipaggiato con le valvole 6AT6, 6AX5 e 2 diodi ad ossido di rame, il bilanciamento era ottenuto tramite le resistenze fisse R1 e R2 da 150 Ohm.
  Modello "G": è come il modello "F" con l'incremento di due zoccoli per il test della valvola 6S4 e della 6SA7, stesse tabelle su cartoncino del modello "F".
  Modello "J": nuovo cablaggio per testare la valvola 6BN6 i tubi testati sullo zoccolo 7B debbono essere testati su 7A, variate le resistenze R1 e R2 da 150 a 130 Ohm e inserito il potenziometro R19 da 40 Ohm per il bilanciamento del misuratore, incrementati alcuni zoccoli per nuovi test, realizzate nuove tabelle con fogli rilegati con spirale.
  Modello "K": sostituita la valvola 6AX5 con la 83, stesse tabelle del modello J, le tensioni di Bias sono leggermente diverse.
  NOTA: esiste un ulteriore schema dove per migliorare il bilanciamento del misuratore, la B+ da inviare al terminale 10 (PLATE), non viene prelevata da un estremo del filamento della 83, ma dalla presa centrale dell'avvolgimento del filamento della 83.

• Price in first year of sale
• 108.00 $

• Literature/Schematics (1)
• -- Original-techn. papers. (Allied Radio Catalog Nº 150, 1956)

• Author
• Model page created by Vitor Oliveira. See "Data change" for further contributors.

• Other Models

• Here you find 110 models, 106 with images and 44 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from B&K (Precision), Dynascan Corp., Cobra Electronics; Chicago, IL and Yorba Linda, CA