• Country
• Australia

• Manufacturer / Brand
• Standard Telephones and Cables Pty, Ltd (STC), Sydney

• Year
• 1939

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 168573

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

• Number of Tubes
• 5

• Valves / Tubes
• 6K8G 6U7G 6Q7G 6AG6G 5Z4G

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz; 2 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 200; 240 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 12 inch = 30.5 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: 509T - Standard Telephones and Cables

• Shape
• Console, Lowboy (legs < 50 %).

• Notes

• Model 509T:

  Brief Specifications
  This model is built on a full-size chassis with 10" fully edge-lit dial, glass bezel, and black Bakelite escutcheon with inlaid medallion.
  Features:
  Straight-line frequency tuning, automatic volume control, tone control, clearly marked multizone dial, with station calls individually coloured in State groups and visual indicators for tone and volume controls.
  Dial movement is diecast with inbuilt pointer drive and has optimum drive ratio with flywheel loading.
  Twelve-inch electro-dynamic moving coil loudspeaker.
  Threshold sensitivity control.
  Circuit specifications:
  455 kc air trimmed superheterodyne, using a frequency converter, one stage permeability tuned IF amplification, diode-triode detector amplifier, resistance-coupled to high gain steep slope output pentode.
  Tuning range: 1600 -550 kilocycles (includes an extension of broadcast band authorised by the last Cairo Convention).
  AC supply: 200, 240 volts, 50 cycles.

  The Australasian Radio World. November 1, 1939. Page 29

• Circuit diagram reference
• Australian Official Radio Service Manual Vol. IV

• Literature/Schematics (1)
• Radio & Electrical Retailer, Australia (2/11/39 Also in Mingay's Radio Diagram & I.F. Index)

• Author
• Model page created by Stuart Irwin. See "Data change" for further contributors.

• Other Models

• Here you find 614 models, 259 with images and 301 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Standard Telephones and Cables Pty, Ltd (STC), Sydney