• Country
• Australia

• Manufacturer / Brand
• Operatic (brand), Bland Radio Pty. Ltd.: Adelaide SA

• Year
• 1950

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 191000

• • Brand: Operatic

• Number of Tubes
• 5

• Valves / Tubes
• 6N8 6AN7 6N8 6BD7 6AQ5

• Main principle
• Superhet with RF-stage; ZF/IF 455 kHz; 2 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast and Short Wave (SW).

• Power type and voltage
• Direct Current supply (DC) / 12 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• from Radiomuseum.org
• Model: Operatic Martha A11 - Operatic brand, Bland Radio

• Notes
• This model is for 12V farm lighting systems and uses a synchronous vibrator power unit.

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

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

• Other Models

• Here you find 119 models, 67 with images and 9 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Operatic (brand), Bland Radio Pty. Ltd.: Adelaide SA