• Country
• India

• Manufacturer / Brand
• Chopra; (where?)

• Year
• 1960 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 364099

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

• Number of Transistors
• 7

• Semiconductors
• unknown_tr_PNP

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

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / C: 4 x 1.5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 6 cm = 2.4 inch

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Embassy Transistor 6 - Chopra; where?

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 210 x 108 x 35 mm / 8.3 x 4.3 x 1.4 inch

• Notes

• Manufcturer's name probably "CHOPRA". Case similar to Hitachi TH-668, but updated  circuit design and complete new print layout. No external antenna- and earphone jack.

  Transistors stamped  8EM: T6M1, T6M2, T6M3, T6M4, T6M5 &T6M6 (a transformer coupled push pull output pair of identical transistors), T6M7 (used as rectifier diode).

• Net weight (2.2 lb = 1 kg)
• 0.425 kg / 0 lb 15 oz (0.936 lb)

• Author
• Model page created by Wolfgang Gebert. See "Data change" for further contributors.

• Other Models

• Here you find 1 models, 1 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Chopra; (where?)