• Country
• Japan

• Manufacturer / Brand
• Orion Electric Co., Ltd.; Echizen-shi (Fukui)

• Year
• 1964 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 231587

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

• Number of Transistors
• 7

• Semiconductors
• 2SA52 2SA49 2SA49 1N60 2SB335 2SB335 2SB336 2SB336

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 2 x 1.3 Volt

• Loudspeaker
• Permanent or electro-dynamic (moving coil), system not known yet. / Ø 4.5 cm = 1.8 inch

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Mini 7TR - Orion Electric Co., Ltd.;

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 2 x 1.9 x 1 inch / 51 x 48 x 25 mm

• Notes

• This Orion 7TR radio model, among others models from different brands like the Standard Micronic SR-G430, uses a transformer-less push-pull output stage directly driving a special high impedance center tap speaker. In this model the speaker has 60 ohm impedance CT.

  Made in Japan JT-602

• Author
• Model page created by Mark Skala. See "Data change" for further contributors.

• Other Models

• Here you find 151 models, 143 with images and 17 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Orion Electric Co., Ltd.; Echizen-shi (Fukui)