• Country
• Japan

• Manufacturer / Brand
• Crown Radio Corp.; Tokyo

• Year
• 1967 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 357911

• • alternative name: Asahi Radio Mfg. Co., Ltd

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

• Number of Transistors
• 12

• Semiconductors
• 2SC460 2SA351 2SA351 2SA12 2SA12 2SA234 2SB75 2SB75 2SB77 2SB77 2SB77 2SB77

• Main principle
• Superheterodyne (common); ZF/IF 455/1820 kHz; 3 AF stage(s)

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast plus more than 2 Short Wave bands.

• Power type and voltage
• Line / Batteries (any type) / 117; 220 / C: 4 x 1.5 Volt

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

• Power out
• 0.6 W (0.95 W max.)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: 3-Band Constellation TR-2250 - Crown Radio Corp.; Tokyo

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

• Dimensions (WHD)
• 11.4375 x 7.875 x 3.5625 inch / 291 x 200 x 90 mm

• Notes

• Frequency range:
  MW 530~1605 kHz
  SW1 1.6~4 MHz
  SW2 4~12 MHz
  SW3 12~26 MHz (I.F. 1.82 MHz)

  See also battery only version model TR-2210

• Net weight (2.2 lb = 1 kg)
• 4.4 lb (4 lb 6.4 oz) / 1.998 kg

• Literature/Schematics (1)
• J.R. Publications Transistor Radio Service Handbook (Group C6, 1969, Page C20.)

• Author
• Model page created by Martin Kent. See "Data change" for further contributors.

• Other Models

• Here you find 369 models, 337 with images and 98 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Crown Radio Corp.; Tokyo