• Country
• Hong Kong

• Manufacturer / Brand
• Emperor; Hong Kong

• Year
• 1972–1974

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 180519

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

• Number of Transistors
• 6

• Semiconductors
• 2SC1390 2SC1390 2SC1390 2SC1390 2SB176 2SB176 1N4148

• Main principle
• Superheterodyne (common); ZF/IF 465 kHz; 3 AF stage(s)

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Long Wave and/or Very Low Frequency (VLF).

• Power type and voltage
• Dry Batteries / AA: 1 x 1.5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4 cm = 1.6 inch

• Power out
• 0.08 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: 641-LW - Emperor; Hong Kong

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

• Dimensions (WHD)
• 75 x 70 x 25 mm / 3 x 2.8 x 1 inch

• Notes

• Une seule gamme GO LW (150 à 350 kHz) Existe avec gamme PO MW.

  Similar models listed here

• Net weight (2.2 lb = 1 kg)
• 0.150 kg / 0 lb 5.3 oz (0.33 lb)

• Literature/Schematics (1)
• -- Schematic

• Author
• Model page created by Olivier Palix. See "Data change" for further contributors.

• Other Models

• Here you find 9 models, 8 with images and 4 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Emperor; Hong Kong