• Country
• Bulgaria

• Manufacturer / Brand
• Elprom KB (Kliment Voroshilov Works, Slabotokov zavod); Sofia

• Year
• 1967–1969

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 100670

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

• Number of Transistors
• 6

• Semiconductors
• SFT317 SFT319 SFT319 SFT353 SFT323 SFT323

• Main principle
• Superheterodyne (common)

• Tuned circuits
• 6 AM circuit(s)

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

• Power type and voltage
• Dry Batteries / 3 × 1,5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 7 cm = 2.8 inch

• Power out
• 0.1 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Eho - Ехо 2 - Elprom KB Kliment Voroshilov

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

• Dimensions (WHD)
• 135 x 85 x 35 mm / 5.3 x 3.3 x 1.4 inch

• Notes

• Coverage MW and SW 25-49 m.

• Net weight (2.2 lb = 1 kg)
• 0.330 kg / 0 lb 11.6 oz (0.727 lb)

• Mentioned in
• Radio es Televizio Vevö keszülekek 1967-69

• Author
• Model page created by Zenonas Langaitis. See "Data change" for further contributors.

• Other Models

• Here you find 66 models, 61 with images and 50 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Elprom KB (Kliment Voroshilov Works, Slabotokov zavod); Sofia