• Country
• Germany

• Manufacturer / Brand
• Grundig (Radio-Vertrieb, RVF, Radiowerke); Fürth/Bayern

• Year
• 1972–1974

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 28914

• • alternative name: Grundig Portugal || Grundig USA / Lextronix

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

• Number of Transistors
• 10

• Semiconductors
• BF314 BF241 BF241 BF241 BF240 BC308 BC238 AC121 AC187 AC188 AA112 AA112 AA112 BZ102

• Main principle
• Superheterodyne (common); ZF/IF 460/10700 kHz

• Tuned circuits
• 5 AM circuit(s)     7 FM circuit(s)

• Wave bands
• Broadcast, Short Wave plus FM or UHF.

• Power type and voltage
• Line / Batteries (any type) / 110-240 / 4×1,5 Volt

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

• Power out
• 0.6 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Top-Boy 500K - Grundig Radio-Vertrieb, RVF,

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

• Dimensions (WHD)
• 260 x 180 x 50 mm / 10.2 x 7.1 x 2 inch

• Notes
• UKW: 87,5 - 108 MHz
  KW: 5850 - 16200 kHz
  MW: 510 - 1620 kHz
  

• Net weight (2.2 lb = 1 kg)
• 1.3 kg / 2 lb 13.8 oz (2.863 lb)

• External source of data
• Erb

• Source of data
• Handbuch VDRG 1972/1973

• Literature/Schematics (1)
• -- Original-techn. papers.

• Other Models

• Here you find 6208 models, 5433 with images and 4203 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Grundig (Radio-Vertrieb, RVF, Radiowerke); Fürth/Bayern