• Country
• Germany

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

• Year
• 1953–1955

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 2026

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

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

• Number of Tubes
• 5

• Valves / Tubes
• EC92 ECH81 EF93 EABC80 EL41

• Number of Transistors

• Semiconductors
• B250C75

• Main principle
• Superheterodyne (common); ZF/IF 468/10700 kHz

• Tuned circuits
• 6 AM circuit(s)     8 FM circuit(s)

• Wave bands
• Broadcast, Long Wave and FM or UHF.

• Power type and voltage
• Alternating Current supply (AC) / 110/220 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 12 cm = 4.7 inch

• Power out
• 4 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Heim-Boy 1 [Elfenbein] - Grundig Radio-Vertrieb, RVF,

• Shape
• Tablemodel with Push Buttons.

• Dimensions (WHD)
• 318 x 184 x 163 mm / 12.5 x 7.2 x 6.4 inch

• Notes
• getrennte Skalen für AM und FM mit Beleuchtungsumschaltung.

• Net weight (2.2 lb = 1 kg)
• 4.4 kg / 9 lb 11.1 oz (9.692 lb)

• Price in first year of sale
• 193.00 DM

• Source of data
• Rundfunk- und Fernseh-Katalog 1954/55 / Radiokatalog Band 1, Ernst Erb

• Circuit diagram reference
• Lange Schaltungen der Funkindustrie, Buch 4

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

• Picture reference
• Das Modell ist im «Radiokatalog» (Erb) abgebildet.

• Other Models

• Here you find 6196 models, 5420 with images and 4191 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Grundig (Radio-Vertrieb, RVF, Radiowerke)