• Country
• Germany

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

• Year
• 1956/1957

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 117064

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

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

• Number of Tubes
• 9

• Valves / Tubes
• DF97 DF97 DK96 DF97 DF97 DF97 DAF96 DL96 EL95

• Main principle
• Superheterodyne (common); ZF/IF 460/10700 kHz; 2 AF stage(s); Export model

• Tuned circuits
• 8 AM circuit(s)     12 FM circuit(s)

• Wave bands
• Broadcast, 2 Short Wave plus FM or UHF.

• Power type and voltage
• Line / Batteries (any type) / 60 Hz, 110-120 / DEAC D3,5 or 1,5 & 90 Volt

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

• Power out
• 0.15 W (unknown quality)

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: FM-Concert-Boy 57 USA - Grundig Radio-Vertrieb, RVF,

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

• Dimensions (WHD)
• 430 x 250 x 180 mm / 16.9 x 9.8 x 7.1 inch

• Notes

• USA-Version des UKW-Concert-Boy 57. UKW 88-108 MHz, keine Langwelle dafür 2× Kurzwelle (Marineband MB 1,5-4 MHz, Kurzwelle SW 6-16 MHz). Frequenzskala ohne Stationsnamen.
  The "FM-Concert-Boy 57 USA" is the US version of the domestic "UKW-Concert-Boy 57": FM 88-108 Mc, SW 6-16 Mc, MB 1.5-4 Mc, BC 510-1600 kc, no long wave. Dial shows frequencies (no station names). See also this interesting article about a NiMH battery for this set.

• Net weight (2.2 lb = 1 kg)
• 7.8 kg / 17 lb 2.9 oz (17.181 lb)

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Date 6-58, Set 404, Folder 6)

• Author
• Model page created by Bernhard Nagel. See "Data change" for further contributors.

• Other Models

• Here you find 6212 models, 5442 with images and 4209 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