- Country
 - France
 
- Manufacturer / Brand
 - Radialva, Véchambre Frères; Asnières, Courbevoie, Saint-Denis
 
- Year
 - 1938/1939
 
- Category
 - Broadcast Receiver - or past WW2 Tuner
 
- Radiomuseum.org ID
 - 62644
 
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
 - 4
 
- Main principle
 - TRF (Tuned-Radio-Frequency but use of regeneration unknown); Anode bend detection
 
- Tuned circuits
 - 2 AM circuit(s)
 
- Wave bands
 - Broadcast (MW) and Long Wave.
 
- Power type and voltage
 - AC/DC-set / AC 25-60 Hz & DC: 110-125 Volt
 
- Loudspeaker
 - Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 12 cm = 4.7 inch
 
- Power out
 - 2 W (unknown quality)
 
- Material
 - Bakelite case
 
- from Radiomuseum.org
 - Model: Groom 39 - Radialva, Véchambre Frères;
 
- Shape
 - Tablemodel without push buttons, Mantel/Midget/Compact up to 14
 
- Dimensions (WHD)
 - 230 x 170 x 130 mm / 9.1 x 6.7 x 5.1 inch
 
- Notes
 - 
        
2 gammes d'ondes : PO de 195 à 565 m, GO de 800 à 2000 m. Fonctionne sur 130 à 150 volts à l'aide d'un réducteur de tension de 40 ou 90 ohms, et sur 220 à 250 volts (290 u 360 ohms). Lampe cadran : 4,5 V / 0,3 A.
Coffret bakélite, 4 teintes au choix. Valise de voyage à 48 Fr.
 
- Net weight (2.2 lb = 1 kg)
 - 3 kg / 6 lb 9.7 oz (6.608 lb)
 
- Price in first year of sale
 - 595.00 FRF
 
- External source of data
 - Serge Laffont/Martin Renoth
 
- Circuit diagram reference
 - La Documentation du Revendeur - Radio
 
- Mentioned in
 - -- Original prospect or advert
 
- Literature/Schematics (1)
 - Schémathèque Toute la Radio (STR) (No. 346)
 
- Literature/Schematics (2)
 - Catalogue Au Pigeon Voyageur, 1939
 
- Other Models
 - 
        
Here you find 191 models, 156 with images and 61 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Radialva, Véchambre Frères; Asnières, Courbevoie, Saint-Denis 
Collections
The model Groom is part of the collections of the following members.
Museums
The model Groom can be seen in the following museums.