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Big 4

Big 4; Martian (ID = 2362293) Crystal Big 4; Martian (ID = 369201) Crystal
Big 4; Martian (ID = 1596262) Crystal Big 4; Martian (ID = 1596263) Crystal
Big 4; Martian (ID = 1596266) Crystal Big 4; Martian (ID = 1596267) Crystal
Big 4; Martian (ID = 1596268) Crystal Big 4; Martian (ID = 1596269) Crystal
Big 4; Martian (ID = 46991) Crystal Big 4; Martian (ID = 73187) Crystal
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Big 4; Martian (ID = 2362293) Crystal
Martian: Big 4 [Crystal] ID = 2362293 1400x1735
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For model Big 4, Martian Manufacturing Co. Inc.; Newark (NJ):
Collection privée (réf.: 717, 728) Blairco 4 est le modèle gravé sur notre appareil, mais semble identique au Big 4
 
Country:  United States of America (USA)
Manufacturer / Brand:  Martian Manufacturing Co. Inc.; Newark (NJ)
Year: 1923 Category: Detector-Radio (Crystal or diode, without tubes/transistors)
Main principle Crystal or Solid State Detector
Wave bands Broadcast only (MW).
Details
Power type and voltage No Power needed
Loudspeaker - For headphones or amp.
Power out
from Radiomuseum.org Model: Big 4 - Martian Manufacturing Co. Inc.
Material Metal case
Dimensions (WHD) 140 x 220 x 140 mm / 5.5 x 8.7 x 5.5 inch
Notes

one or two tuning sliders (ball on coiled spring); Lit.: M.L.Sievers: "Crystal Clear" vol.1, p.72

Price in first year of sale 7.00 $
Collectors' prices  
External source of data Ernst Erb
Source of data Radio Collector`s Guide 1921-1932
Mentioned in Crystal Clear (Volume 1) (p.72)
Literature/Schematics (1) RADIOBOTE, Österr. (Heft 3/2006, S.4 ff, Gerätebeschreibung)


All listed radios etc. from Martian Manufacturing Co. Inc.; Newark (NJ)
Here you find 7 models, 4 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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