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L-740 De Luxe Beam-a-Scope

L-740 De Luxe Beam-a-Scope ; General Electric Co. (ID = 1132771) Radio
 
L-740 De Luxe Beam-a-Scope ; General Electric Co. (ID = 1132772) Radio
 
L-740 De Luxe Beam-a-Scope ; General Electric Co. (ID = 1132773) Radio
 
L-740 De Luxe Beam-a-Scope ; General Electric Co. (ID = 1132774) Radio
 
L-740 De Luxe Beam-a-Scope ; General Electric Co. (ID = 170317) Radio
L-740 De Luxe Beam-a-Scope ; General Electric Co. (ID = 831157) Radio L-740 De Luxe Beam-a-Scope ; General Electric Co. (ID = 831160) Radio
L-740 De Luxe Beam-a-Scope ; General Electric Co. (ID = 831161) Radio L-740 De Luxe Beam-a-Scope ; General Electric Co. (ID = 831159) Radio
L-740 De Luxe Beam-a-Scope ; General Electric Co. (ID = 720449) Radio L-740 De Luxe Beam-a-Scope ; General Electric Co. (ID = 164710) Radio
L-740 De Luxe Beam-a-Scope ; General Electric Co. (ID = 831158) Radio L-740 De Luxe Beam-a-Scope ; General Electric Co. (ID = 1053414) Radio
L-740 De Luxe Beam-a-Scope ; General Electric Co. (ID = 1056799) Radio L-740 De Luxe Beam-a-Scope ; General Electric Co. (ID = 1390031) Radio
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L-740 De Luxe Beam-a-Scope ; General Electric Co. (ID = 831157) Radio
General Electric Co.: L-740 De Luxe Beam-a-Scope [Radio] ID = 831157 933x816
Select picture or schematic to display from thumbnails on the right and click for download.
For model L-740 De Luxe Beam-a-Scope, General Electric Co. (GE); Bridgeport CT, Syracuse NY:
Ebay 140456969154
 
Country:  United States of America (USA)
Manufacturer / Brand:  General Electric Co. (GE); Bridgeport CT, Syracuse NY
Brand
 
Musaphonic
Year: 1941/1942 Type: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 7: 6SG7 6SA7 6SF7 6SC7 6K6GT 6K6GT 5W4GT
Principle Superhet with RF-stage; ZF/IF 455 kHz
Wave bands Broadcast plus 2 Short Wave bands.
Details
Power type and voltage Alternating Current supply (AC) / 110-125 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 6.5 inch = 16.5 cm
Power out 5.5 W (unknown quality)
from Radiomuseum.org Model: L-740 De Luxe Beam-a-Scope - General Electric Co. GE;
Material Wooden case
Shape Tablemodel with Push Buttons.
Dimensions (WHD) 17 x 11.5 x 11 inch / 432 x 292 x 279 mm
Notes The model General Electric L-740 De Luxe Beam-a-Scope has dial lamps: 2 Mazda Nº44. This three-band set covers the broadcast frequencies from 550-1720 Khz and shortwave from 1.7 - 5.2 and 5.2 - 18.1 Mhz. With seven tubes including an RF amplifier, it is a good receiver. Two 6K6 tubes work in a push-pull configuration.

Some info found on Internet by "Chas" (in S. Dartmouth, MA) about the Beam-a-Scope: "The rotatable loops in the later model consoles are usually model specific in design. They utilized different types of input circuitry built within the loop. Often the loop itself was shielded with a wire cage or foil. Sometimes an external antenna coupler is built in. Can be either extra turns on the main coil or a smaller inductor nested within the larger coil. If you want the full performance of the G-E try to find the correct Beam-A-Scope for that radio." We can add to that: Sometimes you will find two loop antennas called "Beam-s-Scopes" by General Electric. Then the second Beam-a-Scope comes into operation if the user chooses the highest shortwave band. With that, a better shortwave reception is achieved without a long wire antenna (which still would be better).
Price in first year of sale 54.95 $
Collectors' prices  
External source of data Ernst Erb
Source of data Collector's Guide to AR4.Ed.,Bunis, tube
Circuit diagram reference Rider's Perpetual, Volume 13 = 1942 and before
Mentioned in A flick of the switch 1930-1950
Literature/Schematics (1) General Electric Radio Service Notes 1939-1942
Literature/Schematics (2) Radio Retailing (R & Television R.) (July, August 1941.)
Literature/Schematics (3) Machine Age to J.Vol.2 Stein 97 (page 146.)

All listed radios etc. from General Electric Co. (GE); Bridgeport CT, Syracuse NY
Here you find 2419 models, 1606 with images and 1744 with schematics for wireless stes etc. French TSF for Télégraphie sans fil.


  
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