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Colorama E-101

Colorama E-101 ; General Electric Co. (ID = 1741403) Radio
 
Colorama E-101 ; General Electric Co. (ID = 1741404) Radio
 
Colorama E-101 ; General Electric Co. (ID = 1741405) Radio
 
Colorama E-101 ; General Electric Co. (ID = 1741406) Radio
 
Colorama E-101 ; General Electric Co. (ID = 1741407) Radio
 
Colorama E-101 ; General Electric Co. (ID = 1741408) Radio
 
Colorama E-101 ; General Electric Co. (ID = 1741409) Radio
 
Colorama E-101 ; General Electric Co. (ID = 1741410) Radio
 
Colorama E-101 ; General Electric Co. (ID = 1741412) Radio
 
Colorama E-101 ; General Electric Co. (ID = 1741413) Radio
Colorama E-101 ; General Electric Co. (ID = 641443) Radio Colorama E-101 ; General Electric Co. (ID = 641444) Radio
Colorama E-101 ; General Electric Co. (ID = 1741358) Radio Colorama E-101 ; General Electric Co. (ID = 1741359) Radio
Colorama E-101 ; General Electric Co. (ID = 641445) Radio Colorama E-101 ; General Electric Co. (ID = 641446) Radio
Colorama E-101 ; General Electric Co. (ID = 641447) Radio Colorama E-101 ; General Electric Co. (ID = 641448) Radio
Colorama E-101 ; General Electric Co. (ID = 1029336) Radio Colorama E-101 ; General Electric Co. (ID = 1029337) Radio
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Colorama E-101 ; General Electric Co. (ID = 641443) Radio
General Electric Co.: Colorama E-101 [Radio] ID = 641443 529x700
Select picture or schematic to display from thumbnails on the right and click for download.
For model Colorama E-101, General Electric Co. (GE); Bridgeport CT, Syracuse NY:
Front View - Restored.
 
Country:  United States of America (USA)
Manufacturer / Brand:  General Electric Co. (GE); Bridgeport CT, Syracuse NY
Brand
 
Musaphonic
Year: 1936 perfect model Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 10: 6K7 6A8 6J7 6K7 6K7 6H6 6C5 6F5 6L6 5Z4
Main principle Superhet with RF-stage; ZF/IF 465 kHz; 2 AF stage(s)
Tuned circuits 9 AM circuit(s)
Wave bands Broadcast, Short Wave(s) and Police.
Details Visual Tuning Indicator pre Eye
Power type and voltage Alternating Current supply (AC) / Either Transformer: 50-60 cycles, 105-120 or 25-60 cycles, 105-120 or 40-60 cycles115; 125; 220; 240 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 8 inch = 20.3 cm
Power out 6.5 W (14 W max.)
from Radiomuseum.org Model: Colorama E-101 - General Electric Co. GE;
Material Wooden case
Shape Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.
Dimensions (WHD) 15.75 x 20.8 x 9.5 inch / 400 x 528 x 241 mm
Notes

The General Electric E-101 is an AC operated 10 tube BC, Police and SW band receiver. Has dual speed tuning controls, with fast tuning ratio 8:1 and vernier tuning ratio 40:1. 

The General Electric models E-101, E-105 and E-106 share the same schematic (Rider's GE 7-29 through 7-32 and GE Service manual 1935-1939 pages 213 to 224) and feature the Colorama tuning indicator (see post 5 etc.). The triode 6C5 commands depending on the AGC line the saturation of the "magnetic amplifier", a saturable core reactor. The reactor is in series with a row of 4 red stained pilot lamps and 3 green stained light bulbs behind the scale which turn the light to green when a carrior (station) is tuned in. Weak stations will produce a small color change and strong stations larger changes - a smooth process. This was then a novelty for GE sets - the Magic Eye was just on the market but GE wanted to first have it's own gadget which was a problem to service men and the cost was over twice that of the tuning eye.

The 6J7 is for the AFC - not used in models E-91 and E-95. The band B (Broadcast) covers 540 - 1680 kc, the band C (Fishery, Police etc.) 1680 - 6000 kc and band D (SW) 6 - 18 mc.

The E-101 was available with 3 different power transformers:

Rating Label Input Voltage (Volts) Frequency (Cycles)
A 105-120 50-60
C 105-120 25-60
V (Universal transformer) Taps at 115, 125, 220, 240 40-60

Note: Stein "Cathedral & Tombstone Radios" lists 4 bands for this model (model actually has 3 bands).

External source of data Ernst Erb
Source of data The Radio Collector's Directory and Price Guide 1921 - 1965
Circuit diagram reference Rider's Perpetual, Volume 7 = 1936 and before
Mentioned in Guide to Old Radios
Literature/Schematics (1) Beitman Radio Diagrams, Vol. 01, 1926-1938 (Page 71)
Literature/Schematics (2) Machine Age to Jet Age II (page 139.)
Literature/Schematics (3) Cathedral & Tombstone Radios (page 119.)
Literature/Schematics (4) General Electric Service Notes (1935-1939, pages 213-224)


All listed radios etc. from General Electric Co. (GE); Bridgeport CT, Syracuse NY
Here you find 2718 models, 1911 with images and 1914 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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