• Country
• United States of America (USA)

• Manufacturer / Brand
• General Electric Co. (GE); Bridgeport CT, Syracuse NY

• Year
• 1936

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 42032

• • Brand: Musaphonic

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

• Number of Tubes
• 15

• Valves / Tubes
• 6K7 6K7 6L7 6K7 6K7 6H6 6H6 6C5 6F6 6J7 6K7 6L6 6L6 5Z4 5Z4

• Main principle
• Superhet with RF-stage; ZF/IF 465 kHz; 3 AF stage(s)

• Wave bands
• Broadcast, Long Wave and more than two Short Wave bands.

• Power type and voltage
• Alternating Current supply (AC) / 25 or 60 cycles: 105 - 120 or 115; 125; 220; 240 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 15 inch = 38.1 cm

• Power out
• 30 W (37.5 W max.)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Colorama E-155 - General Electric Co. GE;

• Shape
• Console with any shape - in general

• Notes
• The General Electric model E-155 is the top model of the Colorama line. It is listed at Rider's GE 8-82 through 8-92 and has a Pentagrid Converter. The E-155 features the Colorama tuning indicator (see post 5 etc.). A 6K7 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 a novelty in 1936 for GE sets - the Magic Eye was just on the market but GE wanted first to have it's own gadget which was a problem to service men and the cost was over twice that of the tuning eye. There are two additional "Personalizer Lights".
  
  The model E-155 has AFC (Automatic Frequency control) and silent tuning, noise limiter and degeneration. The limiter control is a 6H6. The model can have a 25 cycle (C) or 60 cycle mains transformer which came in two versions, one fix for 105-120 volts (A), the other for 105 to 250 volts with 4 tappings (V). Band A (long wave) is for 140 - 420 kc, the band B (Broadcast) covers 540 - 1620 kc, the band C (Fishery, Police etc.) 1610 - 5580 kc and band D (SW) 5.5 - 18.1 mc and E 17.5 - 70 mc (UHF).

• 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 8 = 1937 and before

• Mentioned in
• Pre-War Consoles

• Other Models

• Here you find 2918 models, 2141 with images and 2044 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from General Electric Co. (GE); Bridgeport CT, Syracuse NY