• Country
• United States of America (USA)

• Manufacturer / Brand
• Grigsby-Grunow (-Hinds) Co. (Majestic pre 1933); Chicago (IL)

• Year
• 1933

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 18770

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

• Number of Tubes
• 11

• Valves / Tubes
• G-58-S G-56 G-58-S G-58-S G-56 G-57-S G-57-S G-56 59 59 G-82

• Main principle
• Superhet with RF-stage; ZF/IF 175 kHz

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 117 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Majestic Abbeywood 363 Ch= 360 - Grigsby-Grunow -Hinds Co.

• Shape
• Console, Lowboy (legs < 50 %).

• Dimensions (WHD)
• 27.75 x 42.125 x 12.625 inch / 705 x 1070 x 321 mm

• Notes

• Introduced Feb. 1933. The series 300 models are fitted either with a large G-14-F speaker or have twin speaker G-19-B and G-19-C. Grigsby-Grunow uses here the first time their "Automatic Synchro-Silent Tuning", variing a tuning light by a reactor with 3 legs of iron core. Two legs are connected in series with the pilot light, while the winding on the center leg is connected in series with the plates of the RF First Detector, and IF tubes. An electrolytic condenser (C-5) shunts the center winding for not getting any AC if there are unbalances. They call the system also "Reactance Resonance Indicator". When a station is tuned in, an automatic bias voltage is built across Resistor R-9, causing the pilot light to dim.
  Six legged console with stretcher base.
  Typing error in PWC-Stein "Abbeyroad".

• Price in first year of sale
• 89.50 $

• External source of data
• E. Erb 3-907007-36-0

• Source of data
• Pre-War Consoles

• Circuit diagram reference
• Die «Thali Schemasammlung» führt das Modell.

• Literature/Schematics (1)
• Beitman Radio Diagrams, Vol. 01, 1926-1938 (see page 97 model 360 note)

• Literature/Schematics (3)
• The Grigsby-Grunow Co. Folder for 1933 for Majestic Radios.

• Other Models

• Here you find 201 models, 122 with images and 157 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Grigsby-Grunow (-Hinds) Co. (Majestic pre 1933); Chicago (IL)