• Country
• United States of America (USA)

• Manufacturer / Brand
• Grebe, A.H. & Co.; Richmond Hill (NY)

• Year
• 1921

• Category
• Radio module post 1925 (not a part, not a key)

• Radiomuseum.org ID
• 186324

• • Brand: Synchrophase

• Number of Tubes
• 3

• Valves / Tubes
• UV200 UV201 UV201

• Main principle
• Detector with Vacuum Tube (Valve), no tuner; 2 AF stage(s)

• Wave bands
• - without

• Power type and voltage
• Storage and/or dry batteries

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Wooden case

• from Radiomuseum.org
• Model: RORD Type 2 [Thumb wheel rheostat knobs] - Grebe, A.H. & Co.; Richmond

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Dimensions (WHD)
• 10.75 x 7 x 7 inch / 273 x 178 x 178 mm

• Notes
• This is the second version of the Grebe RORD vacuum tube detector /2-Stage Audio Amplifier. This version of the Grebe RORD had the rheostat windings moved to the backside of the front panel. Sometime in 1921 Grebe redesigned the early rheostat assembly to use a thumb wheel for adjustment and windings behind the front panel in a semi circle. The RORD was typically paired with such tuners/receivers as the Grebe CR-2 or CR-3.

• Price in first year of sale
• 140.00 $

• Mentioned in
• Radio Manufacturers of the 1920's, Vol. 2 (Page 54)

• Author
• Model page created by Alan Larsen. See "Data change" for further contributors.

• Other Models

• Here you find 188 models, 124 with images and 61 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Grebe, A.H. & Co.; Richmond Hill (NY)