• Country
• United States of America (USA)

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

• Year
• 1919–1921

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 43503

• • Brand: Synchrophase

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

• Number of Tubes
• 1

• Valves / Tubes
• VT-Class-I or B_Moorhead-Shaw

• Main principle
• TRF with regeneration

• Wave bands
• Broadcast only (MW).

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

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: CR1 - Grebe, A.H. & Co.; Richmond

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

• Dimensions (WHD)
• 19.5 x 6.5 x 8 inch / 495 x 165 x 203 mm

• Notes
• The Grebe CR-1 Regenerative Receiver had a wave length range of 170 to approximately 600 meters. This set comprised of a rotary loose-coupler with unit switches for the primary, a plate variometer, a grid variometer and a vacuum tube detector socket and rheostat.

• Net weight (2.2 lb = 1 kg)
• 13 lb (13 lb 0 oz) / 5.902 kg

• Price in first year of sale
• 200.00 $

• 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 1 = 1931/1934 (for 1919-1931)

• Mentioned in
• Radio Manufacturers of the 1920's, Vol. 2 (1920 Manhattan Electrical Supply Co. Catalog (MESCO))

• Other Models

• Here you find 188 models, 124 with images and 60 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)