• Country
• United States of America (USA)

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

• Year
• 1921

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 192228

• • Brand: Synchrophase

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Wooden case

• from Radiomuseum.org
• Model: RLVD Variable Inductance Unit - Grebe, A.H. & Co.; Richmond

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

• Notes
• Grebe Type RLVD Variable Inductance Unit, but with two additional binding posts, thus allowing two posts for rotor connections and two for the stator. This was a boxed instrument for the experimenter similar to the AMRAD boxed sets of the same time period.

• Price in first year of sale
• 17.00 $

• Literature/Schematics (1)
• 1921 Mesco catalog page 102

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

• 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)