• Country
• United States of America (USA)

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

• Year
• 1921

• Category
• Commercial Transmitter & Receiver (TRX not Amateur)

• Radiomuseum.org ID
• 43533

• • Brand: Synchrophase

• Number of Tubes
• 1

• Valves / Tubes
• UV200

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

• Loudspeaker
• - For headphones or amp.

• from Radiomuseum.org
• Model: KT1 - Grebe, A.H. & Co.; Richmond

• Shape
• Portable set > 8 inch (also usable without mains)

• Notes
• Portable Transceiver.
  Receiver: Audion Detector;
  Transmitter: Spark Coil.

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

• 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)