• Country
• United States of America (USA)

• Manufacturer / Brand
• DeForest Radio Telephone & Telegraph Co. (De Forest); New York

• Year
• 1921

• Category
• Radio module pre 1926 (not a part, not a key)

• Radiomuseum.org ID
• 201518

• • alternative name: Lee De Forest Mfg.

• Main principle
• Tuner pre 1926 (not a wave trap)

• Wave bands
• Broadcast (MW) and Long Wave.

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Interpanel Tuner MT-200 - DeForest Radio Telephone &

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

• Dimensions (WHD)
• 12.5 x 9 x 0 inch / 318 x 229 x 0 mm

• Notes
• The De Forest MT-200 Interpanel Tuner covered the 150-20,000 Meters wavelength range. This tuner utilized the geared honeycomb coil mounting for three coils wired with a double primary. The two variable vernier condensers were .001 mfds and .0015 mfds. This tuner was available with or without a cabinet.

• Net weight (2.2 lb = 1 kg)
• 18 lb (18 lb 0 oz) / 8.172 kg

• Literature/Schematics (1)
• Deforest Radio Equipment Catalog H page 10

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

• Other Models

• Here you find 158 models, 132 with images and 16 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from DeForest Radio Telephone & Telegraph Co. (De Forest); New York