• Country
• Great Britain (UK)

• Manufacturer / Brand
• Colvern, Romford

• Year
• 1935 ?

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 168276

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

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

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Bakelite case

• from Radiomuseum.org
• Model: Radio coil RM3S - Colvern, Romford

• Dimensions (WHD)
• 88 x 74 x 85 mm / 3.5 x 2.9 x 3.3 inch

• Notes
• RM3S radio coil is dual range HF valve coupling coil with reaction winding and wawe change switch contained in coil. Originaly designed to meet the requirements of constructing a three valve set with single HF stage, this coil forms the input to the detector.

• Literature/Schematics (1)
• - - Manufacturers Literature

• Author
• Model page created by Sinisa Trlin. See "Data change" for further contributors.

• Other Models

• Here you find 2 models, 2 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Colvern, Romford