Crystal Junior Receiver Type RB2, by Marconiphone, 1922. This simple and relatively inexpensive set was made by the'marconiphone' department of the Marconi Company, formed in 1922 to manufacture and sell to domestic wirelesses. With alternative galena and carborundum crystals, the Marconiphone Crystal Junior receiver was designed to give clear reception on headphones within a range of 25 miles from a broadcasting station.

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Crystal Junior Receiver Type RB2, by Marconiphone, 1922. This simple and relatively inexpensive set was made by the'marconiphone' department of the Marconi Company, formed in 1922 to manufacture and sell to domestic wirelesses. With alternative galena and carborundum crystals, the Marconiphone Crystal Junior receiver was designed to give clear reception on headphones within a range of 25 miles from a broadcasting station.

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Size: 5465px × 3838px
Location:
Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 20th, archival, archive, broadcasting, carborundum, century, company, crystal, crystals, galena, headphone, historical, history, junior, manufacture, marconi, marconiphone, rb2, receiver, technology, type, wirelesses