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Marconiphone Two-Valve Receiver Type V2A, by Marconiphone Company, England, c. 1924
Inventory Number: 90029
Number of documents: 4
Document Type: Miscellaneous Note
Document Heading: Inscription - Inv. Num. 90029
Text:
"MARCONIPHONE V2.A / Type R.B.I.B. Long Range Model / INST. No. W/E. 3259" printed on celluloid plaque underneath range block holders. "BBC [LOGO] / G.P.O REG No 0178 / MARCONIPHONE V2A / LONG RANGE MODEL" transfer upon interior surface of case lid. "MARCONIPHONE / WAVE-LENGTH / 340 - 440 / METRES / C.P. 0158" printed on celluloid circular plaque upon side of rear wavelength plate. "MARCONIPHONE / WAVE-LENGTH / 300 - 390 / METRES" printed on celluloid circular plaque upon side of front wavelength plate. "MARCONIPHONE / TYPE R.B.I.B / REGENERATOR UNIT / FOR 300 - 500 / METRES" etched on side of generator unit'>regenerator unit.
Document Type: Miscellaneous Note
Document Heading: Manufacturer Details - Marconiphone Company
Text:
After World War I, the Marconi Company began producing non-industrial receivers, principally for the amateur market, at the Soho premises of The Marconi Scientific Instrument Company. In 1922, the Marconi Company formed the 'Marconiphone' department, to design, manufacture and sell domestic receiving equipment. This equipment complied with Post Office specifications and tests, and was therefore awarded the BBC authorisation stamp; initially sets were made at the Chelmsford Works. In December 1923, the 'Marconiphone' department was formed as a subsidiary of the Marconi Company. Some Marconiphone Company sets were made at the Sterling Telephone Company (STC) Works at Dagenham. However, design and research of these domestic receivers still continued at Chelmsford. In 1929, the Marconiphone was sold to the Gramophone Company, along with the right to use the trademark 'Marconiphone' and the copyright signature 'G. Marconi' on domestic receivers. Hence, many domestic receivers were produced bearing the Marconiphone trademark, but the ones manufactured after 1929 had no connection with the Marconi Company.
Document Type: Miscellaneous Note
Document Heading: Object Dating - Inv. Num. 90029
Text:
This item can be accurately dated to 1923-1924 as BBC logo ("TYPE APPROVED BY POSTMASTER GENERAL") was used from 1st November 1922 until September 1924. Instrument is also signed by Marconiphone Company which was founded in December 1923. Therefore, it is highly likely that instrument was made in 1924.
Document Type: Printed Documentation
Document Heading: Accompanying Note - Inv. Num. 90029
Text:
According to an accompanying note, this radio was rescued from a pile of junk thrown out by the relatives of an old man on his demise in the area of Shrewsbury (SALOP). It had been wrapped up in brown paper and stored on top of a cupboard since it stopped working in 1937, i.e. about 44 years. Regretably the other wood panel had been broken along with two bright emitter triodes. P.M.Kemp, the author of this note, suggested the original fault was the failure of the intervalve transformer.
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