RD301

Marelli (Radiomarelli); Sesto San Giovanni (MI)

Data
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  • Year
  • 1960/1961
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 103886

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

 Technical Specifications

  • Number of Transistors
  • 6
  • Main principle
  • Superheterodyne (common); ZF/IF 455 kHz
  • Tuned circuits
  • 5 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Dry Batteries / 3 x 1,5 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 9 cm = 3.5 inch
  • Power out
  • 0.15 W (unknown quality)
  • Material
  • Special material, described in the notes.
  • from Radiomuseum.org
  • Model: RD301 - Marelli Radiomarelli; Sesto
  • Shape
  • Very small Portable or Pocket-Set (Handheld) < 8 inch.
  • Dimensions (WHD)
  • 175 x 100 x 54 mm / 6.9 x 3.9 x 2.1 inch
  • Notes

  • Custodia bicolore di materiale infrangibile

    NOTE:- Il modello 301 fu prodotto dalla Radiomarelli sia col marchio Radiomarelli, e in tal caso lo troviamo indicato con la sigla RD 301, che col marchio WEST, in questo caso indicato con la sigla DS 301. Lo schema elettrico è disponibile sia sul Volume I  (sigla RD) che sul Volume III (sigla DS) degli "Schemari di Apparecchi Radio a Transistor" editi nella prima metà degli anni '60 dalla CELI, Bologna (I). Il modello 301 fu sostituito già nel 1961 dal modello 304 (sia marchiato Radiomarelli che WEST). I due modelli differiscono poco esteriormente (per le differenze si veda su RMorg il modello 304!) ma più marcatamente nell'elettronica che vede l'impiego di chassis e componenti diversi.

    Altra particolarità del modello 301 è quella di essere il gemello italiano dei tre modelli americani RCA della serie T-1, "The RIO".  Inoltre il modello 301 usa lo stesso telaio circuito stampato (chassis) del modello 303. Sugli chassis di questi due modelli è infatti riportata la stessa sigla: 931489-1 (2).

    (Aggiornamenti sono in corso)

    NOTES: - The 301 model was produced by Radiomarelli both with the Radiomarelli brand, and in this case we find it indicated with the initials RD 301, and with the WEST brand, in this case indicated with the initials DS 301. The complete schematic diagram is available both on Volume I (initials RD) and Volume III (initials DS) of the "Schemari di  Apparecchi Radio a Transistor" published in the first half of the 1960s by CELI, Bologna (I). The 301 model was replaced already in 1961 by the 304 model (both Radiomarelli and WEST branded). The two models differ slightly from the outside (for the differences, see the model 304 on RMorg!) but more markedly in the electronics which sees the use of different chassis and components. Another peculiarity of the 301 model is that it is the Italian twin of the three American RCA models of the T-1 series, "The RIO".

    In addition, the 301 model uses the same printed circuit board (chassis) as the 303 model. Both chassis of these sets show the same numbering on each: 931489-1 (2).

    (Updates are in progress)

  • Net weight (2.2 lb = 1 kg)
  • 0.7 kg / 1 lb 8.7 oz (1.542 lb)
  • Price in first year of sale
  • 24,800.00 ITL
  • Literature/Schematics (1)
  • -- Schematic
  Le prime Radiomarelli a transistor e la RCA (Gentile concessione L.Salvatore/ARM) 3988 KB
  Radiomarelli and RCA (by courtesy of L.Salvatore e R. Davidson) 1418 KB
  • Documents regarding this model
  • Author
  • Model page created by Dirk Taekels. See "Data change" for further contributors.

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