His Master's Voice 4100 A / 4101 B

His Master's Voice (Masters, HMV, H.M.V., Marconi); Hayes, Middlesex, GB

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  • Year
  • 1955 ?
  • Category
  • Car Radio, perhaps also + sound player/recorder
  • Radiomuseum.org ID
  • 309250

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

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • Superheterodyne (common); ZF/IF 465 kHz
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Powered by external power supply or a main unit. / 6 or 12 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 2.5 W (unknown quality)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: His Master's Voice 4100 A / 4101 B - His Master's Voice Masters,
  • Shape
  • Chassis only or for «building in»
  • Notes

  • The HMV 4100 A is a 12 volt MW (187 - 570 metres) and LW (1000-2000 metres) 5 valve car radio employing push button permeability tuning with a 'His Master's Voice' badge, custom built and marketed by Smiths & Sons (Radiomobile) Ltd.. Export versions may have an 'Emitron' brand badge. Provision is made for push-button pre-selection of three radio stations (two MW, one LW) in addition to manual tuning. The receiver is comprised of two units, a control unit and a combined Amplifier/Power Unit Type A for 12 volts (the Type B is for 6 volts). High Tension power supply is provided by a non synchronous vibrator. The units are finished in black crystalline enamel with chrome plated bezel and knob trims on the control unit, or to car manufacturer's specification.

    The HMV Model type 4101 employs the same control unit with a Type B combined Amplifier/Power Unit for a 6 volt power supply.

    Dimensions Control Unit :  178 x 51 x 140 mm (HWD) ;  Weight : 1.47kg
          Amplifier/Power Unit :  200 x 114 x 149 mm (HWD) ;  Weight :  2.72kg

    The similar HMV 4102 A (12 volt) and HMV 4103 B (6 volt) export models are similar but have only MW.

  • Mentioned in
  • - - Manufacturers Literature (1955 HMV car radio catalogue)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Owner's Manual dated April 1956)

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