Radiomobile 4220 Control Unit
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His Master's Voice: Radiomobile 4220 [Car Radio] ID = 492132 591x700
Select picture or schematic to display from thumbnails on the right and click for download.
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| Year: 1959 ? | Category: Car Radio, perhaps also + sound player/recorder | ||||
| Valves / Tubes | 2: X78 W77 | ||||
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| schematic requested | |||||
| Main principle | Superheterodyne (common) |
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| Wave bands | Broadcast (MW) and Long Wave. |
| Details | |
| Power type and voltage | Powered by external power supply or a main unit. |
| Loudspeaker | - For headphones or amp. |
| Power out | |
| from Radiomuseum.org | Model: Radiomobile 4220 [Control Unit] - His Master's Voice Masters, |
| Material | Metal case |
| Shape | Chassis only or for «building in» |
| Dimensions (WHD) | 4.25 x 5.25 x 7 inch / 108 x 133 x 178 mm |
| Notes | Radio control unit, made by S Smith & Sons (Radiomobile) Ltd. 4 MW push buttons & 1 LW button (preselectors). Requires seperate unit comprising of IF, Audio, & PSU stages. See here and here. |
Model page created by Keith Staines. See "Data change" for further contributors.
All listed radios etc. from His Master's Voice (Masters, HMV, H.M.V., Marconi); Hayes, Middlesex, GB
Here you find 395 models, 283 with images and 237 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
