Playmate Car-Portable 800T
World Radio Ltd.; London
- País
- Gran Bretaña (GB)
- Fabricante / Marca
- World Radio Ltd.; London
- Año
- 1963 ?
- Categoría
- Radio - o Sintonizador pasado WW2
- Radiomuseum.org ID
- 168716
Haga clic en la miniatura esquemática para solicitarlo como documento gratuito.
- Numero de transistores
- 6
- Principio principal
- Superheterodino en general; ZF/IF 470 kHz; 3 Etapas de AF
- Número de circuitos sintonía
- 5 Circuíto(s) AM
- Gama de ondas
- OM y OL
- Tensión de funcionamiento
- Pilas / 9 Volt
- Altavoz
- Altavoz dinámico (de imán permanente)
- de Radiomuseum.org
- Modelo: Playmate Car-Portable 800T - World Radio Ltd.; London
- Anotaciones
- Portable radio suitable for use in a car. Seperate aerial circuit for use in car avoids interference pick-up from ferrite aerial.
- Procedencia de los datos
- -- Schematic
- Documentación / Esquemas (1)
- Radio And Television Servicing books (R&TVS)
- Autor
- Modelo creado por Keith Staines. Ver en "Modificar Ficha" los participantes posteriores.
- Otros modelos
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Donde encontrará 7 modelos, 3 con imágenes y 3 con esquemas.
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Colecciones
El modelo Playmate Car-Portable es parte de las colecciones de los siguientes miembros.
Contribuciones en el Foro acerca de este modelo: World Radio Ltd.;: Playmate Car-Portable 800T
Hilos: 1 | Mensajes: 4
AS many members will know, AF117 and similar transistors such as AF115,116, and OC170/171 were used in a great many British made radios of the 1960s & early 70s. Due to the method of construction employed in the manufacture of these transistors, together with the fact that they are now between about 45 and 55 years old, they are prone to developing internal leaks or short circuits between one or more electrodes or between these and the metal case of the device. This os often referred to, at least on UK Vintage Radio forums as the 'Tin Whisker' problem, and whilst a cure can sometimes be effected, I prefer to replace transistors of this type with later devices such as the AF127. However these are now becoming scarce and relatively expensive at may £3.00 or £4.00 each in the UK, so recently I have used a less expensive alternative, such as the Russian made GT322A or 322B, often available from eBay for around £1.00 each. These work very well in the radios to which I have fitted them, most recently a Roberts R300 portable, without needing any circuit alterations or modifications.
Michael Goscombe † 1.8.20, 09.Apr.16