Playmate Car-Portable 800T
World Radio Ltd.; London
- Produttore / Marca
- World Radio Ltd.; London
- Anno
- 1963 ?
- Categoria
- Radio (o sintonizzatore del dopoguerra WW2)
- Radiomuseum.org ID
- 168716
Clicca sulla miniatura dello schema per richiederlo come documento gratuito.
- Numero di transistor
- 6
- Principio generale
- Supereterodina (in generale); ZF/IF 470 kHz; 3 Stadi BF
- N. di circuiti accordati
- 5 Circuiti Mod. Amp. (AM)
- Gamme d'onda
- Onde medie (OM) e onde lunghe (OL).
- Tensioni di funzionamento
- Batterie a secco / 9 Volt
- Altoparlante
- AP magnetodinamico (magnete permanente e bobina mobile)
- Radiomuseum.org
- Modello: Playmate Car-Portable 800T - World Radio Ltd.; London
- Annotazioni
- Portable radio suitable for use in a car. Seperate aerial circuit for use in car avoids interference pick-up from ferrite aerial.
- Fonte dei dati
- -- Schematic
- Letteratura / Schemi (1)
- Radio And Television Servicing books (R&TVS)
- Autore
- Modello inviato da Keith Staines. Utilizzare "Proponi modifica" per inviare ulteriori dati.
- Altri modelli
-
In questo link sono elencati 7 modelli, di cui 3 con immagini e 3 con schemi.
Elenco delle radio e altri apparecchi della World Radio Ltd.; London
Collezioni
Il modello Playmate Car-Portable fa parte delle collezioni dei seguenti membri.
Discussioni nel forum su questo modello: World Radio Ltd.;: Playmate Car-Portable 800T
Argomenti: 1 | Articoli: 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