Marconi 257 (File : 0 Marconi_Marconiphone-257-1936.Broadcaster.Radio |
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Country | Great Britain (UK) |
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Manufacturer | Marconi Co. (Marconiphone, Marconi's Wireless Telegraph Co. Ltd.), GB (not tubes - see also HMV His Master's Voice) |
Model | 257 - Marconi Co. Marconiphone, |
Year: 1935 | Broadcast Receiver |
Valves | 4: X21 VS24 HD21 QP21 |
Technology | IF 456 kHz |
Wave Bands | Broadcast (MW) and Long Wave. |
Power Type | Batteries / 2 & 9 & 166 Volt |
Source | Book: Bcast Vol: Mar Page: 20 |
Source | Book: Bcast Vol: .May 16 Page: 25 |
Source | Book: Trader Vol: 143.pdf |
Source | Book: Trader Vol: 650.pdf |
Source | MyFile: Marconi_Marconiphone-257.pdf |