U511
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alternative name
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Ultra Radio and Television | ||||
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| Year: 1947 ? | Category: Broadcast Receiver - or past WW2 Tuner | ||||
| Valves / Tubes | 5: 10C1 10F9 10LD11 10P14 10P14 | ||||
| Semiconductors (the count is only for transistors) | Metal-rectifier |
| Main principle | Superheterodyne (common); ZF/IF 471 kHz; 2 AF stage(s) |
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| Tuned circuits | 6 AM circuit(s) |
| Wave bands | Broadcast, Long Wave and Short Wave. |
| Details | |
| Power type and voltage | AC/DC-set / 200-250 Volt |
| Loudspeaker | Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) |
| Power out | 6 W (unknown quality) |
| from Radiomuseum.org | Model: U511 - Ultra Electric Ltd.; London |
| Material | Wooden case |
| Shape | Tablemodel, slant panel. |
| Notes | Push Pull Beam Tetrode audio output. Wavebands:
IF trap on aerial with variable capacitor. Tone control. Gram/PU sockets for crystal/ceramic and magnetic (using a transformer). Requires external aerial. Separate dropper taps for series heaters and HT according to mains voltage. Price excludes tax of £5.75 in 1947 Mains Scale/Dial Lamp 15W (sewing machine type) Warning: AC/DC type with potentially live chassis (either when on or off!), deliberately uses single pole mains switch in "Neutral" to chassis for minimal hum pickup on volume control. So isolation capacitors should be Y rated safety types, Earth to Chassis, Aerial, Magnetic and Crystal "P.U./gram" inputs. |
| Price in first year of sale | 26.75 GBP |
| Literature/Schematics (1) | Radio And Television Servicing books (R&TVS) (1951 Edition Vol I pg 530) |
Model page created by Bartosz Szwed. See "Data change" for further contributors.
All listed radios etc. from Ultra Electric Ltd.; London
Here you find 218 models, 129 with images and 149 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
