Radiola Superheterodyne AR-812 "Semi-Portable"
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alternative name
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RCA Manufacturing || Victor Talking Machine | ||||
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Year:
1924
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Category: Broadcast Receiver - or past WW2 Tuner | ||||
| Valves / Tubes | 6: UV199 UV199 UV199 UV199 UV199 UV199 |
| Main principle | Superheterodyne (common); ZF/IF 50 kHz; 2 AF stage(s); Reflex |
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| Tuned circuits | 5 AM circuit(s) |
| Wave bands | Broadcast only (MW). |
| Details | |
| Power type and voltage | Dry Batteries / 2 x 45 or 4 x 22,5 & 6 x 1.5 Volt |
| Loudspeaker | - This model requires external speaker(s). |
| Power out | |
| from Radiomuseum.org | Model: Radiola Superheterodyne AR-812 "Semi-Portable" - RCA RCA Victor Co. Inc.; New |
| Material | Wooden case |
| Shape | Portable set > 8 inch (also usable without mains) |
| Dimensions (WHD) | 35 x 11 x 11 inch / 889 x 279 x 279 mm |
| Notes | 2nd harmonic mixer; two dials (primary tuning control knobs) . "Portable". Self contained loop aerial. Speaker output selectable from V5 or V6.
V1 = RF & 1st IF reflexed. Siehe auch Triodensuperhets. |
| Price in first year of sale | 220.00 $ |
| External source of data | Ernst Erb |
| Source of data | Radio Collector`s Guide 1921-1932 |
| Mentioned in | The Radio Collector's Directory and Price Guide 1921 - 1965 |
| Literature/Schematics (1) | Radio Manufacturers of the 1920's, Vol. 3 |
| Literature/Schematics (2) | Radio Broadcast, Mar. 1924, p. 443 |
All listed radios etc. from RCA (RCA Victor Co. Inc.); New York (NY)
Here you find 4925 models, 2894 with images and 4000 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
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Hits: 1757 Replies: 0
rca: AR-812 'Semi-Portable'; Radiola Superhet
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Moisés Piedade
28.Aug.14 |
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Armstrong explains some of his research work trying to do the first super heterodyne radio viable. Obtained from a copy of Wireless Age, April 1924, stored in americanradiohistory.com Attachments
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Hits: 1561 Replies: 0
rca: Fritz Lang 'M'
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Mark Hippenstiel
11.Apr.13 |
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The AR-812 is pictured briefly in Fritz Lang's first sound film "M" from 1931.
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Hits: 2402 Replies: 0
rca: AR812; Superheterodyne
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Konrad Birkner † 12.08.2014
07.Mar.04 |
1 Maße: 890 / 280 / 290 ; Röhren: 6x UV199; erster Großseriensuper der Welt (über 160.000 Stück verkauft); Mischung mit 2.Harmonischer des Oszillators (wg. Störstrahlung). Batteriefächer links u. rechts; eingebaute Rahmenantenne; Mittelwelle; "tragbar"; |
End of forum contributions about this model
