7BK748 Ch= 4706R (?) capacity tuning
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Majestic Radio &: 7BK748 Ch= 4706R [Radio] ID = 1311379 933x689
Select picture or schematic to display from thumbnails on the right and click for download.
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| Year: 1947 ? | Category: Broadcast Receiver - or past WW2 Tuner | ||||
| Valves / Tubes | 7: 6J5 6SA7 6SK7 6SQ7 6H6 6V6 5Y3 |
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| Main principle | Superheterodyne (common); ZF/IF 455 kHz; 2 AF stage(s) |
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| Tuned circuits | 6 AM circuit(s) |
| Wave bands | Broadcast only (MW). |
| Details | |
| Power type and voltage | Alternating Current supply (AC) / 117 Volt |
| Loudspeaker | Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4.5 inch = 11.4 cm |
| Power out | |
| from Radiomuseum.org | Model: 7BK748 Ch= 4706R [capacity tuning] - Majestic Radio & Television Co |
| Material | Wooden case |
| Shape | Tablemodel, low profile (big size). |
| Dimensions (WHD) | 13.25 x 8 x 7 inch / 337 x 203 x 178 mm |
| Notes | The cap. tuning was introduced to modify the 4708 (Beitman 7-75) from inductive tuning to 4708R (Beitman 8-83) with capacitive tuning. R might stand for Revised. There are doubts whether a 4708R chassis would match a cabinet designed to take a 4706 chassis. Consequently we must assume that here a modified 4706 chassis was fit, which we call 4706R (similar to the a.m. 4708 story). |
| Net weight (2.2 lb = 1 kg) | 10 lb (10 lb 0 oz) / 4.540 kg |
| Mentioned in | Beitman Radio Diagrams, Vol. 07, 1947 (8-83) |
| Literature/Schematics (1) | Beitman Radio Diagrams, Vol. 08, 1948 (7-75) |
Model page created by Thomas Ranz. See "Data change" for further contributors.
All listed radios etc. from Majestic Radio & Television Co.,(post 1932)
Here you find 333 models, 163 with images and 273 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
