Amplifier 49A or 49B
Use red slider bar for more.
Western Electric: Amplifier 49A or 49B [Ampl/Mixer] ID = 1194234 304x312
Select picture or schematic to display from thumbnails on the right and click for download.
|
|
||||
| Year: 1929 ?? | Category: Audio Amplifier or -mixer | ||||
| Valves / Tubes | 2: 239A or 264A 239A or 264A |
|---|
| Main principle | Audio-Amplification |
|---|---|
| Wave bands | - without |
| Details | |
| Power type and voltage | Powered by external power supply or a main unit. / 12 & 90 Volt |
| Loudspeaker | - For headphones or amp. |
| Power out | |
| from Radiomuseum.org | Model: Amplifier 49A or 49B - Western Electric Company Inc.; |
| Material | Metal case |
| Shape | Chassis only or for «building in» |
| Notes | Sound-on-film photoelectric cell preamplifier. The 49B got more reliable filament rheostats than the 49A. Otherwise both models are identical. There are 49As around with rheos replaced, hence completely identical to the 49B. |
Model page created by Gottfried Silberhorn. See "Data change" for further contributors.
All listed radios etc. from Western Electric Company Inc.; New York (NY)
Here you find 149 models, 124 with images and 27 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
