Technical Specifications & Details
The paper diagram glued to the back provides critical specifications for servicing and operating this vintage electronic device:
- Chassis Series: 5A3 [1, 2]
- Power Requirements: 117 Volts, 60 Cycles (Hz), AC only, pulling 30 Watts. [1]
- Intermediate Frequency (I.F.): 455 KC (kHz). [1]
- Tube Lineup: This utilizes a standard 5-tube superheterodyne configuration (often referred to as an "All-American Five" layout) featuring:
- 12BE6: Pentagrid Converter (Oscillator/Mixer)
- 12BA6: IF Amplifier
- 12AV6: Detector / AVC / Audio Amplifier
- 50C5: Audio Power Output
- 35W4: Half-Wave Vacuum Rectifier []
⚠️ Crucial Safety Warning for Restoration
If you plan to plug in or restore this radio, please be aware that this specific era of electronics uses a "transformerless" AC/DC chassis design. One side of the incoming power cord power line connects directly to the metal internal chassis framework.
- Shock Hazard: If plugged in with a non-polarized plug upside down, the exposed metal components or control shafts inside could become live with 117V AC power.
- Safety Measure: Always use a modern isolation transformer on your workbench while troubleshooting, and replace the old filter capacitors before powering it up to avoid destroying components or creating a fire risk
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