🏷️ Basic Information Identification Make: Champion Model: 887 / 851 3 Receiver Year: N/A Generation: N/A 📋 Manual Details Document Information Manual Type: Circuit Diagram Language: English Page Count: 3 Format: PDF Compatibility: Win/Mac Print Support: Yes 📄 Receiver Features Tuning Wavebands: Three Tuning Method: N/A Design Type: Transportable Receiver Valve Count: 4 Valve Inclusion: Including rectifier Aerial Aerial Type: Internal Ferrite Rod Aerial Power Source Power Source Type: N/A Audio Speaker Type: N/A Controls Control Layout: N/A Connectivity External Connections: N/A 📄 Circuit Details Component Information Circuit Diagram Purpose: Troubleshooting and Repair Key Components Indicated: Valves, rectifier, tuning circuits, audio amplification stages Circuit Logic Signal Path: N/A Power Supply Circuitry: N/A Schematic Detail Level: Detailed