Champion 781A / 78IB Portable Receiver Circuit Diagram

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🏷️ Basic Information Identification Make: Champion Model: 781A / 78IB Portable Receiver Year: Unknown Generation: Unknown 📋 Manual Details Documentation Manual Type: Circuit Diagram Language: English Page Count: Likely single...

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类型: Portable Receiver

斯库: 17304

标签: 781A 78IB Champion Portable Receiver

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Description

🏷️ Basic Information

Identification

Make:

Champion

Model:

781A / 78IB Portable Receiver

Year:

Unknown

Generation:

Unknown

📋 Manual Details

Documentation

Manual Type:

Circuit Diagram

Language:

English

Page Count:

Likely single sheet or few pages

Format:

Diagrammatic

📄 Receiver Specs

Configuration

Valve Count:

Seven (including rectifier)

Wave Bands:

Features

Bandspreading:

Electrical

Rf Amplifier:

Yes (separate stage)

Output Stage:

Separate valves for battery and mains operation

Power Source

Operation Modes:

Battery and Mains

Audio

Output Type:

Amplified

Tuning

Tuning Mechanism:

Likely variable capacitor

Construction

Portability:

Portable

Components

Rectifier Type:

Valve (specified as part of the seven valves)

Signal Processing

Intermediate Frequency Stages:

Implied by valve count and typical superheterodyne design

Frequency Coverage

Am Bands:

Likely includes Medium Wave and Short Wave bands

Fm Bands:

Possible, depending on specific wave band allocation

Display

Tuning Indicator:

Likely a dial or illuminated indicator

Antenna

Antenna System:

Built-in or external connection possible