HAMMARLUND BC-779-A Army Signal Military Radio Receiver BC-779A Power Supply

( Brand: Hammarlund ), ( Manufacturer Part Number: BC-779-A ), ( Country Of Origin: United States ), ( Type: Receiver )

Review HAMMARLUND Vintage Army Signal Corp Military Radio Receiver Power Supply

The **Hammarlund BC-779A Army Signal Military Receiver with Original Power Supply** is a meticulously preserved and highly sought-after piece of vintage communications technology, embodying the rugged reliability and precision engineering of mid-20th-century military radio design. Originally developed for field use by the U.S. Army Signal Corps during the Cold War era, this **BC-779A** is a compact yet formidable **superheterodyne receiver** designed to operate in demanding environments, offering exceptional performance across a wide range of frequencies from **1.5 to 30 MHz** with a robust **crystal-controlled tuning system**. Its **vacuum tube circuitry**, featuring a **6BA6 converter tube, 6BA6 or 6BA6A oscillator, and 6BA6 or 6BA6A detector**, ensures stable and clear reception even under adverse conditions, making it ideal for tactical, field, and emergency communications. The receiver s **military-grade construction** includes a **durable metal chassis** with a **knurled tuning knob** for precise frequency adjustment, a **sensitive volume control**, and a **built-in antenna socket** for flexible deployment, whether mounted in a vehicle, set up in a field station, or used in a portable setup. The accompanying **original power supply unit** likely a **battery-operated or line-voltage transformer model** complements the receiver s functionality, providing the necessary **6.3V filament and high-voltage B supply** required for optimal tube operation. This combination of **historical significance, technical robustness, and operational versatility** makes the Hammarlund BC-779A a prized collector s item among ham radio enthusiasts, military historians, and vintage electronics aficionados. Whether restored to pristine working condition or preserved in its original state, this receiver stands as a testament to the ingenuity of early radio engineering, offering both a functional communication tool and a fascinating glimpse into the technological advancements of the mid-20th century.

The Hammarlund BC-779A is a classic military-grade shortwave receiver, originally designed for the U.S. Army in the 1940s. It remains a highly sought-after piece among radio enthusiasts, collectors, and shortwave listeners due to its historical significance and performance. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Hammarlund BC-779A**

1. **Historical and Military Significance**

The BC-779A was used by the U.S. Army during World War II and the Korean War, making it a prized collectible for military history buffs. Its association with Cold War-era communications adds to its appeal for historians and hobbyists.

2. **Exceptional Shortwave Performance**

The BC-779A is renowned for its wide coverage (1.5 to 30 MHz) and ability to receive weak signals, even in noisy environments. Its vacuum tube design (typically using 6L6, 6BA6, and 6X5 tubes) provides strong amplification and clarity, making it suitable for DXing (long-distance reception) and weak-signal work.

3. **Rugged and Reliable Construction**

Built to military specifications, the BC-779A is constructed with durable materials, including a steel chassis and heavy-duty components. This makes it more resilient than many modern consumer radios, though it requires proper maintenance.

4. **Versatile and Adjustable**

The receiver features a high degree of manual tuning and adjustment, including a variable capacitor for precise frequency selection and a built-in antenna tuner. This flexibility allows operators to optimize performance for different conditions.

5. **Modular and Upgradable**

The BC-779A was designed with modularity in mind, allowing for upgrades such as replacing tubes, adding accessories (like a power amplifier or external antenna), or even converting it to use modern components. Many enthusiasts have successfully modified these radios for contemporary use.

6. **Cult Following and Community Support**

Due to its popularity, there is a strong community of owners, restorers, and builders who share knowledge, parts, and restoration tips. This makes it easier to troubleshoot issues or find replacements for rare components.

7. **Aesthetic and Functional Design**

The BC-779A s vintage military aesthetic appeals to those who appreciate retro technology. Its large dials, knobs, and front-panel layout provide a tactile and immersive listening experience.

8. **Potential for Amateur Radio Use**

While not originally designed for amateur radio, the BC-779A can be adapted for ham radio use with the right modifications (e.g., adding a keyer or adjusting the power output). Some operators use it as a receiver for SSB or CW transmissions.

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### **Cons of the Hammarlund BC-779A**

1. **High Initial Cost**

Due to its rarity and historical value, a fully restored or original BC-779A can cost anywhere from $1,500 to $5,000 or more, depending on condition and provenance. Even a partially restored unit may require significant investment.

2. **Complexity and Steep Learning Curve**

The BC-779A is not a plug-and-play device. It requires knowledge of vacuum tube operation, radio theory, and basic electronics to set up, tune, and maintain. Beginners may find it overwhelming without guidance.

3. **Maintenance and Repairs**

Vacuum tubes are finicky and require periodic replacement (typically every few hundred hours of use). The radio also has moving parts (like the variable capacitor and tuning mechanisms) that can wear out over time. Restoring or repairing one often demands specialized tools and skills.

4. **Power Supply Requirements**

The original power supply for the BC-779A is a high-voltage, high-current unit that can be dangerous if mishandled. Modern power supplies may not be compatible without modifications, and building a safe and efficient supply is a challenge for many users.

5. **Limited Modern Features**

Unlike modern digital radios, the BC-779A lacks features such as digital tuning, memory presets, or built-in noise reduction. Everything is analog, requiring manual adjustments for optimal performance.

6. **Space and Portability**

The BC-779A is a large, heavy unit (weighing around 30 40 pounds with the power supply). It is not portable by modern standards and requires a dedicated space for operation.

7. **Availability of Parts and Tubes**

While the community helps with sourcing parts, some components (especially original military-grade parts) can be difficult to find. Tubes like the 6L6 and 6BA6 may require hunting through vintage electronics stores or eBay.

8. **Potential for Overkill**

For casual listeners or those primarily interested in modern digital radio, the BC-779A offers more complexity than necessary. A modern shortwave receiver (e.g., a Yaesu FRG-8000 or Icom IC-R8600) may provide similar coverage with far less hassle.

9. **Safety Risks**

The high-voltage components (especially the power supply) pose a risk of electric shock if not handled carefully. Users must be cautious when working on or near the radio.

10. **Time-Consuming Setup**

Even after purchase, setting up the BC-779A can be time-consuming. This includes aligning the tubes, tuning the receiver, and ensuring all components are functioning correctly. Some users spend months perfecting their setup.

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### **Conclusion**

The Hammarlund BC-779A is a remarkable piece of radio history with unmatched performance for shortwave listening and weak-signal work. Its military-grade construction, historical value, and cult-like following make it a unique and rewarding investment for dedicated enthusiasts. However, it is not a radio for everyone. The high cost, complexity, and maintenance requirements demand a significant commitment of time, money, and technical skill.

For those who are passionate about vintage electronics, military history, or analog radio technology, the BC-779A is an extraordinary addition to a collection. It offers an unparalleled listening experience and the satisfaction of working with a piece of engineering history. On the other hand, casual listeners or those seeking convenience may find modern alternatives more practical.

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### **Recommendation**

- You are a serious shortwave listener or DXer who appreciates analog performance and is willing to invest time in maintenance.

- You are interested in military history or vintage electronics and enjoy the challenge of restoring and operating a classic radio.

- You have experience with vacuum tubes, basic electronics, and are prepared to learn more about radio theory.

- You are part of or willing to engage with the BC-779A community for support and knowledge sharing.

- You have the space and patience to dedicate to this project, as it is not a quick or easy setup.

- You are looking for a modern, user-friendly radio with minimal setup or maintenance.

- You lack experience with electronics or are unwilling to learn the skills required to operate and maintain a vacuum tube radio.

- You prioritize portability or convenience over historical significance and analog performance.

- You are on a tight budget, as the cost of purchase, parts, and potential repairs can add up quickly.

- You are not prepared for the time commitment involved in restoring, tuning, and operating the radio.

- **Modern Shortwave Receivers:** Radios like the Yaesu FRG-8000, Icom IC-R8600, or Kenwood TR-9550 offer similar coverage with digital tuning and easier operation.

- **Vintage but Simpler Radios:** A Hallicrafters SX-121 or a National HC-150 are more accessible vintage receivers that still offer excellent performance.

- **Hybrid Approach:** Start with a modern radio and gradually explore vintage technology through smaller projects (e.g., a tube amplifier or a simple crystal set) before committing to a BC-779A.

Ultimately, the BC-779A is a radio for enthusiasts who value craftsmanship, history, and the art of analog radio. For everyone else, modern alternatives may better suit their needs.

Details:

Vintage ARMY Signal Corp Military Hammarlund BC-779A Radio Receiver with Power supply. Untested sold as is for restoration or parts.

part #: bc779 prices

• $11.99-$79.99

specifications hamamateuradio:

• brand: Hammarlund
• mpn: Bc-779-a
• country of origin: United States
• type: Receiver

offer hamamateuradio:

• sold: 0
• options: Seller-arranged-local-pickup
• availability: In Stock
• started: March 19, 2026
• quantity: 1

seller hamamateuradio:

• rating: 100.0%
• # reviews: 834
• city: Acton, Massachusetts

shipping hamamateuradio:

general hamamateuradio:

• condition: For parts or not working
• Radio Communication > Ham, Amateur Radio > Ham Radio Receivers

returns hamamateuradio:

• policy: No Returns

payments hamamateuradio:

• credit card: Visa
• other
• wallet: Apple-pay

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