RCA C-2A6 Cunningham Tv Radio Vacuum Tube 513

( Brand: Rca ), ( Manufacturer Part Number: C-2A6 ), ( Model: CUNNINGHAM C-2A6 ), ( Type: Vacuum Tube ), ( Unit Type: Unit ), ( Country Of Origin: United States )

Review RCA Cunningham Tv Radio Vacuum Tube New Old Stock Untested Item#513

The RCA C-2A6 Cunningham TV Radio Vacuum Tube, identified by its model number 513, is a rare and highly sought-after component from the golden age of electronics, embodying the ingenuity of mid-20th-century engineering. Designed for use in early television and radio receivers, particularly those manufactured by RCA and its affiliated brands like Cunningham, this tube represents a pivotal evolution in consumer electronics. The 513 is a **pentode** a type of vacuum tube with five electrodes specifically engineered as a **high-mu ( ) power amplifier**, making it ideal for driving the final stages of audio output in radio sets or the video signal in early cathode-ray tube (CRT) televisions. Its construction reflects the precision of the era, with a **glass envelope** sealed under high vacuum to house its internal components, including a **thoriated tungsten cathode**, a **heated indirectly by a filament**, and strategically arranged grids to modulate electron flow with exceptional efficiency. The tube s **octal base** ensures compatibility with a wide range of chassis designs, while its **high transconductance** (measured in micromhos) allows it to deliver clean, powerful amplification with minimal distortion, a critical feature in the days before solid-state technology could replicate its performance. Historically, the 513 was favored in high-end receivers like the RCA Cunningham models, which were known for their superior sound quality and reliability, often featuring custom-built cabinets and premium components. Today, the 513 remains a prized artifact for collectors and restorers of vintage electronics, as well as enthusiasts who appreciate the artistry of analog amplification. Its scarcity, combined with its technical sophistication, makes it a fascinating piece of history one that bridges the gap between the experimental radio circuits of the early 1900s and the transistorized electronics that would soon follow. Properly cared for, a well-preserved 513 tube can still function flawlessly after decades of storage, offering a tangible connection to the era when vacuum tubes dominated the landscape of home entertainment.

The RCA C-2A6 Cunningham TV/Radio Vacuum Tube (model 513) is a rare and highly sought-after piece of vintage electronics, particularly among collectors of 1950s American consumer technology. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Historical Significance and Collectibility**

The C-2A6 Cunningham is a product of RCA s early television and radio manufacturing era, dating back to the late 1940s or early 1950s. It represents a transitional period in consumer electronics, blending early television technology with radio functionality. As a result, it holds significant value for collectors of vintage electronics, particularly those interested in the evolution of home entertainment. Its rarity due to limited production and the fact that many were discarded or replaced makes it a prized item in auctions and collector circles.

2. **Technical Innovation**

The vacuum tube design reflects the engineering advancements of the time, including early cathode-ray tube (CRT) technology for television. The combination of TV and radio in one unit was a common feature in the late 1940s and early 1950s, catering to the growing demand for multi-functional home appliances. For enthusiasts or hobbyists, studying or restoring this unit can provide insight into vintage electronics and circuit design.

3. **Aesthetic Appeal**

The C-2A6 Cunningham likely features the sleek, mid-century modern styling characteristic of RCA products from this era. Its design often includes wood or metal cabinetry with chrome accents, giving it a nostalgic and retro charm. For decorators or collectors who appreciate vintage industrial design, this unit could serve as a unique conversation piece or functional artifact in a themed space.

4. **Potential for Restoration and Customization**

Vintage electronics like this one can be restored or modified by skilled hobbyists. The process of repairing or upgrading the vacuum tubes, circuitry, or even repurposing the unit (e.g., as a display piece or part of a retro-themed setup) can be a rewarding project. Some collectors enjoy the challenge of bringing these devices back to working order, which can enhance their value and personal satisfaction.

5. **Investment Potential**

Due to its rarity and historical value, the C-2A6 Cunningham could appreciate over time, especially if demand for vintage electronics continues to grow. Collectors often pay premium prices for well-preserved or restored units, making it a potential long-term investment. However, this is speculative and depends on market trends.

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### **Cons**

1. **Functionality and Reliability**

Vacuum tube electronics are notoriously fragile and prone to failure over time. The vacuum tubes themselves degrade, requiring periodic replacement or maintenance. Without proper expertise, restoring or repairing the unit can be challenging and costly. Many units may not function correctly even after restoration due to the complexity of vacuum tube circuits and the availability of replacement parts.

2. **High Cost of Acquisition**

Due to its rarity, the C-2A6 Cunningham is likely to be expensive, especially if it is in good condition or comes with documentation. Prices at auctions or from private sellers can range from several hundred to over a thousand dollars, depending on its rarity, condition, and provenance. This makes it a significant financial commitment, particularly for casual collectors or those on a budget.

3. **Maintenance and Upkeep**

Vacuum tube devices require specialized knowledge to maintain. Tubes need to be replaced periodically (typically every few years), and the unit may need occasional cleaning or circuit adjustments. Power supply issues, such as flickering or humming, are common and may require troubleshooting skills or professional assistance. The cost of tubes, tools, and expertise can add up over time.

4. **Limited Practical Use**

While the unit may function as a television and radio, modern standards for picture quality, sound, and usability far exceed those of a 1950s device. The screen resolution, color (if any), and audio quality will be poor by today s standards. For everyday use, this unit is impractical compared to modern flat-screen TVs and high-fidelity audio systems. It is primarily a collector s item or a novelty.

5. **Space and Storage Requirements**

Vintage electronics like this one often require dedicated space due to their size and weight. The cabinet may be bulky, and the unit may need to be stored or displayed in a way that protects it from dust, moisture, or physical damage. This can be a consideration for collectors with limited space or those who prioritize modern, space-efficient appliances.

6. **Ethical and Environmental Concerns**

Vacuum tubes contain materials like mercury and lead, which can be hazardous if the unit is not disposed of or repaired properly. Additionally, the production and disposal of vintage electronics raise environmental questions about sustainability. Buyers should consider the ethical implications of acquiring and maintaining such a device, particularly if they are not committed to long-term care.

7. **Dependence on Expertise**

Operating or repairing this unit may require knowledge of vintage electronics, including tube testing, circuit analysis, and soldering. Without access to a skilled technician or hobbyist community, troubleshooting issues can be difficult. This can be a barrier for casual buyers who lack the technical skills or resources to handle the device responsibly.

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### **Conclusion**

The RCA C-2A6 Cunningham TV/Radio Vacuum Tube is a fascinating and valuable piece of history, offering unique collectible appeal, technical intrigue, and aesthetic charm. However, it comes with significant challenges, including high acquisition and maintenance costs, limited practical utility, and the need for specialized knowledge to keep it functional. For collectors, hobbyists, or enthusiasts who appreciate vintage technology and are willing to invest time and resources into its preservation, this unit can be a rewarding and meaningful addition to their collection. For others, particularly those seeking modern functionality or practicality, the drawbacks may outweigh the benefits.

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### **Recommendation**

- You are a serious collector of vintage electronics, particularly RCA or mid-century American consumer products.

- You have the technical skills, patience, and resources to restore, maintain, or repair vacuum tube devices.

- You view the unit as a historical artifact or a display piece rather than a functional appliance.

- You are willing to invest in replacement tubes, tools, and potentially professional assistance to keep it operational.

- You are interested in the educational or nostalgic value of owning a piece of technological history.

- You prioritize modern functionality, picture quality, or ease of use over historical significance.

- You lack the technical expertise or interest in maintaining vacuum tube electronics.

- You are on a tight budget, as the acquisition and upkeep costs can be prohibitive.

- You do not have the space or environment to properly store or display the unit.

- You are primarily interested in practical, everyday use rather than collecting or hobbyist projects.

For most casual buyers, the C-2A6 Cunningham is best suited as a specialized collector s item rather than a practical purchase. If you are drawn to its historical value, consider starting with a less expensive or easier-to-maintain vintage device to build your skills before committing to a high-value, high-maintenance unit like this one.

Details:

RCA Cunningham C-2A6 TV Radio Vacuum Tube New Old Stock - Untested, Item#513, Tube.

part #: c2a6 prices

• $20.00-$599.00

specifications tubesocketvintagego:

• brand: Rca
• mpn: C-2a6
• model: Cunningham C-2a6
• type: Vacuum Tube
• unit type: Unit
• country of origin: United States

payments tubesocketvintagego:

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

shipping tubesocketvintagego:

• cost: $8.56
• transit: 4-11 Days
• type: Calculated
• service: UPS Ground, UPS Ground Saver
• carrier: UPS
• class: Standard, Economy

offer tubesocketvintagego:

• availability: In Stock
• quantity: 1
• options: Ship-to-home
• best offers: True
• sold: 0
• started: February 8, 2026

seller tubesocketvintagego:

• # reviews: 2742
• city: Santa Maria, California
• rating: 100.0%

general tubesocketvintagego:

• Vintage Audio Video > Vintage Parts Accessories > Vintage Tubes Tube Sockets
• condition: Used

returns tubesocketvintagego:

• policy: No Returns

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