COLLINS 70E-24 Tuned Oscillator Radio Receiver

( Brand: Collins ), ( Manufacturer Part Number: 70E-24 ), ( Type: Pto ), ( Color: Silver ), ( Country Of Origin: United States )

Review COLLINS Tuned Oscillator Pto Radio Receiver

The Collins 70E-24 Tuned Oscillator Receiver is a legendary piece of analog radio engineering, celebrated for its unparalleled performance, durability, and precision in the realm of shortwave and medium-wave listening. Designed and manufactured by the Collins Radio Company in the mid-20th century, this fully transistorized (though originally built with vacuum tubes) superheterodyne receiver exemplifies the pinnacle of amateur and broadcast band radio technology from its era. With its robust construction and meticulously crafted circuitry, the 70E-24 delivers exceptional selectivity, sensitivity, and stability, making it a favorite among radio enthusiasts, DXers, and vintage radio collectors alike. The receiver s iconic front panel features a classic Collins aesthetic, complete with a large, easy-to-read dial marked with precise frequency markings, allowing operators to tune with surgical precision across a wide spectrum from the lower end of the AM broadcast band up to the upper reaches of the shortwave spectrum. Its tuned oscillator design ensures crystal-clear reception with minimal interference, while the inclusion of a built-in antenna tuner enhances performance across a variety of antenna setups, from simple wire dipoles to more complex multi-band arrangements. The 70E-24 is renowned for its ability to pull in distant signals with remarkable clarity, even under challenging propagation conditions, thanks to its high gain and sharp filtering. Whether used for listening to international broadcasts, amateur radio contacts, or experimental shortwave reception, this receiver offers an unmatched listening experience that bridges the gap between vintage radio craftsmanship and modern expectations of performance. Its enduring reputation as a "workhorse" of the radio community is a testament to its reliability, with many units still in active use after decades of faithful service. For those seeking a blend of historical significance and cutting-edge analog performance, the Collins 70E-24 remains an iconic choice, embodying the golden age of radio engineering with timeless elegance and uncompromising functionality.

The Collins 70E-24 is a classic, high-performance shortwave receiver known for its exceptional build quality and tuning precision. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

1. **Superior Tuning and Selectivity**: The 70E-24 features a tuned oscillator design, which provides excellent selectivity and minimizes interference from strong signals. This makes it ideal for weak-signal reception, including DX (long-distance) communication and amateur radio use.

2. **Rugged and Reliable Construction**: Collins radios are renowned for their durable construction, with high-quality components and solid metal chassis. The 70E-24 is no exception, built to withstand years of heavy use in field conditions.

3. **Wide Frequency Range**: The receiver covers a broad spectrum, from 10 kHz to 30 MHz, making it versatile for shortwave listening, amateur radio, and emergency communications.

4. **High Sensitivity**: The 70E-24 excels at picking up very weak signals, which is crucial for DXing and contest operations where signal strength can vary dramatically.

5. **Adjustable Bandwidth**: The variable bandwidth control allows users to optimize selectivity for different types of signals, whether it s a narrow bandwidth for weak signals or a wider bandwidth for stronger, less selective signals.

6. **Historical and Collectible Value**: For enthusiasts, the 70E-24 holds significant historical value as part of Collins legacy in radio technology. It is also a sought-after collector s item, which can appreciate in value over time.

7. **Field-Proof Design**: The 70E-24 is designed to be rugged and portable, making it suitable for field operations, portable setups, and emergency communications scenarios.

8. **Compatibility with Modern Accessories**: While the radio itself is analog, it can be paired with modern digital signal processing (DSP) software for enhanced performance, such as noise reduction or digital mode decoding.

1. **Age and Obsolescence**: The 70E-24 is an older design, dating back to the mid-20th century. This means that finding replacement parts, especially for critical components like tubes or capacitors, can be challenging and expensive. The radio relies on vacuum tubes, which require periodic replacement and can be less reliable over time.

2. **Maintenance Requirements**: Vacuum tube radios require regular maintenance, including tube replacements, alignment, and cleaning. This can be time-consuming and may require specialized knowledge or tools.

3. **Limited Modern Features**: Unlike modern digital receivers, the 70E-24 lacks features such as built-in DSP, digital tuning displays, or connectivity options like USB or Bluetooth. It also does not support modern digital modes like FT8 or PSK31 without additional external equipment.

4. **Power Consumption**: The 70E-24 draws more power than many modern receivers, which can be a consideration if you re operating from battery-powered setups or in portable situations where power efficiency is important.

5. **Cost of Acquisition and Restoration**: While the 70E-24 can be found for sale, the price can vary widely depending on condition. A fully restored and working unit may be expensive, and restoring a non-functional one can be costly in terms of time and money.

6. **Learning Curve**: Operating a vintage radio like the 70E-24 requires familiarity with analog tuning and tuning techniques, which can be less intuitive for those accustomed to digital receivers with touchscreen interfaces.

7. **Limited Connectivity**: The radio lacks modern connectivity options such as USB or audio outputs that can interface directly with computers or other devices. Additional adapters or interfaces may be needed for modern use cases.

8. **Environmental Sensitivity**: Vacuum tube radios can be sensitive to environmental factors like humidity, temperature fluctuations, and electrical interference, which may affect performance or longevity.

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The Collins 70E-24 is a remarkable piece of radio technology, offering unmatched performance in terms of tuning precision, selectivity, and reliability for shortwave reception. Its historical significance and collectible value make it a prized possession for enthusiasts and ham radio operators who appreciate analog technology. However, its age and reliance on vacuum tubes introduce practical challenges, including maintenance requirements, limited modern features, and the potential difficulty of sourcing replacement parts.

For those who are passionate about vintage radio, enjoy the art of tuning and maintenance, or seek a high-performance analog receiver for specific applications like DXing or emergency communications, the 70E-24 remains an excellent choice. On the other hand, if you prioritize modern convenience, digital features, or low-maintenance operation, a contemporary digital receiver may be a more practical option.

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- You are an enthusiast who appreciates vintage radio technology and is willing to invest time in maintenance and restoration.

- You prioritize analog tuning and selectivity for shortwave listening, DXing, or amateur radio operations.

- You value the historical and collectible aspects of the radio and are prepared for the challenges of owning and operating a tube-based device.

- You plan to use it in a setting where modern features are not critical, such as a dedicated listening station or field operations where analog performance is paramount.

- You seek a low-maintenance, modern receiver with digital features, connectivity options, or ease of use.

- You are unwilling to invest time or money in maintenance, tube replacements, or potential restoration work.

- You require a receiver for contemporary digital modes or applications where analog performance is not a priority.

- You are on a tight budget, as the cost of acquisition, restoration, and maintenance can add up significantly.

For most modern users, a well-regarded digital shortwave receiver like the Icom IC-R8600, the Yaesu FRG-7500, or the Elecraft K3 (for amateur radio) may offer a better balance of performance, features, and ease of use. However, if you are drawn to the unique charm and capabilities of the Collins 70E-24, it remains a fantastic choice for those who cherish analog radio craftsmanship.

Details:

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part #: 70e24 prices

• $35.00-$40.00

specifications hamamateuradio:

• brand: Collins
• mpn: 70e-24
• type: Pto
• color: Silver
• country of origin: United States

payments hamamateuradio:

• other
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• wallet: Google-pay

shipping hamamateuradio:

• cost: $8.00
• transit: 4-8 Days
• service: USPS Priority Mail, UPS Ground Saver
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• type: Fixed
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offer hamamateuradio:

• availability: In Stock
• best offers: True
• sold: 0
• options: Ship-to-home
• started: March 22, 2026
• quantity: 1

returns hamamateuradio:

• time: 30 Days
• paid by: Buyer
• method: Money back
• policy: Returns Accepted

seller hamamateuradio:

• rating: 100.0%
• # reviews: 983
• city: Edmond, Oklahoma

general hamamateuradio:

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

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