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HALLICRAFTERS Coil SX-28A RF2 Coil. T17. P/n 51B574. 164

51b574 Hallicrafters Sx-28a Rf2 Coil. T17. P/n 51b574. Please See Description #164

( Brand: Hallicrafters ), ( Manufacturer Part Number: 51B574 ), ( Type: Rf2 Coil ), ( Compatible Model: Sx-28a ), ( Country Of Origin: United States )

Review HALLICRAFTERS Rf2 Coil. T17. P/n 51b574. Please See #164

The Hallicrafters SX-28A RF2 Coil (T17, Part Number 164) is a meticulously crafted, high-performance accessory designed to elevate the capabilities of the legendary SX-28A shortwave transceiver, a radio beloved by enthusiasts and operators alike for its exceptional versatility and durability. This coil, part of Hallicrafters renowned RF2 series, is engineered to deliver superior selectivity and sensitivity across a broad range of frequencies, making it an indispensable tool for both casual listeners and dedicated DXers. The T17 coil, in particular, is optimized for the lower end of the shortwave spectrum, typically spanning the 1.7 to 17 MHz range, though its precise tuning characteristics can be adjusted to cover adjacent bands with the aid of the SX-28A s built-in tuning controls. Constructed with precision-wound wire and housed in a robust metal casing, this coil ensures minimal signal loss and maximum clarity, allowing operators to tune into distant stations with remarkable precision. Its compact yet sturdy design integrates seamlessly with the SX-28A s coil box, offering a seamless user experience without compromising on performance. Whether you're chasing elusive international broadcasts, experimenting with amateur radio contacts, or simply indulging in the rich tapestry of shortwave listening, the RF2 T17 coil enhances the SX-28A s ability to cut through atmospheric noise and interference, revealing the subtle nuances of distant transmissions. For collectors and operators who appreciate the artistry of vintage radio technology, this coil embodies the blend of engineering ingenuity and craftsmanship that Hallicrafters became synonymous with during its golden era.

The Hallicrafters SX-28A RF2 coil (T17, P/N 164) is a specialized component designed for use with the Hallicrafters SX-28A shortwave transceiver, a classic and highly regarded amateur radio transceiver from the mid-20th century. Below is a detailed analysis of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of buying a Hallicrafters SX-28A RF2 Coil (T17, P/N 164)**

1. **Compatibility and Functionality**

The SX-28A is a well-known shortwave transceiver, and the RF2 coil (T17) is designed specifically for it. This coil is part of the transceiver s tuning system, allowing it to cover a wide range of frequencies with good selectivity and sensitivity. The T17 coil is particularly useful for higher-frequency bands (e.g., 10-16 meters), where it provides efficient performance. Replacing or upgrading coils can extend the usability of the transceiver, especially if the original coils have degraded over time.

2. **Historical and Collectible Value**

The SX-28A is a classic piece of radio equipment, highly sought after by collectors and enthusiasts. Owning or restoring one of these transceivers can be a rewarding hobby, and the T17 coil is a genuine, factory-original part that enhances the authenticity of the restoration. For collectors, original or high-quality replacement parts like this coil can increase the value of the entire setup.

3. **Reliability and Durability**

Hallicrafters was known for building robust, long-lasting radios during its prime (1930s 1960s). The materials and construction of the T17 coil are designed to withstand decades of use, provided they are handled and stored properly. If you are restoring or maintaining an SX-28A, a genuine or high-quality replacement coil ensures that the transceiver will continue to operate reliably for years to come.

4. **Performance on Shortwave Bands**

The SX-28A is renowned for its performance on shortwave bands, and the RF2 coil (T17) is optimized for these frequencies. It provides good image rejection, selectivity, and sensitivity, which are critical for clear communication or weak-signal reception. For amateur radio operators or DXers (long-distance communicators), this coil can be a valuable addition to the transceiver s tuning capabilities.

5. **Ease of Installation**

Replacing a coil in an SX-28A is a relatively straightforward process for someone with basic soldering and radio repair skills. The coil is typically mounted on the tuning dial assembly, and swapping it out involves disconnecting a few wires and reattaching them. This makes it an accessible upgrade for hobbyists who enjoy hands-on restoration work.

6. **Support for Vintage Radio Culture**

Owning and restoring vintage radios like the SX-28A supports the preservation of radio history and technology. The T17 coil is a small but meaningful part of this legacy, and purchasing it contributes to the continuity of this cultural tradition. Many enthusiasts find deep satisfaction in reviving and operating classic equipment.

7. **Potential for Customization**

While the T17 coil is a stock part, some enthusiasts experiment with modifying or tuning coils to achieve slightly different performance characteristics (e.g., broader or narrower bandwidth). This coil could serve as a starting point for such customization, though caution is advised, as improper modifications can damage the transceiver.

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### **Cons of buying a Hallicrafters SX-28A RF2 Coil (T17, P/N 164)**

1. **Age and Potential Wear**

The SX-28A and its components are over 60 years old, and the T17 coil may show signs of wear, such as oxidized terminals, brittle insulation, or degraded performance. If the coil is not in pristine condition, it may require cleaning, re-soldering, or even replacement of internal components (e.g., capacitors or resistors). This adds to the cost and effort of restoring the transceiver.

2. **Limited Availability and Pricing**

Authentic Hallicrafters parts, especially for older models like the SX-28A, can be difficult to find. The T17 coil may only be available from specialized vendors, antique radio shops, or eBay sellers, which can drive up the price. Prices for genuine Hallicrafters parts can be high, sometimes exceeding the value of the transceiver itself, depending on demand and rarity.

3. **Compatibility with Modified or Altered Transceivers**

If the SX-28A has been modified (e.g., with aftermarket coils, filters, or power supplies), the T17 coil may not integrate seamlessly. Some modifications could require additional adjustments or even new coils to work properly. This means that purchasing the coil may not immediately solve all performance issues in an altered transceiver.

4. **Risk of Counterfeit or Low-Quality Parts**

Due to the high demand for Hallicrafters parts, there is a risk of purchasing counterfeit or poorly made replicas. These parts may not function as intended, leading to further issues with the transceiver. It is crucial to source the coil from a reputable seller with a track record of authenticity, such as established vintage radio dealers or trusted online forums.

5. **Technical Knowledge Required**

Working with vintage radio equipment like the SX-28A requires a certain level of technical skill. Replacing a coil involves understanding the transceiver s electrical layout, soldering, and potentially recalibrating the tuning system. Beginners may find the process challenging, and mistakes could lead to damage. This may necessitate consulting manuals, forums, or experienced hobbyists for guidance.

6. **Maintenance and Long-Term Care**

Even with a new or restored coil, the SX-28A will require ongoing maintenance to keep it in working order. This includes cleaning contacts, checking for corrosion, and ensuring that all components are properly connected. Neglecting maintenance can lead to gradual degradation of performance, requiring future repairs or part replacements.

7. **Power Supply and Environmental Considerations**

The SX-28A is a tube-based radio, which means it requires a stable power supply (often a high-voltage transformer and power tubes). Operating the transceiver in environments with high humidity, dust, or temperature fluctuations can accelerate wear on the coil and other components. Proper storage and operation conditions are essential to prolong the life of the coil and the transceiver.

8. **Limited Modern Support**

Unlike modern radios, the SX-28A lacks built-in diagnostics, user manuals, or widespread technical support. Troubleshooting issues with the coil or the transceiver may require extensive research, experimentation, or reliance on community knowledge (e.g., forums like *Vintage Radio Forum* or *Amateur Radio forums*). This can be frustrating for those expecting modern convenience.

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### **Conclusion**

The Hallicrafters SX-28A RF2 coil (T17, P/N 164) is a valuable and historically significant component for enthusiasts of vintage shortwave transceivers. It offers compatibility, reliability, and performance benefits that are hard to replicate with modern parts. However, its age, limited availability, and the technical challenges of working with it present significant drawbacks. The decision to purchase this coil depends largely on your goals: whether you are restoring a collector s item, pursuing a hobby in vintage radio technology, or seeking a unique listening experience.

For collectors or those deeply invested in the world of classic radios, the coil is a worthwhile investment, provided you are prepared for the challenges of sourcing, installing, and maintaining it. For casual users or those seeking a straightforward radio experience, the effort and cost may not be justified, especially if modern alternatives (e.g., software-defined radios) are more practical.

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### **Recommendation**

1. **If you are a collector or enthusiast:**

Purchase the T17 coil if you are restoring an SX-28A and have the technical skills or access to guidance for installation. Prioritize sourcing it from a reputable seller to ensure authenticity. Be prepared for the possibility of additional repairs or adjustments during the restoration process. Consider joining vintage radio communities for support and advice.

2. **If you are a beginner or casual user:**

Evaluate whether the SX-28A aligns with your interests and technical capabilities. If you are new to vintage radio restoration, start with simpler projects or modern alternatives before committing to a high-effort, high-cost endeavor like the SX-28A. Alternatively, consider purchasing a fully restored SX-28A from a trusted seller to avoid the hassle of DIY repairs.

3. **If you are evaluating performance needs:**

Assess whether the specific benefits of the T17 coil (e.g., higher-band performance) are critical to your use case. If your primary goal is general shortwave listening or communication, you may find that modern transceivers or aftermarket coils offer comparable performance with less hassle.

4. **Budget Considerations:**

Research the cost of the coil and weigh it against the overall value of the SX-28A. In some cases, the price of the coil may approach or exceed the value of the transceiver itself, making it a less attractive purchase unless you are a dedicated collector.

Ultimately, the Hallicrafters SX-28A RF2 coil is a gem for those who appreciate vintage technology and are willing to invest time and effort into its care. For others, the challenges may outwe

Details:

I'll be glad to clarify. The opportunity for making mistakes here is huge. Please see below. Its all about restoring/building/fixing the radio and has nothing at to do with selling parts.

part #: 51b574 price

  • $10.00

specifications radiparaccessori:

  • brand: Hallicrafters
  • mpn: 51b574
  • type: Rf2 Coil
  • compatible model: Sx-28a
  • country of origin: United States

general radiparaccessori:

  • condition: Used
  • Radio Communication > Parts Accessories > Other Radio Communication Accs

returns radiparaccessori:

  • policy: No Returns

payments radiparaccessori:

  • other
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  • credit card: Visa

shipping radiparaccessori:

  • class: Standard
  • carrier: USPS
  • cost: $7.50
  • service: USPS Ground Advantage
  • type: Fixed
  • transit: 3-8 Days

offer radiparaccessori:

  • quantity: 1
  • options: Ship-to-home
  • sold: 0
  • availability: In Stock
  • started: March 18, 2026

seller radiparaccessori:

  • city: Zephyrhills, Florida
  • # reviews: 1158
  • rating: 100.0%
type: rf2 coil, compatible model: sx-28a, country of origin: united states,
category: electronics > radio communication > radio communication accs, sku: 8429025084928603,
Hallicrafters 51B574 Is Similar To:
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5 offers $10.00–$10.00 USD
  • Used. Offer #1 priced at $10.00 + $7.90 shipping estimate = $17.90* total. Hallicrafters square coil for RF 2 section.+$7.90 shipping
  • Used. Offer #2 priced at $10.00 + $7.90 shipping estimate = $17.90* total. +$7.90 shipping
  • Used. Offer #3 priced at $10.00 + $7.90 shipping estimate = $17.90* total. +$7.90 shipping
  • Used. Offer #4 priced at $10.00 + $7.90 shipping estimate = $17.90* total. +$7.90 shipping
  • Used. Offer #5 priced at $10.00 + $7.90 shipping estimate = $17.90* total. +$7.90 shipping

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