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HALLICRAFTERS Mixer Coil SX-28 Coil. T19. P/n 51284. 107

51284 Hallicrafters Sx-28 Mixer Coil. T19. P/n 51284. Please See Description #107

( Brand: Hallicrafters ), ( Manufacturer Part Number: 51284 ), ( Type: Mixer Coil ), ( Compatible Model: Sx-28 )

Review HALLICRAFTERS Mixer Coil. T19. P/n Please See #107

The Hallicrafters SX-28 Mixer Coil, identified by its model number **51284** and part number **107 (T19)**, is a meticulously crafted component designed to elevate the performance of vintage and modern shortwave radio receivers, particularly those built around the legendary SX-28 chassis. This coil is a specialized **mixer coil**, a critical element in superheterodyne radio designs that facilitates the conversion of incoming high-frequency signals into intermediate frequencies (IF) for amplification and demodulation. Engineered with precision, the SX-28 Mixer Coil features a **toroidal (T19) core**, a design choice that minimizes electromagnetic interference (EMI) and maximizes signal integrity, making it ideal for applications where clarity and selectivity are paramount. The coil s windings are meticulously arranged to optimize impedance matching and bandwidth, ensuring efficient mixing of the incoming RF signal with the local oscillator s output to produce a stable IF signal. Whether integrated into a classic Hallicrafters SX-28 receiver or adapted into a custom-built shortwave rig, this coil delivers exceptional performance across a broad spectrum of frequencies, from the lower end of the shortwave bands up to the upper limits of the HF range. Its robust construction and high-quality materials contribute to long-term reliability, making it a sought-after upgrade for enthusiasts and hobbyists looking to refine their listening experience. The SX-28 Mixer Coil is not merely a replacement part but a testament to Hallicrafters engineering heritage, offering a blend of historical craftsmanship and modern functionality for those who demand nothing less than excellence in their radio setups.

The Hallicrafters SX-28 mixer coil (part number 107, T19) is a specialized component used in amateur radio setups, particularly for those operating in the HF (High Frequency) bands. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of buying a Hallicrafters SX-28 Mixer Coil (PN 107, T19)**

1. **Compatibility with Classic Hallicrafters Transceivers**

The SX-28 was originally designed for use with Hallicrafters HF transceivers, such as the SX-100, SX-120, and SX-130. If you own or plan to restore one of these radios, this coil is a direct replacement part, ensuring proper functionality without modification. Many vintage radios rely on specific coil configurations for optimal performance, and using the correct part preserves the intended design.

2. **Authentic Performance Characteristics**

The original Hallicrafters radios were known for their robust and reliable performance, particularly in terms of selectivity and sensitivity. The SX-28 s mixer coil contributes to the radio s ability to handle strong signals without overloading and to provide clear reception in crowded bands. Using the genuine part ensures that the radio operates as it was originally intended, with proper tuning and signal mixing.

3. **Durability and Longevity**

Hallicrafters components from the mid-20th century were built to last, with high-quality materials and construction. The mixer coil, in particular, is designed to withstand the thermal and mechanical stresses of regular use. If well-maintained, it can provide decades of service, making it a cost-effective investment for long-term enthusiasts.

4. **Collectibility and Nostalgia**

For collectors or hobbyists who appreciate vintage radio technology, owning and restoring a Hallicrafters transceiver with original or authentic parts adds sentimental value. The SX-28 mixer coil is a small but meaningful piece of radio history, and its inclusion in a restored set enhances the overall experience for enthusiasts who value authenticity.

5. **Ease of Installation**

Replacing a mixer coil in a Hallicrafters radio is generally a straightforward process, especially if you have basic soldering skills and access to the radio s schematics. The coil is typically located in the tuner section, and swapping it out involves minimal disassembly. This makes it an accessible upgrade or repair option for DIYers.

6. **Support for Narrowband and Selectivity**

The SX-28 s coil design contributes to the radio s selectivity, which is crucial for separating closely spaced signals in crowded bands like 20 meters or 15 meters. This can be particularly valuable for contesting or operating in areas with high signal density.

7. **Availability of Supporting Documentation**

Hallicrafters radios are well-documented, and schematics, service manuals, and part lists are often available online or through ham radio clubs. This makes troubleshooting and installation easier compared to less-documented vintage radios.

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### **Cons of buying a Hallicrafters SX-28 Mixer Coil (PN 107, T19)**

1. **Limited Modern Compatibility**

While the coil works perfectly with Hallicrafters radios, it is not universally compatible with modern or non-Hallicrafters transceivers. Attempting to use it in a different radio may require significant modifications or may not work at all. This limits its usefulness to those specifically targeting Hallicrafters equipment.

2. **Age-Related Wear and Potential Issues**

As a vintage component, the coil may exhibit signs of wear, such as oxidized terminals, brittle insulation, or degraded windings. Even if the coil appears functional, it may require cleaning or re-soldering to ensure reliable connections. Purchasing from a reputable seller who provides testing or inspection can mitigate this risk, but it s not guaranteed.

3. **Cost Relative to Modern Alternatives**

The SX-28 mixer coil is not inexpensive, especially if sourced from a trusted seller or restored to like-new condition. For modern radios or more contemporary builds, there are often cheaper or more readily available alternatives (e.g., commercial tuner modules or DIY coils). For some enthusiasts, the cost may not justify the purchase unless they are deeply invested in vintage equipment.

4. **Dependence on Vintage Radio Ecosystem**

Owning a Hallicrafters radio with original parts ties you into a niche community. If you re not already part of the vintage radio restoration scene, you may struggle to find parts, tools, or knowledgeable peers to assist with repairs or upgrades. This can be isolating compared to the broader ham radio community, which is more focused on modern equipment.

5. **Potential for Counterfeit or Mismatched Parts**

The vintage radio market is not without its pitfalls. There is a risk of purchasing a counterfeit or incorrectly labeled coil that may not fit or function as intended. Always verify the part number, origin, and condition before purchasing, and consider buying from sellers with a proven track record in authenticating vintage components.

6. **Maintenance Requirements**

Vintage components, including mixer coils, may require periodic maintenance to ensure optimal performance. This could involve cleaning contacts, checking for loose windings, or replacing degraded capacitors in the surrounding circuitry. This adds to the ongoing cost and effort of maintaining the radio.

7. **Limited Customization**

Unlike modern radios, which often allow for extensive customization (e.g., software-defined radio upgrades, digital signal processing), the SX-28 coil is a fixed component. You cannot easily adjust its characteristics to suit modern operating preferences or bandwidth requirements. This lack of flexibility may be a drawback for those seeking adaptability.

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### **Conclusion**

The Hallicrafters SX-28 mixer coil (PN 107, T19) is a highly specialized and valuable component for enthusiasts of vintage Hallicrafters HF transceivers. Its primary strengths lie in its authenticity, compatibility with classic radios, and the performance benefits it provides in terms of selectivity and reliability. For collectors, restorers, or operators who prioritize historical accuracy and the unique characteristics of mid-20th-century radio design, this coil is an excellent investment.

However, the coil s limitations such as its narrow compatibility, potential age-related issues, and the need for ongoing maintenance make it less suitable for casual users or those primarily interested in modern ham radio technology. Additionally, the cost and the niche nature of the component may not align with the needs of everyone in the ham radio community.

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### **Recommendation**

**Buy the Hallicrafters SX-28 mixer coil if:**

- You own or are restoring a Hallicrafters SX-100, SX-120, SX-130, or similar transceiver and need a direct replacement part.

- You appreciate vintage radio technology and value authenticity in your equipment.

- You are prepared to invest time in maintenance and are part of or willing to engage with the vintage radio restoration community.

- You prioritize the specific performance characteristics (e.g., selectivity, robustness) that the coil provides in its original context.

**Avoid purchasing the coil if:**

- You are not committed to using it in a Hallicrafters radio or do not have one to pair with it.

- You are looking for a cost-effective or easily replaceable component in a modern setup.

- You lack the skills or interest in maintaining vintage electronics.

- You prefer radios with greater customization or modern features that are not possible with this coil.

For most modern ham radio operators, the SX-28 mixer coil is not a practical or necessary purchase. However, for those deeply connected to the legacy of Hallicrafters radios, it remains a prized and functional part of restoring or preserving these iconic pieces of radio history. If you decide to proceed, ensure you source the coil from a reputable seller and verify its authenticity and condition before installation.

Details:

Hallicrafters SX-28 not A version round coil for oscillator section. Please see below. Its all about restoring/building/fixing the radio and has nothing at to do with selling parts.

part #: 51284 price

  • $10.00

specifications radiparaccessori:

  • brand: Hallicrafters
  • mpn: 51284
  • type: Mixer Coil
  • compatible model: Sx-28

payments radiparaccessori:

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  • credit card: Visa

shipping radiparaccessori:

  • type: Fixed
  • service: USPS Ground Advantage
  • class: Standard
  • transit: 3-8 Days
  • cost: $0.00
  • carrier: USPS

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  • policy: No Returns

offer radiparaccessori:

  • sold: 0
  • options: Ship-to-home
  • availability: In Stock
  • started: February 17, 2026
  • quantity: 1

seller radiparaccessori:

  • city: Zephyrhills, Florida
  • # reviews: 1140
  • rating: 100.0%

general radiparaccessori:

  • Radio Communication > Parts Accessories > Other Radio Communication Accs
  • condition: Used
type: mixer coil, compatible model: sx-28,
category: electronics > radio communication > radio communication accs, sku: 8384264516577603,
Hallicrafters 51284 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 (not A version) round coil for mixer section.+$7.90 shipping
  • Used. Offer #2 priced at $10.00 + $7.90 shipping estimate = $17.90* total. Hallicrafters (not A version) round coil for the mixer section.+$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 + $7.50 shipping estimate = $17.50* total. +$7.50 shipping

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