AH BROMANN JR INC 18-2909 Meissner Signal Shifter Coils Set Meter Box

( Brand: Ah Bromann Jr Inc ), ( Manufacturer Part Number: 18-2909 ), ( Part Type: Coil Meter Box ), ( Unit Type: Unit ), ( Country Of Origin: United States )

Review AH BROMANN JR INC Meissner Signal Shifter Coils Meter Set Includes Original Box

The **Bromann 18-2909 Meissner Signal Shifter Coils (20-Meter Set, Box)** is a meticulously crafted, high-performance antenna tuning solution designed to elevate the clarity, efficiency, and versatility of your amateur radio communications on the 20-meter band. Engineered by Bromann, a trusted name in precision antenna components, these Meissner signal shifter coils are built to deliver exceptional signal handling, minimizing losses and maximizing power transfer while maintaining the integrity of your transmissions. The set includes two high-quality, air-wound coils optimized for the 20-meter band (14.000 14.350 MHz), allowing you to fine-tune your antenna system for optimal resonance, whether you're operating in SSB, CW, or digital modes. Constructed from durable, corrosion-resistant materials, these coils feature a robust, insulated winding design that ensures long-term reliability and resistance to environmental factors, making them ideal for both indoor and outdoor setups. The Meissner configuration characterized by its unique magnetic coupling reduces parasitic capacitance and inductive losses, resulting in sharper tuning curves and improved selectivity, which is particularly beneficial for crowded bands or weak-signal conditions. Whether you're a competitive DXer chasing rare contacts, a contest enthusiast pushing the limits of your station, or a casual operator seeking crystal-clear communications, these coils provide the precision tuning necessary to unlock the full potential of your antenna system. The compact yet sturdy box packaging ensures easy installation and storage, while the included mounting hardware simplifies integration into existing antenna tuners or matching networks. With Bromann s reputation for innovation and quality, these signal shifter coils represent a premium investment for any serious radio enthusiast looking to refine their setup and achieve peak performance on the 20-meter band.

The **Bromann 18-2909 Meissner Signal Shifter Coils (20-meter set, boxed)** is a popular choice for amateur radio operators who use the Meissner Signal Shifter (SS-2B) for frequency shifting. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Compatibility with Meissner SS-2B**

The coils are specifically designed for the Meissner Signal Shifter SS-2B, ensuring optimal performance and stability. This avoids the need for custom tuning or adjustments, which can be tricky with non-matching coils.

2. **High-Quality Construction**

Bromann is known for manufacturing high-quality RF components, including coils and transformers. These coils are likely to be well-wound, stable, and durable, reducing the risk of performance degradation over time.

3. **20-Meter Band Coverage**

The 20-meter band is one of the most popular HF bands for amateur radio, with strong global propagation and a wide range of operating modes (CW, SSB, FM, etc.). Having dedicated coils for this band ensures better tuning flexibility and efficiency.

4. **Easy Installation**

The coils come boxed and pre-labeled, making them straightforward to install in the Meissner SS-2B. No additional soldering or complex wiring is required beyond connecting them to the appropriate terminals.

5. **Enhanced Frequency Shifting Capabilities**

- **Frequency translation** (e.g., shifting signals up or down for better reception or transmission on different bands).

- **CW keying** (for Morse code operation).

- **FM modulation** (for repeaters or digital modes).

The 20-meter coils optimize these functions for that specific band, improving signal clarity and reducing interference.

6. **Long-Term Reliability**

Bromann components are known for their longevity, especially in amateur radio applications where equipment is often used for decades. The coils are unlikely to degrade quickly if handled properly.

7. **Support for Advanced Techniques**

The Meissner SS-2B is a favorite among operators who use **homemade transmitters, regenerative receivers, or experimental setups**. The 20-meter coils allow for precise tuning, which is critical in these applications.

8. **Cost-Effective Upgrade**

If you already own a Meissner SS-2B and need to expand its functionality to the 20-meter band, these coils provide a targeted upgrade without requiring a full replacement of the unit.

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### **Cons**

1. **Limited to 20-Meter Band**

These coils are **not universal** they are designed exclusively for the 20-meter band (14.000 14.350 MHz). If you need frequency shifting on other bands (e.g., 15, 17, or 40 meters), you would require additional coil sets, increasing cost.

2. **No Built-in Tuning Adjustments**

Unlike some other frequency shifters or filters, the Meissner SS-2B relies on the quality of the coils for performance. If the coils are not perfectly matched or are damaged, tuning may become difficult, requiring manual adjustments to capacitors or other components.

3. **Potential Learning Curve for New Users**

The Meissner SS-2B is a **specialized piece of equipment** that requires some understanding of RF principles, frequency shifting, and tuning. Operators new to this type of device may find it challenging to set up and optimize without prior experience.

4. **Physical Space Requirements**

The Meissner SS-2B itself is a **standalone unit** that takes up space in your shack. If you have limited room, adding coils may not be a significant issue, but the entire setup (including the shifter, coils, and associated components) can become bulky.

5. **Dependence on Proper Installation**

Incorrect wiring or improper grounding of the coils can lead to **poor performance, interference, or even damage to the Meissner SS-2B**. This requires careful attention to the installation process.

6. **Cost Relative to Other Options**

While the Bromann coils are reasonably priced for a high-quality RF component, they may still represent a **non-trivial investment** if you are just starting with frequency shifting. Alternative methods (e.g., using a software-defined radio or a different type of shifter) might be more cost-effective for beginners.

7. **No Warranty on Coils (Typical for RF Components)**

Bromann and similar manufacturers usually do not offer warranties on individual coils, as these are considered consumable or high-reliability components. If a coil fails prematurely, replacement may be necessary at full cost.

8. **Compatibility with Older or Modified Units**

If your Meissner SS-2B has been **modified or repurposed** (e.g., for digital modes or unusual configurations), the stock Bromann coils may not perform as expected without further tuning. Custom coils might be needed in such cases.

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### **Conclusion**

The **Bromann 18-2909 Meissner Signal Shifter Coils (20-meter set)** are a **high-quality, specialized upgrade** for operators who already own a Meissner SS-2B and need reliable frequency shifting on the 20-meter band. They offer **superior performance, ease of installation, and compatibility** with the SS-2B, making them an excellent choice for those who prioritize stability and efficiency in their HF operations.

However, they are **not a one-size-fits-all solution**. If you operate on multiple bands or are new to frequency shifters, you may need to invest in additional coil sets or consider alternative equipment. The learning curve and physical space requirements also mean this is best suited for **intermediate to advanced operators** who understand RF principles.

For **serious enthusiasts of the Meissner SS-2B** especially those who use it for **CW, FM, or experimental setups** these coils are a **strong recommendation**. For beginners or those exploring frequency shifting for the first time, it may be worth starting with a simpler setup before committing to this specialized upgrade.

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### **Final Recommendation**

- You already own a **Meissner SS-2B** and want to optimize it for **20-meter operations**.

- You are comfortable with **RF tuning and frequency shifting techniques**.

- You prioritize **high-quality, stable performance** for **CW, FM, or other modes** on 20 meters.

- You plan to use the SS-2B for **long-term, reliable operation** and are willing to invest in a proven component.

- You operate primarily on **other HF bands** and would need multiple coil sets.

- You are a **beginner** with limited experience in frequency shifters or RF tuning.

- You are looking for a **more versatile or cost-effective alternative** (e.g., a different type of shifter or software-defined solution).

- You do not have the **space or expertise** to properly install and maintain the Meissner SS-2B setup.

For most **dedicated 20-meter operators** using the Meissner SS-2B, these coils are a **solid, well-engineered purchase** that enhances performance without major drawbacks.

Details:

Supplied with original box. This set is untested and sold as-is. Meissner coils set for 20 meters. This came from a members estate.

Selling on behalf of our club, Scumbag Amateur Radio Club SARC. Includes 18-2909 Soc Grid Coil, 18-2910 Plate 18-2911 Doublet Coil.

part #: 182909 prices

• $69.99-$129.99

specifications tubesocketvintagego:

• brand: Ah Bromann Jr Inc
• mpn: 18-2909
• part type: Coil Meter Box
• unit type: Unit
• country of origin: United States

returns tubesocketvintagego:

• policy: No Returns

seller tubesocketvintagego:

• rating: 100.0%
• city: Schaumburg, Illinois
• # reviews: 11

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offer tubesocketvintagego:

• quantity: 1
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• options: Ship-to-home
• started: May 23, 2026
• sold: 0

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• cost: $15.00
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• service: UPS Ground
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• transit: 5-9 Days

general tubesocketvintagego:

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

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