SAWNICS SD455AK2 Duplexer Rx 4pcs 455MHZ 465MHZ

( Brand: Sawnics ), ( Manufacturer Part Number: SD455AK2 ), ( Type: Connector )

Review SAWNICS 4pcs Duplexer 455mhz Tx 465mhz Rx

The **Sawnics SD455AK2 4-Piece Duplexer Set (455 MHz / 465 MHz RX)** is a high-performance, precision-engineered solution designed for demanding two-way radio and amateur radio applications requiring reliable frequency separation between transmit and receive signals. This compact yet robust duplexer set is meticulously crafted to ensure seamless operation in environments where interference mitigation is critical, such as emergency communications, public safety, or professional mobile radio systems. Each duplexer in the set is built with high-quality, low-loss materials, including specialized ferrite cores and precision-wound inductors, which work in tandem to provide exceptional isolation between the transmit (TX) and receive (RX) paths at the designated frequencies of 455 MHz and 465 MHz. The duplexer s dual-band design allows for efficient handling of both the transmit signal (455 MHz) and the receive signal (465 MHz), ensuring minimal cross-talk and optimal signal integrity. The robust construction, featuring a durable metal enclosure and secure mounting points, guarantees long-term reliability even under harsh operating conditions, such as exposure to temperature fluctuations or mechanical stress. Whether integrated into a mobile base station, repeater system, or portable setup, this duplexer set delivers consistent performance, making it an indispensable component for professionals and enthusiasts who demand precision and dependability in their radio communications. Its compact form factor and easy installation further enhance its versatility, allowing for seamless integration into existing setups without compromising on functionality or space efficiency.

**Pros and Cons of buying a Sawnics SD455AK2 (4-Piece Duplexer for 455 MHz/465 MHz RX)**

### **Pros**

1. **Frequency Coverage and Compatibility**

The SD455AK2 is designed specifically for the 455 MHz/465 MHz duplexer range, making it ideal for applications in public safety, amateur radio, or commercial two-way radio systems operating in these bands. It ensures proper isolation between transmit and receive paths, reducing interference and improving signal clarity.

2. **Durability and Build Quality**

Sawnics is a well-known brand in RF and microwave components, known for producing reliable and high-quality duplexers. The SD455AK2 is likely constructed with materials and shielding that minimize signal loss and external interference, ensuring long-term performance.

3. **Modular and Scalable Design**

The duplexer comes in a 4-piece set, which allows for flexibility in system design. You can use individual units for different channels or combine them as needed. This modularity is useful for expanding or modifying a radio system without replacing the entire setup.

4. **Low Insertion Loss and High Isolation**

Duplexers are critical for maintaining signal integrity in full-duplex communication systems. The SD455AK2 is likely designed to provide minimal signal attenuation (low insertion loss) while ensuring strong isolation between the transmit and receive paths (high isolation), which is essential for preventing TX signals from bleeding into the RX path.

5. **Compatibility with Common Radio Systems**

If you are working with radios or base stations that operate in the 455/465 MHz range (such as some amateur radio repeaters, public safety radios, or commercial two-way radios), this duplexer will integrate seamlessly. It is a standard component in many RF setups, making sourcing additional parts or replacements easier.

6. **Cost-Effective for Bulk Purchase**

Buying a 4-piece set may offer a slight discount compared to purchasing individual units, making it a cost-effective option if you need multiple duplexers for redundancy, testing, or expansion.

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### **Cons**

1. **Limited Frequency Range**

The SD455AK2 is strictly for 455 MHz/465 MHz applications. If your project requires operation in other frequency bands (e.g., 2 meters, 70 cm, or VHF/UHF ranges), this duplexer will not be compatible. Ensure your application aligns perfectly with its specified frequencies to avoid wasted investment.

2. **Potential Compatibility Issues with Non-Standard Connections**

Duplexers often come with specific connector types (e.g., SMA, N-type, or BNC). If your system uses non-standard or proprietary connectors, you may need additional adapters, which could add cost and complexity. Verify the connector types before purchasing to avoid compatibility problems.

3. **No Built-in Filtering for Harmonics or Spurious Signals**

While the duplexer provides isolation between TX and RX, it does not inherently filter out harmonics, spurious emissions, or out-of-band signals. If your application requires strict regulatory compliance (e.g., FCC or ITU regulations), you may need additional filters or a more comprehensive RF front-end design.

4. **Potential for Signal Degradation in High-Power Applications**

If you are operating at high power levels (e.g., 100W or higher), the duplexer may experience increased heat or signal degradation over time. Ensure that your system includes adequate cooling and that the duplexer s power rating matches your application s requirements. Sawnics products are generally robust, but extreme conditions could still pose challenges.

5. **Dependence on Proper Installation and Grounding**

Duplexers are sensitive to proper installation, shielding, and grounding. Poor installation can lead to signal leakage, interference, or reduced performance. If you lack experience with RF systems, you may need to consult an expert or invest in additional training to install it correctly.

6. **Potential for Obsolescence**

RF technology evolves rapidly, and while Sawnics is a reputable brand, newer duplexers may offer improved performance (e.g., wider bandwidth, lower loss, or better isolation). If you plan to use this duplexer for long-term projects, research whether alternatives with better specifications are available.

7. **No Warranty or Support Information Provided**

Without explicit warranty details or customer support information from the seller, you may face challenges if the duplexer fails or requires servicing. Always check the seller s return policy and warranty terms before purchasing.

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### **Ending Conclusion**

The **Sawnics SD455AK2 4-Piece Duplexer for 455 MHz/465 MHz RX** is a solid choice for applications requiring reliable duplexing in this specific frequency range. Its modular design, compatibility with common RF systems, and reputable brand backing make it a practical option for hobbyists, amateur radio operators, and professionals working in public safety or commercial two-way radio environments. However, its narrow frequency range and potential need for additional components (like filters or adapters) are limitations to consider.

If your project strictly requires 455/465 MHz duplexing and you have verified compatibility with your system s connectors and power levels, this duplexer is a worthwhile investment. For broader frequency applications or high-power setups, you may need to supplement it with additional RF components or explore alternative duplexers with expanded specifications.

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### **Recommendation**

- Your application **exclusively** operates in the 455 MHz/465 MHz range.

- You need **multiple duplexers** for redundancy, testing, or expansion, and the 4-piece set offers cost savings.

- You are working with a **well-shielded and properly grounded** RF system where signal integrity is critical.

- You trust Sawnics reliability and are comfortable with its build quality.

- Your project requires **other frequency bands** (e.g., 144 MHz, 433 MHz, or higher UHF bands).

- Your system uses **non-standard connectors**, which may require expensive adapters.

- You are operating at **extremely high power levels** (e.g., 100W ) without verifying the duplexer s power handling capabilities.

- You need **additional filtering** for harmonics or spurious signals, as the duplexer alone may not suffice.

- You prefer **long-term flexibility** and want to explore duplexers with wider bandwidth or lower insertion loss.

- Check the **specifications sheet** from Sawnics or the seller for exact insertion loss, isolation values, and power ratings to ensure they meet your needs.

- If possible, **test or consult with an RF expert** before committing, especially if you are new to duplexer-based systems.

- Consider purchasing from a **reputable seller** with good return policies in case of defects or compatibility issues.

Details:

FCC Location.

part #: sd455ak2 prices

• $14.00-$45.00

specifications coaxcabl:

• brand: Sawnics
• mpn: Sd455ak2
• type: Connector

general coaxcabl:

• Radio Communication > Parts Accessories > Coax Cables Connectors
• condition: New

returns coaxcabl:

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

offer coaxcabl:

• quantity: 3
• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: February 4, 2026

shipping coaxcabl:

• type: Fixed
• cost: $0.00
• transit: 3-7 Days
• service: USPS Ground Advantage
• class: Standard
• carrier: USPS

seller coaxcabl:

• # reviews: 6478
• city: Irvine, California
• rating: 99.8%

payments coaxcabl:

• other
• credit card: Diners-club
• wallet: Apple-pay

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