MOTOROLA TLN8476A Vhf Diplexer Duplexer Rf Filter Diplexer/

( Brand: Motorola ), ( Manufacturer Part Number: TLN8476A ), ( Type: Vhf Diplexer/duplexer ), ( Unit Type: Unit ), ( Band: Vhf )

Review MOTOROLA Vintage Vhf Diplexer/ Duplexer Specialized Rf Filter

The **Motorola TLEN8476A VHF Diplexer/Duplexer RF Filter** is a high-performance, ruggedized RF component meticulously engineered to facilitate seamless frequency separation and signal routing in demanding two-way radio and communication systems. Designed for reliability in harsh environments, this diplexer operates within the VHF (Very High Frequency) spectrum, specifically optimized for applications requiring precise isolation between transmit and receive paths while minimizing signal loss and interference. Constructed with premium materials and advanced manufacturing techniques, the TLEN8476A ensures exceptional durability, making it ideal for deployment in mobile, portable, or fixed installations where environmental factors such as temperature fluctuations, vibration, and humidity pose challenges. Its compact yet robust design allows for easy integration into existing RF systems, whether in base stations, repeaters, or vehicle-mounted communication setups. The diplexer employs a dual-band architecture, effectively splitting or combining signals between two distinct frequency ranges typically around 136 174 MHz and 450 470 MHz while maintaining low insertion loss and high isolation to prevent signal bleed-through. This ensures that transmit signals are efficiently directed to their intended antennas without degrading the clarity or strength of the receive signals. With a focus on performance and longevity, the TLEN84476A is built to withstand continuous operation under heavy loads, offering a mean time between failures (MTBF) that aligns with the demanding standards of professional and public safety communications. Whether used in land mobile radio networks, emergency response systems, or commercial infrastructure, this diplexer delivers the critical performance needed to maintain clear, uninterrupted communication in even the most challenging operational environments.

### **Pros and Cons of buying a Motorola TLE8476A VHF Diplexer/Duplexer/RF Filter**

#### **Pros**

1. **Compatibility with Motorola Radios** Designed specifically for Motorola (now Zebra) VHF radios, ensuring seamless integration with systems like the TLE8476 series, TLE8476A, or similar models. This reduces the risk of signal interference or performance issues.

2. **High-Quality RF Performance** Built to handle VHF frequencies efficiently, with low insertion loss and high isolation between transmit and receive paths. This ensures clear communication with minimal signal degradation.

3. **Durable Construction** Motorola components are generally built to withstand harsh environments, including temperature fluctuations, humidity, and mechanical stress, making it suitable for industrial, public safety, or field deployments.

4. **Reliability and Longevity** Motorola s reputation for durability means this diplexer is likely to last for years with proper maintenance, reducing the need for frequent replacements.

5. **Easy Installation** Designed with standard connectors (likely SMA or UFL, depending on the model), making it straightforward to integrate into existing radio systems without complex modifications.

6. **Support for Dual-Band or Multi-Channel Systems** If used in a setup requiring simultaneous transmission and reception on different frequencies (e.g., talk-and-listen applications), it helps prevent signal interference by separating TX and RX paths.

7. **OEM or Aftermarket Availability** While primarily an OEM part, it may also be available through authorized distributors or aftermarket suppliers, offering flexibility in sourcing.

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#### **Cons**

1. **Limited Availability and Lead Times** As an older or specialized component, it may not be readily available from all suppliers. Stock levels could be low, leading to delays in procurement.

2. **Potential Obsolescence** Motorola has phased out some older models in favor of newer technologies (e.g., digital radios, LTE-based solutions). This part may become harder to source or replace as systems evolve.

3. **Cost Compared to Alternatives** Purchasing directly from Motorola or authorized dealers may be more expensive than generic or third-party diplexers, which could offer similar performance at a lower price.

4. **Compatibility Risks with Non-Motorola Systems** If used outside of Motorola radios (e.g., with other brands), there is a risk of mismatched impedance, connector types, or frequency responses, potentially degrading performance.

5. **Maintenance and Repairs** Since it s a specialized part, repairs or replacements may require Motorola-certified technicians, increasing maintenance costs.

6. **Weight and Size Constraints** Depending on the application, the physical dimensions of the diplexer may not be ideal for compact or space-sensitive installations.

7. **No Warranty on Aftermarket Purchases** If bought from a non-authorized source, the lack of warranty support could be a drawback if the unit fails prematurely.

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### **Conclusion**

The **Motorola TLE8476A VHF Diplexer/Duplexer/RF Filter** is a robust, high-performance component ideal for Motorola-compatible radio systems where reliability and signal integrity are critical. Its strengths lie in its compatibility, durability, and RF efficiency, making it a sound choice for applications like public safety, industrial communications, or field operations where Motorola radios are deployed.

However, its limitations such as potential obsolescence, limited availability, and higher cost compared to generic alternatives must be weighed against the need for a proven, long-lasting solution. If the primary goal is to maintain compatibility with existing Motorola infrastructure and ensure minimal signal interference, this diplexer is a strong recommendation. For cost-sensitive or non-Motorola applications, evaluating alternative brands or models may be more practical.

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### **Recommendation**

- You are maintaining or upgrading a Motorola radio system (e.g., TLE8476 series) and need a reliable diplexer for VHF frequencies.

- Signal purity and low interference are critical for your application.

- You prioritize long-term reliability and can justify the cost.

- You are open to third-party or generic diplexers that may offer similar performance at a lower cost.

- Your system is not Motorola-specific, and compatibility risks are a concern.

- You anticipate future upgrades to newer radio technologies, making long-term availability a concern.

For best results, verify the exact model number (TLE8476A vs. TLE8476) and connector types before purchasing, and source from authorized Motorola distributors or reputable aftermarket suppliers to ensure authenticity and support.

Details:

Technical Details Frequency Range: The stamps on the chassis indicate this was tuned for Marine VHF band. Its a specialized RF filter used in radio base stations or repeaters to allow single antenna handle both transmitting and receiving simultaneously without the high-power transmit signal blowing out sensitive receiver. This item has not been tested. RX Receive: 157.200 157.400 MHz TX Transmit: 161.800 162.000 Components: The six black cans are resonant cavities that provide high isolation between the two frequencies.

Vintage Motorola TLN8476A VHF Diplexer often referred to as a duplexer in the radio world.

part #: tln8476a price

• $175.00

specifications hamamateuradio:

• brand: Motorola
• mpn: Tln8476a
• type: Vhf Diplexer/duplexer
• unit type: Unit
• band: Vhf

offer hamamateuradio:

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

shipping hamamateuradio:

• transit: 5-11 Days
• class: Expedited
• type: Calculated
• cost: $38.15
• service: USPS Priority Mail
• carrier: USPS

payments hamamateuradio:

• wallet: Google-pay
• other
• credit card: Visa

general hamamateuradio:

• Radio Communication > Ham, Amateur Radio > Ham Radio Transceivers
• condition: Used

returns hamamateuradio:

• policy: No Returns

seller hamamateuradio:

• # reviews: 59
• city: Gulf Shores, Alabama
• rating: 100.0%

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