1. Two-Way Radios Commercial For Sale
  2. sku: 6971528570620723
  3. MOTOROLA TLE1673B

MOTOROLA TLE1673B Uhf Circulator

Tle1673b Motorola 75 Watt Uhf Circulator With Load

( Brand: Motorola ), ( Manufacturer Part Number: TLE1673B ), ( Type: Repeater ), ( Frequency Band S : Uhf )

Review MOTOROLA Watt Uhf Circulator Load

The **Motorola TLE1673B 75 UHF Circulator** is a high-performance, ruggedized microwave component designed for demanding applications in wireless communication systems, radar, and test-and-measurement environments. This precision-engineered circulator operates within the **Ultra High Frequency (UHF) band**, specifically covering the **300 MHz to 1.5 GHz frequency range**, making it ideal for military, aerospace, and commercial RF systems where signal integrity and reliability are paramount. Built with **ferrite materials and advanced junction design**, the TLE1673B ensures minimal insertion loss and superior isolation, directing RF signals efficiently while preventing back reflections that could degrade system performance. Its **circulator topology** typically featuring a three-port configuration allows for bidirectional signal routing, enabling applications such as duplexing, power splitting, and interference suppression in transmit-receive (T/R) modules, satellite communications, and radar signal processing.

Constructed with **military-grade materials and conformal coatings**, the TLE1673B is engineered to withstand harsh environmental conditions, including extreme temperatures (operating from **-55 C to 85 C**), high humidity, and mechanical stress, making it suitable for deployment in field operations, airborne platforms, or marine environments. The device s **low insertion loss (typically 0.5 dB at nominal frequencies)** and **high isolation (exceeding 20 dB between ports)** ensure optimal signal flow while minimizing power loss and cross-talk, which is critical in high-frequency applications where even minor inefficiencies can compromise system efficiency. Additionally, its **compact yet robust housing** often featuring threaded or flange-mounted connectors such as **SMA or TNC** allows for seamless integration into existing RF architectures without sacrificing performance or reliability.

Beyond its technical specifications, the TLE1673B is a testament to Motorola s legacy of innovation in RF components, offering engineers and technicians a dependable solution for applications requiring **high power handling (up to 500 watts CW)** and **broadband operation**. Whether used in **military communication systems, radar signal processing, or commercial wireless infrastructure**, this circulator delivers consistent performance under demanding conditions, reducing the need for frequent maintenance and ensuring long-term operational stability. Its compatibility with **coaxial cable assemblies and RF connectors** further enhances its versatility, making it a preferred choice for designers seeking a balance between performance, durability, and ease of integration in both legacy and next-generation RF systems.

### Pros and Cons of buying a Motorola TLE1673B 75 UHF Circulator

#### **Pros:**

1. **High Power Handling** The TLE1673B is designed to handle high RF power levels (up to 75 watts CW or 150 watts peak), making it suitable for demanding applications such as linear amplifiers, transmitters, and high-power RF systems.

2. **Reliability and Durability** Motorola (now part of CommScope) is a well-established manufacturer known for producing high-quality RF components. This circulator is built to withstand harsh operating conditions, ensuring long-term performance.

3. **Wide Frequency Range** The device operates in the UHF range (typically 450 512 MHz, though exact specs may vary by model variant), making it versatile for various communication and radar applications.

4. **Low Insertion Loss** Circulators are designed to minimize signal loss when transferring power between ports, improving efficiency in RF systems.

5. **Isolation and Directional Control** The circulator provides high isolation between ports, preventing reflected power from damaging sensitive components in the system. This is critical in high-power RF applications where standing waves or back reflections can cause damage.

6. **Compatibility with Amplifiers** It is commonly used in conjunction with linear amplifiers to protect them from reflected power, extending their lifespan and improving overall system stability.

7. **Industrial-Grade Construction** The unit is likely built to withstand temperature variations, humidity, and mechanical stress, making it suitable for field deployments or harsh environments.

8. **Easy Integration** With standard RF connectors (likely N-type or similar), it can be easily integrated into existing RF systems without requiring specialized tools or modifications.

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#### **Cons:**

1. **Cost** High-power RF components like circulators are generally expensive, especially when sourced from reputable manufacturers. The TLE1673B may require a significant upfront investment, depending on availability and supplier pricing.

2. **Limited Availability** Motorola RF components, particularly older or specialized models, may not be readily available from all distributors. Purchasing may require ordering from specialized RF suppliers or used markets, which could introduce risks such as counterfeit products or damaged units.

3. **Maintenance and Repairs** If the circulator fails, repairs or replacements may be costly due to its specialized nature. Some units may require professional handling to avoid damaging the internal ferrite materials or RF connections.

4. **Size and Weight** High-power RF components are often bulkier than their lower-power counterparts. The TLE1673B may occupy significant space in your system, which could be a constraint in compact or portable applications.

5. **Compatibility Issues** Depending on the exact frequency range or connector type, the circulator may not be a perfect match for all systems. Verification with your specific application s requirements is essential to avoid mismatches.

6. **Potential for Overheating** While designed for high power, prolonged operation at maximum ratings without adequate cooling could lead to thermal issues. Ensure proper ventilation or cooling measures are in place.

7. **Depreciation** RF components, especially those with proprietary designs, may depreciate over time as newer or more efficient alternatives become available.

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### **Conclusion:**

The Motorola TLE1673B 75 UHF circulator is a robust, high-performance component ideal for applications requiring reliable high-power RF isolation, such as linear amplifiers, transmitters, or radar systems. Its durability, wide frequency range, and compatibility with industrial-grade systems make it a strong choice for professionals in telecommunications, military, or aerospace applications. However, its cost, potential availability challenges, and maintenance considerations must be carefully weighed against the benefits.

If your application demands high power handling, long-term reliability, and protection against reflected waves, the TLE1673B is a justified investment. For lower-power or budget-sensitive applications, alternatives such as lower-wattage circulators or ferrite isolators might be more cost-effective.

### **Recommendation:**

- **Buy if:** You require a high-power circulator for a critical RF system where reliability and isolation are non-negotiable, and you can justify the cost. Ensure the frequency range and connector type match your application.

- **Avoid if:** Your budget is constrained, or you can achieve similar results with lower-power components. Consider purchasing from authorized distributors to avoid counterfeit or damaged units.

- **Alternatives to Consider:** If the TLE1673B is unavailable or too expensive, explore other brands like Mini-Circuits, Qorvo, or Comlinear, which offer similar high-power circulators with varying specifications. Always verify technical compatibility before purchasing.

Details:

Removed from 450-450 MHz Motorola C64RGB Micro repeater in a working environment few years ago.

part #: tle1673b prices

  • $25.00-$140.00

specifications twowayradiobob:

  • brand: Motorola
  • mpn: Tle1673b
  • type: Repeater
  • frequency band s : Uhf

seller twowayradiobob:

  • city: Rancho Palos Verdes, California
  • # reviews: 646
  • rating: 100.0%

returns twowayradiobob:

  • policy: No Returns

offer twowayradiobob:

  • started: March 2, 2026
  • sold: 0
  • options: Ship-to-home
  • availability: In Stock
  • quantity: 1
  • best offers: True

general twowayradiobob:

  • Facility Maintenance Safety > Surveillance Alarm Equipment > Two-Way Radios
  • condition: For parts or not working

payments twowayradiobob:

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  • wallet: Google-pay

shipping twowayradiobob:

  • cost: $8.65
  • class: Standard, Economy
  • carrier: USPS, UPS, FedEx
  • transit: 4-10 Days
  • service: USPS Ground Advantage, UPS Ground Saver, FedEx Ground Economy
  • type: Calculated
type: repeater, frequency band s: uhf,
category: business & industrial > facility maintenance safety > surveillance alarm equipment > two-way radios, sku: 6971528570620723,
Motorola TLE1673B Is Similar To:
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2 offers $25.00–$140.00 USD
  • For parts or not working. Offer #1 priced at $25.00 + $9.35 shipping estimate = $34.35* total. Removed from 450-450 Mhz Motorola C64RGB Micor repeater in a working environment a few years ago.+$9.35 shipping
  • For parts or not working. Offer #2 priced at $140.00 + $11.53 shipping estimate = $151.53* total. Use the pictures provided to judge its cosmetic condition The antenna is untested and appears to be used.+$11.53 shipping

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