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CELWAVE 536-6A Vhf Duplexer Rx Marlboro Jersey 146.150 143.90

146.150 Celwave 536-6a Vhf Duplexer Tx Mhz Rx 143.90 Marlboro New Jersey

( Brand: Celwave ), ( Manufacturer Part Number: 536-6A ), ( Type: Duplexer ), ( Band: Vhf )

Review CELWAVE Vhf Duplexer Tx Mhz Rx 143.90 Marlboro New Jersey

The **Celwave 536-6A VHF Duplexer** is a high-performance, precision-engineered RF component designed for dedicated two-way radio enthusiasts and professional operators seeking seamless communication across dual-frequency bands. This rugged, compact duplexer operates in the VHF range, specifically tailored for the **146.150 MHz transmit (TX) and 143.90 MHz receive (RX)** frequencies, making it an ideal solution for users in the Marlboro or Jersey area or any region requiring reliable duplexing between these critical channels. Built with a robust construction, the 536-6A ensures minimal signal loss and maximum isolation between transmit and receive paths, preventing interference and maintaining crystal-clear audio quality in both directions. Its efficient design incorporates high-quality RF filters and a low-loss waveguide structure, allowing for optimal power handling and durability under demanding conditions. Whether deployed in mobile, portable, or fixed installations, this duplexer excels in environments where stable, interference-free communication is essential, such as emergency services, public safety, or amateur radio setups. The Celwave 536-6A is not just a functional accessory but a reliable workhorse, ensuring that every transmission and reception remains crisp, clear, and uninterrupted perfect for operators who demand nothing less than excellence in their radio equipment.

### **Pros and Cons of buying a Celwave 536-6A VHF Duplexer (146.150 RX / 143.90 TX for Marlboro, NJ)**

#### **Pros:**

1. **Frequency-Specific Design** The duplexer is tuned for the exact frequencies used by the Marlboro, New Jersey repeater (146.150 MHz receive, 143.90 MHz transmit). This ensures optimal performance with minimal interference or signal loss, which is critical for clear communication on repeaters.

2. **Improved Signal Clarity** Duplexers separate the transmit and receive signals, preventing feedback and distortion that can occur when a single antenna is used for both sending and receiving. This results in cleaner audio and fewer issues with "splatter" or interference.

3. **Compatibility with Mobile/Portable Setups** If you re using a handheld radio (e.g., Yaesu FT-65R, Kenwood TH-D74) or a mobile installation (e.g., in a car), a duplexer helps maintain signal integrity, especially in areas with dense RF activity.

4. **Durability and Reliability** Celwave is a well-regarded brand in the amateur radio community, known for producing high-quality RF components. The 536-6A is designed for rugged use, making it suitable for both indoor and outdoor applications.

5. **Cost-Effective Solution** Compared to more advanced multi-band duplexers or separate antennas, this single-band duplexer is relatively inexpensive. It s a targeted upgrade rather than an overkill solution for general use.

6. **Easy Installation** The duplexer is designed for straightforward integration between a radio and antenna. It typically requires minimal wiring and no complex adjustments, making it accessible for both beginners and experienced operators.

7. **Reduces RF Exposure Concerns** By isolating the transmit and receive paths, the duplexer can help minimize the risk of RF exposure to sensitive equipment (e.g., computers, other radios) in close proximity.

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#### **Cons:**

1. **Single-Band Limitation** The duplexer is **only** tuned for the Marlboro repeater frequencies (146.150 RX / 143.90 TX). If you plan to use other repeaters or frequencies (e.g., 2-meter simplex, 70 cm, or different VHF/UHF bands), you ll need additional duplexers or a separate antenna setup. This lack of versatility may not be ideal for operators who frequently switch bands.

2. **Potential for Signal Loss** While duplexers are generally efficient, they introduce some insertion loss (typically 0.1 0.5 dB per path). For weak-signal operations or long-distance contacts, this minor loss may not be noticeable, but it s something to consider if you re operating at the limits of your radio s power.

3. **Physical Space Requirements** Duplexers occupy space between the radio and antenna. If you re working with tight installation constraints (e.g., in a small vehicle or compact shack), the additional length of cable and the duplexer itself may require careful routing.

4. **No Built-In Protection** The 536-6A does not include surge protection or other RF hazards safeguards. If you re operating in an area with lightning or high-power transmitters nearby, you may need additional protection (e.g., a ferrite bead or lightning arrester) to safeguard your radio.

5. **Dependence on Proper Matching** For optimal performance, the duplexer must be properly matched to your antenna s impedance (typically 50 ohms). Mismatches can lead to standing waves (SWR) or reduced efficiency. If your antenna is poorly matched, the duplexer won t fully compensate.

6. **Limited Use for Simplex Operations** If you frequently communicate on simplex (direct, non-repeater frequencies), a duplexer is unnecessary and may even degrade performance since it s designed for repeater use only.

7. **Potential for Drift Over Time** Like all RF components, duplexers can experience slight frequency drift due to temperature changes or aging. While this is rare, it s something to monitor, especially if you notice sudden audio quality issues.

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### **Ending Conclusion:**

The **Celwave 536-6A VHF Duplexer** is a **highly targeted and practical upgrade** for operators who **exclusively** use the Marlboro, New Jersey repeater (or similar single-band duplexer applications). Its strengths lie in its **frequency-specific tuning, reliability, and ease of use**, making it an excellent choice for those who prioritize clear repeater communication without unnecessary complexity.

However, its **single-band limitation** and lack of versatility mean it s not a "one-size-fits-all" solution. If you operate on multiple repeaters or bands, investing in a **multi-band duplexer** or **separate antennas** may be more cost-effective in the long run. Additionally, users should ensure their antenna is properly matched to avoid performance issues.

For the **Marlboro repeater user**, the duplexer is a **strong recommendation** if:

- You want to eliminate feedback and improve audio quality.

- You re using a handheld or mobile setup where signal integrity is critical.

- You re satisfied with a single-band solution and don t need flexibility for other frequencies.

If you re unsure whether you ll use it exclusively, consider testing the duplexer s impact on your current setup before committing. Alternatively, a **dual-band duplexer** (e.g., covering both 2-meter and 70 cm) could be a more future-proof investment.

**Final Recommendation:** **Buy the Celwave 536-6A if:**

- You **only** use the Marlboro repeater (or a similar single-frequency setup).

- You want to **eliminate feedback and improve repeater performance**.

- You re on a **budget** and don t need multi-band capability.

**Avoid or reconsider if:**

- You operate on **multiple repeaters or bands**.

- You prefer **simplex operations** (direct communication).

- You re unsure about long-term use and want a more versatile solution.

For most dedicated Marlboro repeater users, the duplexer is a **worthwhile addition** to their station.

Details:

specifications radiparaccessori:

  • brand: Celwave
  • mpn: 536-6a
  • type: Duplexer
  • band: Vhf

shipping radiparaccessori:

  • carrier: USPS
  • type: Calculated
  • cost: $8.65
  • transit: 4-10 Days
  • class: Standard
  • service: USPS Ground Advantage

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  • wallet: Paypal
  • credit card: Diners-club
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seller radiparaccessori:

  • # reviews: 11
  • rating: 100.0%
  • city: Parkersburg, West Virginia

returns radiparaccessori:

  • policy: No Returns

offer radiparaccessori:

  • quantity: 1
  • started: March 9, 2026
  • options: Ship-to-home
  • availability: In Stock
  • best offers: True
  • sold: 0

general radiparaccessori:

  • condition: Used
  • Radio Communication > Parts Accessories > Other Radio Communication Accs
type: duplexer, band: vhf,
category: electronics > radio communication > radio communication accs, sku: 8413690326961891,
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