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1 Year Warranty

Free $97 Course

Have questions? Give us a call! (816) 532-8451

4-Cavity TXRX 350W UHF Duplexer

At UHF, the TX RX Vari-Notch® design is the most commonly used. Vari-Notch® provides a low-loss pseudo-bandpass characteristic that can exist very close to a deep notch. Proven low-loss and low-noise construction techniques are used such as welded cavity construction; silver-plated loops, Alballoy®-plated integrated loop plates and connectors; as well as a unique fingerstock-free high-conductivity silver-plated tuning probe. Our cavities are constructed of hardened aluminum which, unlike most copper cavities, resists denting and associated detuning.

  • All high RF-current components silver-plated for highest performance
  • Vari-Notch® design provides low loss and high isolation.
  • 406-430 MHz, 3.0 MHz Minimum Freq Separation
  • 442-450 MHz, 5.0 MHz Minimum Freq Separation
  • 450-470 MHz, 5.0 MHz Minimum Freq Separation
  • Power Rating 350 W 
  • 80 dB  Isolation each model
  • 0.8 dB Insertion Loss  (406-430 MHz)
  • 0.6 dB Insertion Loss  (442-450 MHz)
  • 0.6 dB Insertion Loss  (450-470 MHz)
  • 4 Cavities in 19" 3U rack configuration
  • 4" Diameter cavities 
  • 1.3:1  VSWR
  • 50 Impedance 
  • Dimensions: 5.25” x 19” x +3”/-9” (133 x 483 x +76/-229 mm)
  • 406-430 N Type Tx-Rx and Antenna Port Connectors
  • 442-450 N Type Tx-Rx and Antenna Port Connectors 
  • 450-470 N Type Tx-Rx and Antenna Port Connectors
  • -40 to +80 °C Temperature Range
  • 14 lbs

Sales Tax is charged for the following states:  Missouri, New York, California, Illinois, and Texas

Chat with us online or give us a call us at (816)-532-8451 if you have any questions.

These duplexers have a lead of 4 weeks as they are custom built and tuned 

    Please review our return policy here

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    Original price $ 1,342.00 - Original price $ 1,342.00
    Original price
    $ 1,342.00
    $ 1,342.00 - $ 1,342.00
    Current price $ 1,342.00

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    Free $97 Training Course

    5-Star American Based Tech Support

    High-quality Versatile Commercial Grade Products

    In-house Programming

    Free Tuning

    Expert Tech Community

    Free Technical Consultation

    Customer Reviews

    Based on 2 reviews
    William Blum
    4-Cavity TXRX 350W UHF Duplexer

    Cavity set arrived and was analyzed. The high freq notch was off soecified frequency. Downloaded the Txrx 4-cavity tuning doc. Tweaked the suspect cavity. Checked against specs and found it to be "right where it's specified".
    Well worth the price.

    Jeffrey Hopkins
    Second followup review

    The duplexer is still working great. The previous one was in service 30 plus years. The system was struck by lightning several times over the years and finally went south and replaced by this one.

    Real Customers, Real Reviews!