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30-37-02A, 144-174 MHz, Duplexer

  • TX RX Systems offers a wide variety of Duplexer options to suit your application, including Vari-Notch®, Bandpass, and notch type circuits
  • Vari-Notch® design provides low loss and high isolation in a compact package
  • All high RF-current components silver-plated for highest performance
  • Various models to choose from to match your application.


Specifications for duplexers of unsymmetrical construction or response are listed as follows:

  • Isolation: Noise Suppression/Carrier Suppression
  • Insertion Loss: Tx Loss/Rx Loss



Duplexer Problems and Remedies

Product Specifications 
Item No30-37-02A
Item Name144-174 MHz, Duplexer
Frequency Range144-174 MHz (Tx Low)
Minimum Freq Separation3.0 MHz
Power Rating100 W
Insertion Loss1.4/1.5 dB
Number of Cavities6
Cavity Size2" sq.
Impedance Ω50
Dimensions H x W x D5.25" x 19" x 7.25"
Tx-Rx Port ConnectorsBNC
Antenna ConnectorsN
Temperature Range-30 to +60 °C
Shipping Weight14 lbs.