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28-65-08A, 406-430 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 No28-65-08A
Item Name406-430 MHz, Duplexer
Frequency Range406-430 MHz
Minimum Freq Separation4.5 MHz
Power Rating100 W
Isolation80 dB
Insertion Loss1.2 dB
Number of Cavities4
Cavity Size1.25" x 2" rect.
Impedance Ω50
Dimensions H x W x D1.75" x 19" x ± 2.5"
Tx-Rx Port ConnectorsBNC
Antenna ConnectorsN
Temperature Range-30 to +60 °C
Shipping Weight5 lbs.