66-13-44 (900×1000)

66-13-44 (4) 4-inch Cavity Duplexer

Frequency Range: 138-174 MHz
Frequency Spacing Min.: 0.5
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Ideal for high power, close frequency separation installations

  • Designed for combining two frequencies that require extra isolation. Can also be used as efficient pre-selectors
  • Temperature compensated to ensure frequency stability
  • High attenuation to minimize desense and interference from adjacent systems
  • Adjustable loops
Order Information
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  • Frequency Range, MHz


    Frequency Spacing Min., MHz


    Cavity Diameter, in

    (4) – 4″ Square

    Continuous Power Input, Watts



    N Female

    Insertion Loss, dB


    Channel Isolation, dB




    Temperature Range, ºC

    – 40 to +60

    Max Length, in (H x W x D)

    31 x 19 x 4

    Weight, lbs (kg)

    30 (13.6)


    19″ Rack Mount

  • Our 4 cavity 4-inch cavity duplexers are ideal for high power, close frequency separation installations. These filters are designed for combining two frequencies or can be used as efficient pre-selectors.
    If higher levels of isolation are required, please consider using 6 cavity configurations. Selectivity can be determined by the field-adjustable capacitors.
    Each cavity is temperature compensated for operation between -40ºC to +60ºC and has a gold alodine finish, silver-plated loops, and plated tuning rods.

  • Order Information Frequency Wall Mount 4 Cavities
    66-13-44 138-174 MHz 66-13-44WM 66-13-44
  • Questions & Answers
    1. Hello there,

      We have a comprod duplexer. The frequency response does not respond to one of the rod, we suspect something has broken in it. I am hoping to remove the rod from the can. Is there a good way of taking apart the can?

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Comprod Inc.

Comprod Inc.