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Band IV/V (UHF) High Power 3dB Coupler

Rev : 01 | Rev date : 16 Jun 2017
The DC618E-HP is a 3dB directional high power coupler for use in the UHF TV band for transmitter and channel combining.
In transmitter combining it is rated at 120kW average power, while for channel combiners it is ideally suited to combine 2 x 40kW into an 80kW output.
The device has two tandem-connected coupling sections catering for a combined 3.01dB coupling loss from 470MHz to 700MHz.


  • Compact for easy integration into equipment.
  • Very low insertion loss, (lowest for this class). 
  • Highest power rating for size/class.
  • Two possible mounting configurations.
  • For use in balanced combiner applications or transmitter power combining.
  • Patented heat transfer feature.
  • May be used as a stand-alone splitter.
  • Flanged and unflanged adaptors available.

DC618E-HP High Power 3dB Coupler

Technical features

General Specifications

Product LineComponents
Product TypeDirectional 3dB Couplers

Electrical Specifications

Frequency Range MHz470 - 700
Frequency BandUHF Band IV/V
Power RatingkW80 (DTV) average at 665 MHz with 15 dB PAR
Power Rating CommentsOutput Power (Max)
Input Return LossdB36 over operating channel (with 50 ohm load)
IsolationdB32 over operating frequency range
Output Power SplitdB-3.01 +/-0.25'
Output Phasedegrees-90 +/- 1

Mechanical Specifications

Standard Connector Size4 x 6-1/8" EIA Flanged Male

External Document Links