Build A 30W 50 Ohm Dummy Load


For testing out transmitters every ham should have a dummy load. The project I’m describing here is useful up to 30W. The parts used could allow up to 50W but there is no vents in the chassis.

The Parts

  • One small metal box
  • One chassis mount BNC connector
  • 26 1.3K 2W resistors.


The 26 resistors were soldered in parallel. One end was connected to the chassis. The other end was connected to the center pin of the BNC connector.


I realize that there isn’t much here. But hopefully the pictures give you some ideas. Use whatever parts you have on hand. The goal is to get a resistance load of 50 ohms. Good luck.

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