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SWR & Return Loss Simulator

SWR & Return Loss Simulator

Interactive RF Transmission Line Visualizer

How to use this simulator:

In a real radio system, the SWR (Standing Wave Ratio) depends on how well the antenna is tuned, not on transmitter power.

  • Adjust Antenna SWR to simulate antenna matching and observe reflected power.
  • Change Forward Power to test different transmitters — SWR remains constant while reflected power scales automatically.
SWR METER
1 1.5 2 3 5 ∞
Transmitter Forward Power 100 W
Antenna SWR (Load Match) 1.50
Reflected Power (Loss) 4.0 W
SWR
1.50
Return Loss
14.0 dB
To Antenna
96.0 W
Efficiency
96.0 %
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