SWR Play
Standing Wave Ratio · Reflection & Power Calculator
W
: 1
1.5
SWR
GOOD
Reflection Coefficient |Γ|
0.200
|Γ| = (SWR − 1) / (SWR + 1)
Reflected Power
4.00 W
P_ref = P_fwd × |Γ|²
Return Loss
13.98 dB
RL = −20 × log₁₀(|Γ|)
Delivered to Antenna
96.0 W
P_del = P_fwd × (1 − |Γ|²)
Power Budget
Transmission Line · Wave Visualization
Forward wave
Reflected wave (scales with SWR)
⚠ SWR ≥ 2.5 — High reflected power detected. This can damage your PA finals. Check antenna match, feedline, and connectors.