United We Stand  

Brainerd Area Amateur Radio Club, Inc.

VSWR and what it Means by Mark WØMH
VSWR Reflected
Power		 Load Resistance
When Normal = 50
1.0:1 0.0% 50 Ohms only
1.1:1 0.25% 45.5 or 55 Ohms
1.2:1 0.8% 41.5 or 60 Ohms
1.3:1 1.7% 38.5 or 65 Ohms
1.4:1 2.7% 35.7 or 70 Ohms
1.5:1 4.0% 33.3 or 75 Ohms
2.0:1 12.5% 25 or 100 Ohms
3.0:1 25.0% 16.7 or 150 Ohms
4.0:1 36.0% 12.5 or 200 Ohms
5.0:1 45.0% 10.0 or 250 Ohms
10:1 66.6% 5.0 or 500 Ohms
Infinite 100.0% Short or Open

VSWR (Voltage Standing Wave Ratio) is sometimes known as SWR (Standing Wave Ratio).  It is the ratio of the maximum voltage to the minimum voltage resulting from the interaction of the forward and reflected waves.

Stop in again sometime.  I'll leave the soldering iron on for you.  Mark WØMH

Return to the Ham Tips page  

  Return to BAARC Main Page

Ø Last updated 06/27/2007