SWR/PWR scale

For all you guys who dont know( i was once there)here is a swr chart that shows the differences in power loss vs higher swr #

BUXCOMM
VSWR readings related to RF Power Loss in Watts.
The table shown below illustrates the SWR readings vs RF loss relationship for a
transmitter power output of 100 watts.
This is just a guide if all is working as it should be..

SWR Reading % OF LOSS ERP* Power Output in Watts Power Loss in Watts
SWR % lost Final watt out put
1.0:1 0.0% 100.0% 100.00 0.0
1.1:1 0.2% 99.8% 99.8 0.2
1.2:1 0.8% 99.2% 99.2 0.8
1.3:1 1.7% 98.3% 98.3 1.7
1.4:1 2.8% 97.2% 97.2 2.8
1.5:1 4.0% 96.0% 96 4.0
1.6:1 5.3% 94.7% 94.7 5.3
1.7:1 6.7% 93.3% 93.3 6.7
1.8:1 8.2% 91.8% 91.8 8.2
2.0:1 11.1% 88.9% 88.9 11.1
2.2:1 14.1% 85.9% 85.9 14.1
2.4:1 17.0% 83.0% 83 17.0
2.6:1 19.8% 80.2% 80.2 19.8
3.0:1 25.0% 75.0% 75 25
4.0:1 36.0% 64.0% 64 36
5.0:1 44.4% 55.6% 55.6 44.4
6.0:1 51.0% 49.0% 49 51
7.0:1 56.3% 43.8% 43.8 56.3
8.0:1 60.5% 39.5% 39.5 60.5
9.0:1 64.0% 36.0% 36 64
10.0:1 66.9% 33.1% 33.1 66.9
* ERP = Effective Radiated Power.
To compute your useful output power into the antenna, read your output power, and multiply it by the ERP
percentage in the above chart, using your SWR reading.
Example:
If you are operating PSK31 or similar digital mode and you know your transceiver puts out 50 watts, and the
VSWR is 1.5. Reference the above chart for a 1.5:1 reading, read the radiating efficiency, 96.0 percent.
Simply multiply 50 watts by .960 (96% converted to decimal). The result is 48.0 watts.
VISIT: http://www.WindomAntennas.com and http://www.BUXCOMM.com
73 de BucK4ABT © 1998 > 2013

 

Nope..whole wheat time..

I know i put spaces where they should be but site jumbled it all together..I left a pdf link download at the bottom for anyone wanting to save it..