SWR and Transmission Loss Chart.
(Remember: 6db = 1 S Unit)

VSWR

Return Loss (dB)

Reflected Power (%)

Transmiss. Loss (dB)

VSWR

Return Loss (dB)

Reflected Power (%)

Transmiss. Loss (dB)

1.00

oo

0.000

0.000

1.38

15.9

2.55

0.112

1.01

46.1

0.005

0.0002

1.39

15.7

2.67

0.118

1.02

40.1

0.010

0.0005

1.40

15.55

2.78

0.122

1.03

36.6

0.022

0.0011

1.41

15.38

2.90

0.126

1.04

34.1

0.040

0.0018

1.42

15.2

3.03

0.132

1.05

32.3

0.060

0.0028

1.43

15.03

3.14

0.137

1.06

30.7

0.082

0.0039

1.44

14.88

3.28

0.142

1.07

29.4

0.116

0.0051

1.45

14.7

3.38

0.147

1.08

28.3

0.144

0.0066

1.46

14.6

3.50

0.152

1.09

27.3

0.184

0.0083

1.47

14.45

3.62

0.157

1.10

26.4

0.228

0.0100

1.48

14.3

3.74

0.164

1.11

25.6

0.276

0.0118

1.49

14.16

3.87

0.172

1.12

24.9

0.324

0.0139

1.50

14.0

4.00

0.18

1.13

24.3

0.375

0.0160

1.55

13.3

4.8

0.21

1.14

23.7

0.426

0.0185

1.60

12.6

5.5

0.24

1.15

23.1

0.488

0.0205

1.65

12.2

6.2

0.27

1.16

22.6

0.550

0.0235

1.70

11.7

6.8

0.31

1.17

22.1

0.615

0.0260

1.75

11.3

7.4

0.34

1.18

21.6

0.682

0.0285

1.80

10.9

8.2

0.37

1.19

21.2

0.750

0.0318

1.85

10.5

8.9

0.40

1.20

20.8

0.816

0.0353

1.90

10.2

9.6

0.44

1.21

20.4

0.90

0.0391

1.95

09.8

10.2

0.47

1.22

20.1

0.98

0.0426

2.00

09.5

11.0

0.50

1.23

19.7

1.08

0.0455

2.10

09.0

12.4

0.57

1.24

19.4

1.15

0.049

2.20

08.6

13.8

0.65

1.25

19.1

1.23

0.053

2.30

08.2

15.3

0.73

1.26

18.8

1.34

0.056

2.40

07.7

16.6

0.80

1.27

18.5

1.43

0.060

2.50

07.3

18.0

0.88

1.28

18.2

1.52

0.064

2.60

07.0

19.5

0.95

1.29

17.9

1.62

0.068

2.70

06.7

20.8

1.03

1.30

17.68

1.71

0.073

2.80

06.5

22.3

1.10

1.31

17.4

1.81

0.078

2.90

06.2

23.7

1.17

1.32

17.2

1.91

0.083

3.00

06.0

24.9

1.25

1.33

17.0

2.02

0.087

3.50

05.1

31.0

1.61

1.34

16.8

2.13

0.092

4.00

04.4

36.0

1.93

1.35

16.53

2.23

0.096

4.50

03.9

40.6

2.27

1.36

16.3

2.33

0.101

5.00

03.5

44.4

2.56

1.37

16.1

2.44

0.106

6.00

02.9

50.8

3.08