10 Meter Antenna Factor

Frequency (MHz)

Element Length (L/2-in.)

Antenna Factor (dB/m)

Gain (dBi)

Gain (Numeric)

45

61 1/2

1.80

1.51

1.42

50

58

3.10

1.13

1.30

55

51

3.20

1.85

1.53

57

47 1/2

4.10

1.26

1.34

63

47 1/2

4.47

1.76

1.50

69

43

4.58

2.45

1.76

79

36 3/4

5.28

2.92

1.96

85

33 3/4

5.67

3.17

2.07

90

32 5/8

6.36

2.97

1.98

95

30 5/8

6.72

3.08

2.03

100

28 3/4

7.76

2.49

1.77

105

27 1/4

8.95

1.72

1.49

110

25 7/8

9.32

1.76

1.50

115

24 5/8

10.00

1.46

1.40

120

23 3/8

10.48

1.35

1.36

125

22 3/8

11.12

1.06

1.28

130

21 1/2

11.14

1.38

1.37

135

20 3/4

11.39

1.46

1.40

140

20 1/8

11.37

1.80

1.51

145

19 3/8

11.72

1.76

1.50

150

18 3/4

11.67

2.10

1.62

155

18

11.06

2.99

1.99

160

17 1/8

11.50

2.83

1.92

165

16 5/8

12.28

2.31

1.70

170

16 1/8

11.73

3.13

2.05

175

15 5/8

12.49

2.62

1.83

177

15 1/4

12.90

2.31

1.70

183

14 3/4

13.40

2.10

1.62

189

14 5/16

14.22

1.56

1.43

195

14 1/16

15.10

0.95

1.24

201

13 5/8

15.40

0.91

1.23

207

13 1/4

15.50

1.07

1.28

213

12 1/2

15.80

1.01

1.26

219

12 1/4

16.30

0.76

1.19