3 Meter Antenna Factor

Frequency (MHz)

Element Length (L/2-in.)

Antenna Factor (dB/m)

Gain (dBi)

Gain (Numeric)

45

61 1/2

2.3

1.01

1.26

50

58

3.0

1.23

1.33

55

51

3.5

1.55

1.43

57

47 1/2

3.8

1.56

1.43

63

47 1/2

4.2

2.06

1.61

69

43

4.8

2.25

1.68

79

36 3/4

5.6

2.62

1.83

85

33 3/4

6.5

2.37

1.72

90

32 5/8

7.1

2.27

1.69

95

30 5/8

7.5

2.28

1.69

100

28 3/4

8.1

2.19

1.65

105

27 1/4

8.6

2.12

1.63

110

25 7/8

9.0

2.06

1.61

115

24 5/8

9.5

1.96

1.57

120

23 3/8

10.1

1.75

1.50

125

22 3/8

10.5

1.66

1.47

130

21 1/2

10.8

1.68

1.47

135

20 3/4

11.3

1.56

1.43

140

20 1/8

11.5

1.70

1.48

145

19 3/8

11.8

1.66

1.46

150

18 3/4

12.0

1.80

1.51

155

18

12.0

2.09

1.62

160

17 1/8

12.3

2.03

1.60

165

16 5/8

12.7

1.91

1.55

170

16 1/8

12.8

2.03

1.59

175

15 5/8

13.1

2.02

1.59

177

15 1/4

13.3

1.91

1.55

183

14 3/4

14.0

1.50

1.41

189

14 5/16

14.3

1.46

1.40

195

14 1/16

14.8

1.25

1.33

201

13 5/8

15.2

1.12

1.29

207

13 1/4

15.2

1.37

1.37

213

12 1/2

15.5

1.31

1.35

219

12 1/4

15.7

1.31

1.35