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0

4.3

122

2

4.3

87

3

7.8

82

4

8.7

74

6

21.3

69

8 (beneath end)

23.9

53

8 (beneath end)

33.3 (@2 m

--

TABLE 20: STATION F

FIELD STRENGTH: CENTER-FED, "INVERTED V" DIPOLE ANTENNAS

(a) "40 Meter" Antenna; 7.232 MHz; 1400 W; appx. 1 m ht abv gr : *

DISTANCE (m)

E FIELD (V/m)

H FIELD (mA/m)

ht abv grd)

2

5.7

69

4

6.6

63

6

7.9

59

8

13.4

54

10

14.3

46

12

16.1

39

14 (beneath end)

16.1

36

16

15.2

31

18

14.3

26

20

13.4

20

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

(b) "80 Meter" Antenna; 3.8 MHz; 1400 W; appx. 1 m ht abv grd:*

DISTANCE (m)

  • 0

    (near cable feed)

H FIELD (mA/m)

66

E FIELD (V/m)

34.0

NOTES: (1) * Antenna fed from center and attached to pole appx. 14 m ht above ground. Each segment appx. 10.5 m; each end appx. 6 m ht above ground. (2) ** Antenna fed from center and attached to pole appx. 25 m ht above ground. Each segment appx. 20 m; each end appx. 8 m ht above ground. (3) Measurements made underneath one segment from pole toward one end with 0 m = bottom of pole.

  • (4)

    IFI Model EFS-1 field intensity meter used for E field readings.

  • (5)

    Calibrated loop antenna + HP power meter used for H field readings.

  • (6)

    Measured values corrected for calibration error and rounded off.

  • (7)

    Dashes = not measured.

37

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