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TABLE 14: STATION D

FIELD STRENGTH: YAGI (3 ELEMENT) HF BEAM ANTENNA

10

10.5

18.2

11

11.7

14.8

12

8.3

12.8

13

5.9

11.7

15

4.7

9.9

19

5.0

10.5

25

3.5

--

30

1.4

--

E FIELD (V/m)

H FIELD (mA/m)

DISTANCE (m)

[425 W]

[450 W]

(a) Antenna position 8 m above ground; 28.5 MH:

10

8.7

--

11

7.4

--

12

6.7

--

13

6.7

--

15

5.9

--

19

3.9

--

H FIELD (mA/m)

(b) Antenna position 8 m

above ground; 14.15 MHz; 450 :

DISTANCE (m)

E FIELD (V/m)

15

6.7

13.9

19

7.4

12.6

25

6.5

10.7

30

5.0

7.8

H FIELD (mA/m)

(c) Antenna position 14.6

m above ground; 28.5 MHz; 450 :

DISTANCE (m)

E FIELD (V/m)

15

6.6

13.2

19

6.7

11.5

25

5.5

10.7

30

4.5

9.1

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

H FIELD (mA/m)

(d) Antenna position 21.6

m above ground; 28.5 MHz; 450 :

DISTANCE (m)

E FIELD (V/m)

NOTES:

  • (1)

    Readings taken appx. 1 m height above ground.

  • (2)

    Model HI-3001 field intensity meter used for E field readings.

  • (3)

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

  • (4)

    Measured values corrected for calibration error and rounded off.

  • (5)

    Dashes = not measured.

28

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