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Under antenna

NR

--

--

0.08

0.04

0.02

Opposite antenna

NR

--

--

0.04

0.03

0.02

Perpendicular to antenna

NR

0.39

--

0.09

0.03

--

USED

<0.5

0.5

1.0

2.0

3.0

HI/AR/NR

(0.8)

(0.23)

(0.09)

--

--

HI/AR/NR

(0.21)

--

0.05

--

--

NR

0.7

--

0.16

0.05

0.03

NOTES: (1) Radial directions from antenna base were: (a) parallel to ground and directly under sloped antenna; (b) parallel to ground and away from antenna in opposite direction; (c) parallel to ground and perpendicular to antenna. (2) Measured values corrected using calibration factors and rounded off. Parentheses indicate average of two or more corrected readings. (3) * = estimated values (not measurements), for purpose of comparison, based on normalization from 100 W (28.15 MHz) data.

  • (4)

    Dashes = not measured.

  • (5)

    HI = Holaday Industries Model HI-3006 broadband field intensity meter; AR = Aeritalia Model TE 307

meter; NR = Narda Model 8631 meter.

TABLE 6: STATION A

MAGNETIC FIELD STRENGTH: "HALF-SLOPER" DIPOLE ANTENNA

*

28.15 MHz (1000 W) Under antenna Opposite antenna

NR NR

Perpendicular to antenna

NR

FIELD STRENGTH (A/m) [1 m above grd]

EQUIPMENT

DISTANCE ALONG RADIAL (m)

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

14.15 MHz (1000 W) Perpendicular to antenna

21.15 MHz (1000 W) Perpendicular to antenna

28.15 MHz (100 W)

FREQ (POWER)/ RADIAL DIRECTION (see notes)

7.15 MHz (1000 W) Perpendicular to antenna

-- --

1.2*

0.24

*

0.13

*

0.13

*

0.08

*

0.05

*

0.05

*

-- --

  • --

    0.28*

0.09*

--

16

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