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TABLE 15: STATION D

FIELD STRENGTH INSIDE HOUSE AND IN HAM SHACK DUE TO NEARBY ANTENNAS

(a) Transmission from tower-mounted Yagi (3 element) antenna adjacent to house and slightly above level of second floor (location of ham shack); 28.5 MHz; 450 W:

LOCATION

E FIELD (V/m)

H FIELD (mA/m)

(1) Directly in front of transceiver/amplifier in ham shack (localized)

21 - 53

--

(2) Typical operator's position in ham shack

3 - 15

(3) Ambient in middle of ham shack

10 - 21

(4) In doorway of ham shack

14 - 25

(5) Ambient in hallway

--- 10.5 - 12.8

--

9.1

11.7

(6) Localized at ceiling in hallway appx. 3-5 m from antenna location

68

--

(7) Doorway to bathroom close to

10 - 19

18.2

antenna location

(8) Localized near wall next to

---

46.9

antenna location

(b) Transmission from roof-mounted Yagi antenna (3 element) located appx. 3 m above roof over ham shack; 50.12 MHz; 900 W:

LOCATION

E FIELD (V/m)

H FIELD (mA/m)

(1) Ambient in ham shack

2.2 - 3.8

--

(2) Immediate vicinity of

21

--

amplifier (localized)

(3) Corner of ham shack

6.2 - 8.2

--

closest to antenna

___________________________________________________________________________________ NOTES:

  • (1)

    Model HI-3001 field intensity meter used to measure E field.

  • (2)

    Calibrated loop antenna + HP power meter used to measure H field.

  • (3)

    Measured values corrected for calibration error and rounded off.

29

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