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.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
1610-1700 kHzCOMPUTED FOR 1655 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 20-A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
1610-1700 kHzCOMPUTED FOR 1655 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 20
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
1520-1600 kHzCOMPUTED FOR 1560 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 19-A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
1520-1600 kHzCOMPUTED FOR 1560 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 19
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
1430-1510 kHzCOMPUTED FOR 1470 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 18-A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
1430-1510 kHzCOMPUTED FOR 1470 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 18
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
1340-1420 kHzCOMPUTED FOR 1380 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 17-A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
1340-1420 kHzCOMPUTED FOR 1380 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 17
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
1250-1330 kHzCOMPUTED FOR 1290 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 16-A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
1250-1330 kHzCOMPUTED FOR 1290 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 16
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
1180-1240 kHzCOMPUTED FOR 1210 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 15-A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
1180-1240 kHzCOMPUTED FOR 1210 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 15
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
1110-1170 kHzCOMPUTED FOR 1140 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 14-A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
1110-1170 kHzCOMPUTED FOR 1140 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 14
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
1040-1100 kHzCOMPUTED FOR 1070 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 13-A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
1040-1100 kHzCOMPUTED FOR 1070 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 13
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
970-1030 kHzCOMPUTED FOR 1000 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 12-A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
970-1030 kHzCOMPUTED FOR 1000 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 12
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
920-960 kHzCOMPUTED FOR 940 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 11-A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
920-960 kHzCOMPUTED FOR 940 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 11
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
870-910 kHzCOMPUTED FOR 890 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 10-A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
870-910 kHzCOMPUTED FOR 890 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 10
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
820-860 kHzCOMPUTED FOR 840 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 9 -A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
820-860 kHzCOMPUTED FOR 840 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 9
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
770-810 kHzCOMPUTED FOR 790 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 8 -A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
770-810 kHzCOMPUTED FOR 790 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 8
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
720-760 kHzCOMPUTED FOR 740 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 7 -A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
720-760 kHzCOMPUTED FOR 740 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 7
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
690-710 kHzCOMPUTED FOR 700 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 6 -A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
690-710 kHzCOMPUTED FOR 700 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 6
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
660-680 kHzCOMPUTED FOR 670 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 5 -A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
660-680 kHzCOMPUTED FOR 670 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 5
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
630-650 kHzCOMPUTED FOR 640 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 4 -A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
630-650 kHzCOMPUTED FOR 640 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 4
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
600-620 kHzCOMPUTED FOR 610 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 3 -A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
600-620 kHzCOMPUTED FOR 610 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 3
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
570-590 kHzCOMPUTED FOR 580 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 2 -A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
570-590 kHzCOMPUTED FOR 580 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 2
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
540-560 kHzCOMPUTED FOR 550 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 1 -A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
540-560 kHzCOMPUTED FOR 550 kHz
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
0.1
0.5
1
1.5
2
3
4
5
6
7
8
10
15
20
30
40
5000
INVERSE DISTANCE 100 mV/m AT 1 km
KILOMETERS FROM ANTENNAGRAPH 1
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
10
.1
20
.2
30
.3
40
.4
50
.5
60
.6
70
.7
80
.8
90
.9
100
1
200
2
300
3
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
2000
20
3000
30
4000
40
5000
50
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.00070.00080.00090.001
0.002
0.003
0.004
0.005
0.006
0.0070.0080.0090.01
0.02
0.03
0.04
0.05
0.06
0.070.080.090.1
0.2
0.3
0.4
0.5
0.6
0.70.80.91
2
3
4
5
6
789
10
20
30
40
50
60
708090
100
200
300
400
500
600
700800900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
KILOMETERS FROM ANTENNAGRAPH ___
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
.1
.1
.2
.2
.3
.3
.4
.4
.5
.5
.6
.6
.7
.7
.8
.8
.9
.9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
20
20
30
30
40
40
50
50
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
200
300
400
500
600
700
800
900
1000
GROUND WAVE FIELD STRENGTH
VERSUS
DISTANCE
KILOMETERS FROM ANTENNAGRAPH ____-A
KILOMETERS FROM ANTENNA
MIL
LIV
OL
TS/
ME
TE
R
AM Groundwave Field Strength Graphs ( 540 to 1700 kHz )
per 47 CFR Sections 73.183 and 73.184
Sections 73.183 and 73.184 refer to AM groundwave field strength Graphs 1 through 20.
However, these graphs are not available in the FCC's rules. Therefore, we have provided
three versions of these graphs, using PDF and PostScript files.
Best quality and smallest file sizes will be obtained from the PDF versions of these
curves. The PDF graph files can be printed on larger paper (e.g., 11" x 17") with
excellent quality. Most users will find this option to be the best choice. For each graph
number (1 through 20), there are two graphs provided. The first graph contains two sets
of curves. The bottom set of curves covers distances between 10 to 5000 km from the
transmitter site, while the top set of curves covers distances between 0.1 and 50 km on an
expanded scale. Electric field strengths in millivolts per meter are listed on the left
margin. The numbers on the individual curves represent ground conductivities, with the
best conductivity (5000) corresponding to seawater (salt water) and the lowest
conductivity (0.1) corresponding to poorly conducting soil. Ground conductivities in the
United States typically fall between 0.1 and 30 milliSiemens per meter (mS/m, formerly
millimhos per meter, where 1 mho = 1 / ohm) (see the map). The "A" series of graphs
(Graph Number dash A) contain an expansion of the top set of curves, covering distances
between 0.1 and 50 km from the transmitter site.