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Page Title:
Table 5-2. Minimum safe distances between radio frequency (RF) transmitters and electric blasting operations |
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|  DOE-HDBK-1092-2004
Table 5-2. Minimum safe distances between
radio frequency (RF) transmitters and electric blasting operations.
Minimum Safe Distances (ft)
Transmitter power
Commercial AM broadcast
HF transmitters other
(watts)
transmitters
than AM
100
750
750
500
750
1,700
1,000
750
2,400
4,000
750
4,800
5,000
850
5,500
10,000
1,300
7,600
25,000
2,000
12,000
50,000b
2,800
17,000
100,000
3,900
24,000
500,000,c
8,800
55,000
b
Present maximum power of U.S. broadcast transmitters in commercial AM broadcast frequency
range (0.535 to 1.605 MHz).
c
Present maximum for international broadcast.
Table 5-3. Minimum safe distances between TV and FM broadcasting
transmitters and electric blasting operations.,
Minimum safe distances (ft)
Effective radiation
Channels
Channels
UHF
power (watts)
2-6 & FM
7-13
Up to 1,000
1,000
750
600
10,000
1,800
1,300
600
100,000 b
3,200
2,300
1,100
316,000 c
4,300
3,000
1,450
1,000,000
5,800
4,000
2,000
5,000,000 d
9,000
6,200
3,500
10,000,000
10,200
7,400
6,000
100,000,000
-
-
-
b
Present maximum power, channels 2 to 6 and FM.
c
Present maximum power, channels 7 to 13.
d
Present maximum power, channels 14 to 83.
5-9
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