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MIL-HDBK-1012/1
Table 1
Separations and Clearances
SOURCE OF INTERFERENCE1
MINIMUM DISTANCE
FACILITY
Radio receiver (R) High-power transmitter stations:
2
station
25 mi (40 km)
Very low, frequency
15 mi (24 km)
Low frequency/high frequency
Navy control
5 mi (8 km)
Airfields and glide paths:
For general communications
5 mi (8 km)
For aeronautical receiving at air stations
1,500 ft (457 m)
Teletype and other electromechanical systems:
Installed in shielded room or level signaling
and keying modified
No requirement
Installed in unshielded rooms or high level
signaling and keying operation:
2 mi (3.2 km) from
Large installation (communication center)
nearest antenna
200 ft (61 m) from
Small installation (1 to 6 instruments)
nearest antenna
3,000 ft (914 m)
Main highways
High-tension overhead power-lines-receiver
1,000 ft (305 m) from
station feeders
nearest antenna
1 mi (1.6 km)
Habitable areas (beyond limits of restriction)
Areas capable of industrialization (beyond
limits of restriction)
3 mi (4.8 km)
Light industry)
5 mi (8 km)
Heavy industry)
1,500 ft (457 m)
Radar installation (depending on type)
Radio transmitter
3 mi (4.8 km)
Other transmitter stations
(T) stations
Airfields and glide paths:
For general communications transmitting
3 mi (4.8 km)
1,500 ft (457 m)
For aerological transmitting at air stations
Main highways
1,000 ft (305 m)
1,000 ft (305 m)
High-tension overhead power lines
from nearest antenna
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