MIL-DTL-25708F
3.4 Design and construction. The antenna shall be of design and physical dimensions specified in the applicable
specification sheet (see 3.1). The construction of the antenna shall be of either unit or two piece construction. The
elements considered are the base and cover (radiating element).
3.4.1 Radio Frequency (RF) connectors. Connectors for a specific antenna shall be as required (see 3.1).
Materials, design, and construction of the types listed below shall conform to the specifications as follows:
Type of RF
Specification
connector
HN
BNC
Omni-spectra 260-2
Subminiature
or equivalent
3.4.1.1 Connector caps. All connectors shall be supplied with push-on plastic caps to prevent connector damage
and the entrance of moisture and foreign material during storage.
3.4.2 Temperature operating range. The antenna shall operate without electrical or mechanical deterioration over
the specified temperature range in accordance with the applicable specification sheet (see 3.1).
3.4.3 Seal (see 4.6). All openings of the antenna cavity shall be sealed to prevent air leakage during all changes in
surface pressure encountered in air operations between pressure altitudes of 0 to 100,000 feet.
3.4.4 Static load (see 4.7). The mechanical strength of the antenna shall withstand a uniformly distributed side
load in accordance with the applicable specification sheet (see 3.1).
3.4.5 Resistance to solvents (see 4.8). All materials used in construction shall withstand direct contact with
aromatic fuels and hydraulic fluids without causing electrical or mechanical deterioration.
3.5 Environmental requirements. The antenna shall withstand the environmental test requirements of 4.5.7
without mechanical or electrical deterioration. Following each environmental test, the antennas shall meet the
3.5.1 High temperature. When tested as specified in 4.5.7.1, the antenna shall meet the electrical requirements of
3.5.2 Temperature altitude. When tested as specified in 4.5.7.2, the antenna shall meet the electrical requirements
3.5.3 Temperature shock. When tested as specified in 4.5.7.3, the antenna shall meet the electrical requirements
3.5.4 Shock. When tested as specified in 4.5.7.4, the antenna shall meet the electrical requirements of 3.6.4 and
3.5.5 Vibration. When tested as specified in 4.5.7.5, the antenna shall meet the electrical requirements of 3.6.4
and 3.6.5.
3.5.6 Humidity. When tested as specified in 4.5.7.6, the antenna shall meet the electrical requirements of 3.6.4
and 3.6.5.
3.5.7 Fungus. When tested as specified in 4.5.7.7, the antenna shall meet the electrical requirements of 3.6.4 and
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