MIL-DTL-25895A
3.4.2 Radiation. The relative level of energy radiated from the antenna shall not vary more than 10 percent above
or below the level outlined in the test procedure specified in 4.2.7.2.
3.4.3 Impedance. The nominal impedance of the antenna assembly shall be 50 ohms.
3.4.4 Radiation pattern. The antenna, when mounted in the center of a large horizontal ground plane, shall
provide vertically polarized radiation of essentially uniform intensity over 360 degrees of azimuth. The radiation
pattern of the antenna assembly shall not be less than 60 degrees wide at the half-power points in any plane
perpendicular to the mounting plane.
3.5 Resistance to environmental effects. The antenna shall withstand the environmental requirements for class 2
equipment of MIL-E-5400 without reducing the electrical or mechanical performance below the limits specified herein.
3.6 Weight. The antenna shall be of the lightest weight consistent with the other requirements of this specification
and in no event shall the installed weight of the antenna exceed 2.0 pounds. Installed weight shall include the
complete antenna assembly with nameplate and receptacle, but shall not include cabling external to the antenna,
plugs, mounting nuts or bolts, or any mounting bracket or fastening device which is not an integral part of the antenna
assembly.
3.7 Identification of product. Each antenna shall be marked with the nomenclature, serial number, contract
number, and the letters "U. S." Markings shall be in accordance with the applicable requirements of MIL-STD-130.
3.8 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally
preferable materials should be used to the maximum extent possible provided that the material meets or exceeds the
operational and maintenance requirements, and promotes economically advantageous life cycle costs. Antennas
provided shall be new and unused.
3.9 Workmanship. Antennas shall be manufactured and processed in a careful and workmanlike manner in
accordance with good engineering and production practices. The antennas shall be free from tool marks, deep
scratches, and other defects that will affect life, serviceability, or appearance.
4. VERIFICATION
4.1 Classification of tests. The inspection and testing of the antenna shall be classified as follows:
a.
Preproduction tests (see 4.2).
b.
Acceptance tests (see 4.3).
4.2 Preproduction tests.
4.2.1 Preproduction test sample. Three each Antenna AT-505/AP shall be subjected to the preproduction tests.
Tests shall be performed at the contractor's plant or other approved facility. All preproduction items shall be
considered to be a requirement over and above the number required for production installation and may be destroyed
during test.
4.2.2 Test report. After completion of the preproduction tests by the contractor, three copies of a complete report,
certified by an authorized official of the organization performing tests, shall be furnished to the acquiring activity. The
preproduction test report shall be submitted simultaneously with the preproduction samples.
4.2.3 Drawings. Three copies of drawings which show modifications to Air Force drawings, if any, shall be
supplied with the preproduction test sample when specified in the contract.
4.2.4 Preproduction tests. Preproduction tests shall consist of the following tests and the acceptance tests.
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