ARC-182\(V\) radio set. The antenna is an aircraft fuselage mounted blade enclosed element. The antenna is a broadband, fix tuned, exhibits omnidirectional radiation pattern, and is vertically polarized for radiating and receiving radio waves in the 30-88 MHz, 108-174 MHz, and 225-400 MHz communication bands.

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MIL-DTL-85670D

Adhesive sealants used to seal and protect terminations shall conform to MIL-A-46146.

If potting compounds are used to seal and protect connector terminations, MIL-PRF-8516 and MIL-PRF-

23586, grade B compounds are required.

Compatible primers and barrier coating shall be used where necessary to promote adhesion. Polytetra-

fluoroethylene (TFE) and fluorinated ethylene propylene surfaces shall be etched to promote adhesion.

Conformal coatings shall conform to best manufacturing practice.

All organic materials having ester linkages shall have been tested for hydrolytic stability. The use of natural

leather, magnesium, and magnesium alloys is prohibited.

Protection of dissimilar metal combinations shall be assured. Unless suitably protected against electrolytic

corrosion, dissimilar metals shall not be used in intimate contact with each other. (MIL-HDBK-454,

guideline 16 may be used for guidance).

3.3.5 Interchangeability. Physical and functional interchangeability shall exist for the antenna. (MIL-HDBK-5400

guidelines may be used for guidance). The antenna shall be constructed to preclude the requirement for any

adjustment when replacing an item by another item of the same type designation.

3.3.6 Pure tin. The use of pure tin, as an underplate or final finish, is prohibited both internally and externally. Tin

content of antenna components and solder shall not exceed 97 percent, by mass. Tin shall be alloyed with a

minimum of 3 percent lead, by mass (see 6.7).

3.4 Design and construction. The antenna shall conform with best manufacturing practices and with this

specification for construction and for workmanship. In any case, it is a condition of final acceptance that the antenna

shall meet all the performance requirements of this specification. (MIL-HDBK-5400 guidelines may be used for

guidance.)

3.4.1 RF connector. The RF connector shall be as specified in MIL-PRF-39012 (Series TNC, uncabled receptacle,

socket, jam nut mounted, class 2).

3.4.2 Maintainability. The antenna shall require no scheduled maintenance.

3.4.2.1 Repairability. The antenna shall be classified as a non-repairable, throw-away type item.

3.4.3 Transportability. The antenna shall be transportable by air, rail, truck, and ship when packaged as specified

in contract or order.

3.4.4 Standard conditions. The following conditions shall be used to establish normal performance characteristics

under standard conditions and for making laboratory bench tests, except that required field tests may be conducted

under outside ambient conditions:

Room ambient (25�C � 10�C).

Temperature:

Altitude:

Normal ground.

Vibration:

None.

Humidity:

Room ambient up to 90 percent relative humidity.

3.4.4.1 Service conditions. The antenna shall operate as required under any of the environmental service

conditions or combination of these conditions as indicated herein. The antenna shall meet class 1 temperature and

altitude requirements of 50,000 feet altitude and continuous sea level operation over the temperature range of -54�C

to +55�C (+71�C intermittent operation). The environmental test methods in 4.5.4 shall apply.