MIL-DTL-55036C
cable, the values shall not exceed the value obtained by multiplying the value for 1000 feet by the square
root of the ratio of the length in question to 1000 feet (see 4.7.6).
3.2.7 Attenuation. The attenuation at 1000Hz at 20 °C shall be not greater than 2.7db per mile of cable
terminated with 600Ω of resistance or when computed from measured primary cable characteristics:
resistance and capacitance (see 4.7.7).
3.2.8 Spark test. The jacket shall withstand a spark test of 7,500 V rms when tested as specified in
3.3 Mechanical requirements (see 4.8).
3.3.1 Extreme temperature (aging). Following the tests specified in 4.8.1, there shall be no visible
evidence of cracking of the jacket or the steel braid when examined under a magnifying glass of
approximately 3 diameters magnification (focal distance 8 cm). The first and last turns shall be
discounted.
3.3.2 Breaking strength. The cable shall be prepared as specified in 4.8.2. A 100 pound static load
shall be applied initially for a period of one half hour. The cable shall be marked with tape to indicate
relationship between cable core, cable jack and cable grip. The static load shall be increased to
800+ 20 pounds for a period of 16 hours. Following the test, the cable shall show no rupture of the jacket
and slippage of the cable core shall not exceed .500 inch (12.7 mm) (see 4.8.2).
3.3.3 Flexing. After being subjected to 2000 cycles of the flex test of 4.8.3 the cable shall meet the
requirements of 3.2.1 dc resistance, 3.2.2 dielectric strength, and 3.2.3 insulation resistance. In addition,
there shall be no physical damage to the cable. Upon completion the portion of cable tested shall be
discarded.
3.3.4 Twisting. After being subjected to 2000 cycles of the flex test of 4.8.4 the cable shall meet the
requirements of 3.2.1 dc resistance, 3.2.2 dielectric strength, and 3.2.3 insulation resistance. In addition,
there shall be not physical damage to the cable. Upon completion the portion of cable tested shall be
discarded.
3.3.5 Impact. After being subjected to 200 cycles of the impact test of 4.8.5, the cable shall meet the
requirements of 3.2.1 dc resistance, 3.2.2 dielectric strength, and 3.2.3 insulation resistance. In addition,
there shall be physical damage to the cable. Upon completion the portion of cable tested shall be
discarded.
3.4 Repairs. No repair splices shall be made in the finished cable as a whole. Repairs made in the
cable components during manufacture shall conform to the following requirements (see 4.9).
3.4.1 Stranded conductor splices. When splices are required in the individual strands, they shall be of
the butt type. A brazed or welded joint shall be the same diameter as the original wire. Dressing of
splices or removal of burrs is acceptable to meet this requirement. Multiple strand splices may be made
in the stranding operation by joining the individual strands provided that the individual strand splices are
spaced a minimum of 1 foot apart. No strands shall be kinked. There shall be no splices or joints in the
conductor as a whole (see 4.9.1.2).
3.4.1.1 Copper strands. Copper strand splices shall be of the butt type, brazed with silver solder (see
4.9.1.1).
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