MIL-DTL-17/129E
Engineering information:
Continuous working voltage: 3,000 V rms, maximum.
Operating frequency: 18 GHz, maximum.
Velocity of propagation: 69.5 percent, nominal.
Power rating: See figure 2.
Operating temperature range: -40ºC to + 90ºC.
Inner conductor properties:
DC resistance (maximum at 20ºC): .257 ohms per 100 feet.
Elongation: 25 percent, minimum, per 10-inch specimen.
Engineering notes: This cable is generally useful in critical RF performance applications (see
connector series TNC in accordance with MIL-PRF-39012). This cable is generally manufactured in
20-foot lengths. Different lengths are available.
REQUIREMENTS:
Dimensions, configuration, and descriptions: See figure 1 and table I.
Environmental and mechanical:
Eccentricity: 7.5 percent, maximum.
Adhesion of conductors:
Inner conductor to core: 4 pounds minimum; 100 pounds, maximum.
Outer conductor to core: 4 pounds minimum.
Aging stability: Not applicable.
Stress crack resistance: Not applicable.
Outer conductor integrity: Four specimens, approximately 2 feet long, shall be cut from the
sample unit. The specimens shall be suspended in a heat chamber without touching one another or the
walls of the chamber and conditioned for 1 hour 30 minutes minimum at the specified maximum operating
temperature ±5º C. Heated air shall be circulated so as to maintain a uniform test temperature. After the
conditioning period, the specimens shall be removed from the heat chamber and conditioned at room
ambient temperature for 4 hours minimum. The specimen shall then have one end immersed into molten
solder to a depth of 0.5 inch minimum for 15 seconds minimum. The molten solder temperature shall be
+230°C minimum. After the conditioning period, the specimens shall be removed from the molten solder
and conditioned at room ambient temperature for 1 hour minimum. Examine the specimens for cracks,
flaws, or other damage in the outer conductor material.
2