MIL-DTL-17 coaxial cables - including m17/176-00002 twinaxial data bus cable harbour industries is a qpl approved manufacturer of high temperature, high performance coaxial cables supplied in exact accordance with the MIL-DTL-17 specifcation. the information referenced has been taken from the MIL-DTL-17 slant sheets which defne complete physical and electrical characteristics for each MIL-DTL-17 part number including dimensional parameters, dielectric materials, shield constructions, vswr, and maximum attenuation over various frequency ranges. for complete individual slant sheets, see the defense supply center columbus (dscc) link in the industry links section of harbours website. the importance of vswr sweep testing when selecting a 50 ohm coaxial cable, constructions with vswr requirements are highly recommended. manufacturing and sweep testing cables with concern for vswr ensures a quality cable free of spikes over the frequency range referenced on the slant sheet. precision ptfe dielectrics used all of the ptfe dielectric coax cables listed are high temperature, high performance constructions exhibiting high dielectric strength and low capacitance in proportion to the cable s dielectric constant. harbour manufactures all ptfe dielectric cable constructions with tolerances tighter than the MIL-DTL-17 specifcation to ensure uniformity of electrical characteristics, especially impedance, attenuation, and vswr. constructions with ptfe tape wrapped jackets harbour manufactures ptfe tape wrapped cables - specifcally rg187 a/u, rg188 a/u, rg195 a/u, and rg196 a/u - in accordance with a previous revision of the MIL-DTL-17 specifcation. these constructions can withstand operating temperatures up to 250 o versus 200o c for fep jacketed cables. ptfe tape wrapped cables are generally more fexible than their fep jacketed counterpart. alternative 250o constructions are also available with pfa jackets. m17 part center conductor dielectric diameter shield shield diameter jacket overall diameter bend radius weight (lbs/mft) comments m17/60-rg142 .037 sccs .116 spc (2) .160" fep .195 1.0 43.0 m17/93-rg178 .0120 (7/.004)sccs .033 spc .051" fep .071 0.4 6.3 m17/94-rg179 .0120 (7/.004)sccs .063 spc .080" fep .100 0.4 10.8 m17/95-rg180 .0120 (7/.004)sccs .102 spc .118" fep .141 0.7 19.8 m17/111-rg303 .037 sccs .116 spc .136" fep .170 0.9 31.0 m17/112-rg304 .059 sccs .185 spc (2) .240" fep .280 1.4 94.0 m17/113-rg316 .0201 (7/.0067)sccs .060 spc .075" fep .098 0.5 12.2 m17/127-rg393 .094 (7/.0312) spc .285 spc (2) .314" fep .390 2.0 165.0 m17/128-rg400 .0384 (19/.008) spc .116 spc (2) .156" fep .195 1.0 50.0 m17/131-rg403 .0120 (7/.004)sccs .033 spc (2) .090" fep (2) .116 0.6 15.0 triaxial rg-178 m17/152-00001 .0201 (7/.0067)sccs .060 spc (2) .091" fep .114 0.6 18.5 double shield rg-316 m17/176-00002 .0235 (19/.005)spa(2) .042 spa .100" pfa .129 0.6 18.0 twinax rg187 a/u .0120 (7/.004)sccs .063 spc .079" ptfe .100 0.5 10.0 tape wrapped jacket rg188 a/u .0201 (7/.0067)sccs .060 spc .080" ptfe .100 0.5 11.0 tape wrapped jacket rg195 a/u .0129 (7/.004)sccs .102 spc .117" ptfe .141 0.7 18.0 tape wrapped jacket rg196 a/u .0120 (7/.004)sccs .034 spc .050" ptfe .067 0.4 6.0 tape wrapped jacket
attenuation (db/100 ft) m17 part impedance (ohms) capacitance (pf/ft) max voltage 100 mhz typ/max 400 mhz typ/max 1 ghz typ/max 2.4 ghz typ/max 5 ghz typ/max 10 ghz typ/max max frequency (ghz) m17/60-rg142 50 +/-2 29.4 1900 3.8 / 4.4 8.1 / 9.3 13.7 / 23.3 / 25.0 37.4 / 41.8 60.0 / 12.4 m17/93-rg178 50 +/-2 29.4 1000 14.7 / 16.0 30.2 / 33.0 48.9 / 78.7 / 83.3 m17/94-rg179 75 +/-3 19.4 1200 15.8 / 21.0 m17/95-rg180 95 +/-5 17.4 1500 5.7 / 6.6 11.7 / 17.4 19.2 / m17/111-rg303 50 +/-2 29.4 1900 4.0 / 4.4 8.1 / 9.3 13.4 / m17/112-rg304 50 +/-2 29.4 3000 2.4 / 2.7 5.8 / 6.4 10.0 / 17.6 / 19.6 25.4 / 28.2 8.0 m17/113-rg316 50 +/-2 29.4 1200 7.8 / 11.0 16.0 / 21.0 26.3 / 43.0 / 55.4 3.0 m17/127-rg393 50 +/-2 29.4 1500 2.2 / 2.5 4.6 / 5.0 7.9 / 9.2 13.5 / 14.2 21.9 / 26.8 35.5 / 11.0 m17/128-rg400 50 +/-2 29.4 1900 4.1 / 4.5 8.6 / 10.5 14.2 / 23.6 / 30.2 37.0 / 52.1 57.8 / 12.4 m17/131-rg403 50 +/-2 29.4 1000 33.3 / 37.0 m17/152-00001 50 +/-2 29.4 1200 7.6 / 11.0 16.0 / 21.0 26.2 / 41.2 / 55.4 61.3 / 90.0 / 12.4 m17/176-00002 77 +/-7 19.0 1000 rg187 a/u 75 +/-3 19.4 1200 15.5 / 21.0 rg188 a/u 50 +/-2 29.4 1200 7.6 / 11.0 16.0 / 21.0 26.2 / 41.2 / 55.4 3.0 rg195 a/u 95 +/-5 17.4 1500 11.7 / 17.4 rg196 a/u 50 +/-2 29.4 1000 13.0 / 16.0 27.2 / 33.0 41.7 / 64.0 / 80.0 3.0 MIL-DTL-17 coaxial cables - including m17/176-00002 twinaxial data bus cable ul approvals for many of the MIL-DTL-17 cables listed are available upon request. maximum frequencies are those referenced on individual slant sheets of the MIL-DTL-17 specifcation. no values are given above 400mhz for unswept constructions because MIL-DTL-17 specifcation recommends these cables should not be used above this frequency. the MIL-DTL-17 specification references maximum attenuation values as shown in the above chart, however typical values are substantially lower. for the more popular constructions, the following k factors may be used to calculate typical attenuation at any specific frequency. m17/60-rg142 m17/93-rg178 m17/94-rg179 m17/113-rg316 m17/128-rg400 m17/127-rg393 k1 .355 1.420 .766 .750 .390 .200 k2 0.00245 0.0034 0.00119 0.0026 0.00188 0.00155
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