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TRX Triaxial Cable

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MIL-DTL-17 Triaxial Cable Construction

Periodically, isolation of shields in a coaxial cable is an important consideration. Harbour has constructed a number of TRX (Triaxial) cables, expanding the product line offered in the MIL-DTL-17 specification. (Currently, the MIL-DTL-17 specification defines only one triaxial — M17/131-RG403, a triaxial version of M17/93-RG178.) With an existing double braided construction, an interlayer of insulation is used between the two braids. With a single braided cable, an interlayer and a second braid is used. Complete isolation between the braids is realized, in addition to achieving a more effective shield configuration.

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TRX (Triaxial) Cable

Part NumberCenter Conductor 
DiameterDielectric DiameterDiameter Over 
Inner Braid Diameter Over 
InterlayerDiameter Over Outer BraidOverall DiameterImpedance (ohms)
M17/131-RG403.0120 ̋ (7/.0040 ̋).033 ̋.049 ̋.074 ̋.090 ̋.116 ̋50
TRX316.0201 ̋ (7/.0067 ̋).060 ̋.076 ̋.096 ̋.112 ̋.140 ̋50
TRX142.037 ̋ Solid.116 ̋.136 ̋.166 ̋.186 ̋.215 ̋50
TRX400.0384 ̋ (19/.008 ̋).116 ̋.136 ̋.166 ̋.186 ̋.215 ̋50
TRX179.0120 ̋ (7/.0040 ̋).063 ̋.079 ̋.099 ̋.115 ̋.141 ̋75
TRX180.0120 ̋ (7/.0040 ̋).102 ̋.118 ̋.138 ̋.154 ̋.180 ̋95

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Harbour Industries is the global leader in product engineering and manufacturing of high temperature and high-performance cable. Our product and process engineering expertise ensures the highest quality products manufactured to precise customer specifications.


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