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Harbour Braided Wire Separator

TRX (Triaxial) Coaxial Cable

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Isolation of the shields and improved shielding

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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Attenuation Calculator
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Download our latest RF Microwave Coaxial Cable catalog (PDF)


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Browse our latest RF Microwave Coaxial Cable technical documents

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Electrical Wiring Interconnect Systems Applications in commercial aircraft.

Attenuation Calculator

Although typical and maximum attenuation values at discrete frequencies may be found in Harbour's online catalog, this Attenuator Calculator makes it easy to compare multiple items at any operating frequency. Just type a frequency in MHz (for instance 18 GHz = 18,000 MHz) to calculate and compare typical attenuation values.

Cable Outer
Maximum Frequency
(dB / 100 ft.)
LL120 .120 18,000
LL160 .160 18,000
LL142 .195 18,000
LL235 .235 18,000
LL335/LL335i .335/.300 18,000
LL142STR .195 18,000
LL270STR .270 18,000
LL450STR .450 13,000
LL480STR .480 11,000
SB316 .098 18,000
SB142/SB142i .195/.172 18,000
SB400 .195 18,000
SB304 .280 18,000
SB393 .390 11,000
SS405 .104 18,000
SS402 .163 18,000
M17/93-RG178 .071 3,000
M17/113-RG316 .098 3,000
M17/128-RG400 .195 12,400
M17/60-RG142 .195 12,400
M17/127-RG393 .390 11,000
SFL405-105Flex .115 18,000
SFL402-105Flex .180 18,000
LLS160 0.160 18,000
LLS160-40GHz 0.160 40,000
LLS195 0.195 18,000
LLS195STR 0.195 18,000
LLS290 0.290 18,000

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Item ID167