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  • Unique cable design: The braid configuration and the expanded PTFE dielectrics of the LL cable constructions contribute to lower attenuation levels at higher frequencies, while providing shielding effectiveness levels that exceed those of flexible MIL-C-17 cables. Flat strips of silver plated copper are braided over the dielectric core with an intermediate metallized polyester or polyimide layer, and an outer round wire braid.
  • Improved electrical characteristics: LL cables with expanded PTFE dielectrics exhibit low coefficients of expansion over the entire operating temperature range from -100° C to +250° C. Impedance discontinuities are minimized at the cable- to-connector interface. Higher levels of power can be transmitted because higher temperatures do not affect the cable due to the temperature stability of the tape. Where phase versus temperature requirements are critical, LL cables allow for an approximately 75% lower phase shift and change in propagation time delay due to temperature. Temperature cycling tests have been performed on a number of cables with positive results.
  • Lowest attenuation for any given size: LL coaxial cables, with expanded PTFE dielectrics and strip braid composite configurations, offer attenuation from 20 to 35% below other mil spec cables of comparable size. When size and weight are considerations, LL cables should be considered. The graph below defines maximum attenuation levels for all LL cables referenced on the next page.
  • Technical support available: We continually work with cable assembly houses and connector manufacturers to ensure maximum system reliability. Cable designs take into consideration size and weight constraints, existing connector availability and termination techniques. Sources of supply for connectors operative to 18 GHz may be recommended.
  • Many special constructions available: The chart on the following page outlines just a few designs we have manufactured. Some of the more popular constructions are standard stock items, and many additional cables are available for prototype assemblies. Additional cables not referenced here are available to meet specific customer requirements.
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    Item #

    Center Conductor

    Dielectric Diameter

    Diameter Over Inner Braid

    Diameter Over Outer Braid

    Overall Diameter

    Weight

    LL120 N/A 0.0285 inch Solid N/A 0.080 in N/A 0.086 in N/A 0.108 in N/A 0.120 in N/A 17.00 lb/1000 ft.
    LL142 N/A 0.051 inch Solid N/A 0.145 in N/A 0.152 in N/A 0.174 in N/A 0.195 in N/A 44.0 lb/1000 ft.
    LL235 N/A 0.057 inch Solid N/A 0.160 in N/A 0.170 in N/A 0.191 in N/A 0.235 in N/A 48.0 lb/1000 ft.
    LL393-2 N/A 0.068 inch (7/0.023 inch) N/A 0.185 in N/A 0.195 in N/A 0.220 in N/A 0.270 in N/A 70.0 lb/1000 ft.
    LL335i N/A N/A N/A N/A N/A N/A
    LL450 N/A 0.133 inch (7/0.048 inch) N/A 0.360 in N/A 0.368 in N/A 0.394 in N/A 0.450 in N/A 180.0 lb/1000 ft.
    LL285 N/A 0.089 ± 0.001 in N/A 0.245 ± 0.005 in N/A 0.250 ± 0.005 in N/A 0.264 ± 0.005 in N/A 0.285 ± 0.005 in N/A 74.0 lb/1000 ft.
    LL305 N/A 0.091 ± 0.004 in N/A 0.246 ± 0.005 in N/A 0.256 ± 0.005 in N/A 0.276 ± 0.005 in N/A Max. 0.305 in N/A 74.0 lb/1000 ft.
    LL465 N/A 0.155 ± 0.0015 in N/A 0.405 ± 0.005 in N/A 0.418 ± 0.005 in N/A 0.435 ± 0.005 in N/A 0.465 ± 0.010 in N/A 174.0 lb/1000 ft.
    LLS290 N/A 0.089 ± 0.001 in N/A 0.246 ± 0.005 in N/A 0.252 ± 0.005 in N/A 0.265 ± 0.005 in N/A 0.290 ± 0.010 in N/A 72.0 lb/1000 ft.
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