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LMR 400 Coax

LMR 400 Coaxial Cable
Flexible Low Loss Coaxial Cable
Communications Cable

LMR 400 Coax Applications:

  • Uses standard connectors (view LMR 400 connectors here)
  • LMR 400 coax is designed for jumper assemblies in wireless communications systems or as a drop-in replacement for RG8/9913 air-dielectric type cable.
  • These coax cables can be found in short antenna feeder runs.
  • LMR 400 coax is suitable for applications that require easily-routed, low loss RF cable (ex. WLL, GPS, LMR, WLAN, WISP, WiMax, SCADA, Mobile Antennas).
  • LMR-400-FR carries a MSHA-P rating for mining operations.
  • Depending on your type of application, LMR 400 coax cables are available for outdoor, outdoor/watertight, indoor-riser (CMR rated cables) or indoor/outdoor use.
  • Click on the part links below for individual LMR 400 specs and more information.

LMR 400 Specs & Construction:

  • Inner Conductor: Solid Bare Copper Coated Aluminum
  • Dielectric: Foam Polyethylene (FPE)
  • Outer Conductor: Aluminum Tape
  • Outer Braid: Tinned Copper
  • Jacket: Specified per part, see chart below

LMR 400 Specs & Ratings:

  • Temperature:
    • Installation: -40°C to 85°C
    • Storage: -70°C to 85°C
    • Operating: -40°C to 85°C
  • Voltage Rating: 2500 volts
  • UL/NEC Type CMR (LMR-400-FR and LMR-400-FR-PVC only)
  • CSA FT4 (LMR-400-FR and LMR-400-FR-PVC only)

LMR 400 Coax Features & Benefits:

  • Flexibility & Bending: LMR 400 coax is designed with a flexible outer conductor, enabling the tightest bend radius of any cable of similar size and performance.
  • Low Loss: Lowest loss of any flexible cable; comparable loss to semirigid hard-line cables
  • RF Shielding: 50 dB greater than a typical single shielded coax (40 dB) - multi-ply bonded foil outer conductor rated conservatively at 90 dB
  • Weatherability: LMR 400 coax is approved for outdoor exposure and is UV resistant. These cables offer a life expectancy of over 20 years.

See chart below and individual LMR 400 specs for full details.

Part Number Jacket MaterialApplicationColor
LMR-400 Polyethylene (PE) Outdoor Black
LMR-400-DB Polyethylene (PE) Outdoor/Watertight Black
LMR-400-FR Flame Retardant Halogen-Free (LSZH) Polyethylene (FRPE) Indoor-Riser Black
LMR-400-FR-PVC Flame-Retardant Polyvinylchloride (FR-PVC) Indoor-Riser Black
LMR-400-PVC Polyvinylchloride (PVC) Indoor/Outdoor Black
LMR-400-PVC-W Polyvinylchloride (PVC) Indoor/Outdoor White