New LMR-400 Flexible Low Loss Communications Coax has been released by Richardson Electronics. The new LMR-400 Flexible Low Loss Communications Coax is ideal for:
Drop-in replacement for RG-8/9913 Air-Dielectric type Cable
Jumper Assemblies in Wireless Communications Systems
Short Antenna Feeder runs
Any application (e.g. WLL, GPS, LMR) requiring an easily routed, low loss RF cable
LMR standard is a UV Resistant Polyethylene jacketed cable designed for 20-year service outdoor use. The bending and handling characteristics are significantly better than air-dielectric and corrugated hard-line cables.
LMR- DB is identical to standard LMR plus has the advantage of being watertight. The addition of waterproofing compound in and around the foil/braid insures continuous reliable service should the jacket be inadvertently damaged during installation or in the future.
LMR- FR is a non-halogen (non-toxic), low smoke, fire retardant cable designed for in- building runs that can be routed anywhere except air handling plenums. LMR- FR has a UL/NEC & CSA rating of ‘CMR/MPR’ and ‘FT4’ respectively.
LMR- FR-PVC is a general-purpose indoor cable and has a UL/NEC & CSA rating of ‘CMR/MPR’ and ‘FT4’ respectively. It is less expensive than LMR-FR, however it emits toxic fumes (HCL) and greater smoke density when burned.
LMR- PVC is designed for low loss general-purpose indoor/outdoor applications and is somewhat more flexible than the standard polyethylene jacketed LMR.
LMR- PVC-W is a white-jacketed version of LMR- PVC for marine and other indoor/outdoor applications where color compatibility is desired.
Flexibility and bendability are hallmarks of the LMR- 400 cable design. The flexible outer conductor enables the tightest bend radius available for any cable of similar size and performance.
Low Loss is another hallmark feature of LMR-400. Size for size LMR has the lowest loss of any flexible cable and comparable loss to semirigid hard-line cables.
RF Shielding is 50 dB greater than typical single shielded coax (40 dB). The multi-ply bonded foil outer conductor is rated conservatively at > 90 dB (i.e. >180 dB between two adjacent cables).
Weatherability: LMR-400 cables designed for outdoor exposure incorporate the best materials for UV resistance and have life expectancy in excess of 20 years.
Connectors: A wide variety of connectors are available for LMR-400 cable, including all common interface types, reverse polarity, and a choice of solder or non-solder center pins. Most LMR connectors employ crimp outer attachment using standard hex crimp sizes.
Cable Assemblies: All LMR-400 cable types are available as pre-terminated cable assemblies.