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Overview of LMR400

Times Microwave's LMR-400 is designed for adaptability, low loss, RF shielding, and wearability. The LMR-400 has the narrowest bend radius of any cable of comparable size and performance due to its cable architecture. The cable has the lowest loss of any comparable cable. This cable offers 90 dB of RF shielding and is ideal for EMI-prone environments. The LMR-400 is suitable for both indoor and outdoor use. Use Times Microwave's LMR-400 cable for any application that necessitates a low-loss, conveniently routed RF cable (e.g. WLL, GPS, LMR, WLAN, WISP, WiMax, SCADA, Mobile Antennas). The LMR-400 cable can be used in place of an RG-8 cable.

 

Overview of LMR400’s Specifications

  • LMR400 is a 50 Ohm coaxial cable that is structurally and materially similar to RG58 but has a 2.74mm Dia Inner Conductor.

  • The Inner Conductor of the LMR400 is a solid bare copper-covered steel (BCCS).

  • LMR400 is a coaxial cable with two shields. Aluminum tape is used for the outer shield, while tinned copper is used for the Overall Braid.

 

 

LMR400 Coaxial Cable Structure Figure

LMR400 Features

  • Priced Per Foot

  • Cable Type: LMR-400

  • Impedance: 50 ohm

  • Center Conductor: Bare Copper Covered Aluminum (BCCAI)

  • Jacket: Polyethylene (PE)

  • Outer Diameter: .405 inch

  • Indoor/Outdoor Rated

  • Drop-in replacement for RG-8

  • Attenuation @ 900 MHz/100 ft: 3.9dB/100ft

  • Attenuation @ 2.4 GHz/100 ft: 6.65dB/100ft

  • Any application (e.g. WLL, GPS, LMR, WLAN, WISP, WiMax, SCADA, Mobile Antennas) requiring an easily routed, low loss RF cable

  • Max Continuous Length: 1000 FT

Specifications

Amphenol Times Microwave Systems LMR-400 technical specifications, attributes, parameters and parts with similar specifications to Amphenol Times Microwave Systems LMR-400.

Attribute Value
Factory Lead Time 6 Weeks
Mount Cable
Dielectric Material Foam Polyethylene (FPE)
Conductor Material Aluminum, Copper Coated
Jacket (Insulation) Material Polyethylene (PE)
Shield Material Aluminum; Copper, Tinned
Cable Types Coaxial
Insulation Materials PE
Operating Temperature -40°C~85°C
Published 2012
Part Status Active
Moisture Sensitivity Level (MSL) 1 (Unlimited)
Max Operating Temperature 85°C
Min Operating Temperature -40°C
Attribute Value
Color Black
Capacitance 78.4pF
Impedance 50Ohms
Jacket Color Black
Conductor Strand Solid
Jacket (Insulation) Diameter 0.405 (10.29mm)
Shield Type Braid
Outside Diameter 10.29 mm
Dielectric Diameter 0.285 (7.24mm)
VoP, Velocity of Propagation 84
Length 500.0' 152.40m
REACH SVHC Unknown
RoHS Status RoHS Compliant

LMR400 Electrical Specifications

LMR400 Electrical Specifications

Performance Property Units US (metric)
Velocity of Propagation % 85  
Dielectric Constant  NA 1.38  
Time Delay nS/ft (nS/m) 1.2 -3.92
Impedance ohms 50  
Capacitance pF/ft (pF/m) 23.9 -78.4
Inductance  uH/ft (uH/m) 0.06 -0.2
Shielding Effectiveness dB >90  
DC Resistance
Inner Conductor ohms/1000ft (/km) 1.39 -4.6
Outer Conductor  ohms/1000ft (/km) 1.65 -5.4
Voltage Withstand Volts DC 2500  
Jacket Spark Volts RMS 8000  
Peak Power kW 16  

 

 

LMR400 Environmental Specifications

Performance Property °F °C
Installation Temperature Range —40/+185 —40/+85
Storage Temperature Range  —94/+185 —70/+85
Operating Temperature Range —40/+185 —40/+85

LMR400 Attentuation VS Frenquency

LMR400 Applications

  • Wireless communication systems

  • Drop-in replacement for RG8/9913 air-dielectric type cable

  • Short antenna

  • Feeder runs

  • Easily routed, low loss RF cable.

 

LMR400 Manufacturer

Times Microwave Systems is a leader in coaxial transmission line technology and production. They provide a broad range of RF and microwave transmission line solutions for military, aerospace, wireless communications, and industrial applications. Their engineering expertise and range of manufacturing capabilities are highly regarded in the industry. With production facilities in the US and China, they can address both specialized applications with extremely demanding performance requirements and high volume commercial applications at frequencies from a few kHz to 110 GHz. As an Amphenol company since 2009, Times Microwave Systems has access to the resources of one of the largest manufacturers of interconnect products in the world. Amphenol Corporation designs manufacture and markets electrical, electronic, and fiber-optic connectors, interconnect systems, and coaxial and specialty cable.

 

Datasheet PDF

Documents

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Frequently Asked Questions

FAQ

What is use of LMR-400 cable?
The LMR-400 coaxial cable is ideal for high-power HF applications or VHF/UHF applications. It is quite rigid due to its solid core conductor. The LMR 400 standard is a UV Resistant Polyethylene jacketed cable that has a 20-year outdoor life.
Is LMR400 waterproof?
LMR400 is the same as ordinary LMR with the added benefit of being waterproof. If the jacket is mistakenly damaged during installation or in the future, the waterproofing compound added in and around the foil/braid ensures continued reliable service.
What is better than LMR400?
RG-8, RG 213, and RG 214 coaxial cables are the same physical size as LMR-400, but their attenuation is up to 40% higher and their RF shielding performance is much worse.
Is LMR400 flexible?
The flexible L-com Microwave LMR-400 coax cable has a 50 Ohm impedance and is made by L-com Microwave. The LMR-400 is a low-loss flexible 50 Ohm coax cable with a 0.405-inch diameter and a Black PE jacket.
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