RG8 VS LMR400[FAQ]: Differentiate the differences between them.

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.

Note: LMR® is a registered trademark of Times Microwave Systems.

Pasternack's RG8 product number refers to a flexible RG8 coax cable. The RG8 flexible coax cable from Pasternack is 50 Ohm and features a PE dielectric. Our RG8 coax has a PVC jacket with a thickness of 0.405. (NC). The shield count on RG8 coax is one, and the maximum frequency for this Pasternack wire is one GHz. At 1 GHz, the RG8 coax cable has an attenuation of 8 dB and a maximum power of 190 watts.

Over 40,000 RF, microwave, and millimeter-wave components are made up of Pasternack RG8 coax cables. RG8 cables and other RF components are available for same-day shipping anywhere in the world. Custom RF cable assemblies using RG8 or another coax can be built and shipped the same day as well.

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

RG8 Features

• Conductor: Bare Copper

• Insulation: Solid Low-Density Polyethylene

• Shielding: Bare Copper Shield

• Jacket: PVC (contaminating) Type 1 per MIL-C-17

• Jacket Color: Black

• 12 AWG stranded copper center conductor

• 95% bare copper braid shielding

• PVC Jacket

• 50 Ohm

• UL Listed

• Sold per ft.

• Max Continuous Length: 1000 FT

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.

RG8 Applications

• Carrying radio transmission signals

• Audio control rooms

• Radio stations

• Connections for external radio antennas.

LMR400  Attentuation VS Frequency

RG8 Attentuation VS Frequency

Although LMR400 cable has low loss, it is thicker and less flexible than RG58 or LMR240 cable, making it more difficult to work with. Meanwhile, the impedances of LMR400 and RG8 are both 50 Ohm. The major differences between the LMR400 and RG8 are the attenuation and frequency. The Attenuation at 1 GHz of LMR400 is 4.25 dB, while the Attenuation at 1 GHz of RG8 is 8 dB. Additionally, the maximum frequency of  LMR400 is 6 GHz, while the maximum frequency of RG8 is 1 GHz. What’s more, the maximum operating temperature of LMR400 is 85 deg C, while the maximum operating temperature of RG8 is 80 deg C. LMR-400 was designed to replace low-quality RG-8 wires because it offers greater flexibility, a simpler connection, and the lowest signal loss. In general, the LMR-400 can be utilized in any application where low signal loss is required.

• LMR400 Datasheet

• RG8 Datasheet

• LMR400 VS RG58 Coax Cable[Video]: Which one is better?

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• LMR400 VS LMR300: Which one to choose?

• LMR240 VS LMR400[Video]: Which one is better?

Times Microwave Systems is a pioneer in the development and manufacture of coaxial transmission lines. For military, aerospace, wireless communications, and industrial applications, they offer a wide range of RF and microwave transmission line solutions. In the industry, its engineering competence and range of manufacturing capabilities are well acknowledged. They can serve both specialist applications with extremely demanding performance requirements and high volume commercial applications at frequencies ranging from a few kHz to 110 GHz, thanks to production sites in the United States and China. Since 2009, Times Microwave Systems has had access to the resources of Amphenol, one of the world's largest makers of interconnect components. Amphenol Corporation is a manufacturer of electrical, electronic, and fiber-optic connectors, as well as connection systems and coaxial and specialized cable.