What are LMR 195 Coaxial Cables?

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- everything RF

Mar 16, 2023

The LMR 195 Coaxial Cable is a type of cable designed to carry radio frequency signals while maintaining low signal attenuation. It also offers resistance against UV radiation and is ideal for use in high frequency signal transmission in wireless communication systems and telecommunication applications.

LMR 195 Coaxial Cable

LMR 195 Coaxial Cable Construction

The LMR 195 is a 50-ohm, low-loss, flexible, double-shielded coaxial cable with an overall diameter of 0.195 inches, developed by Times Microwave Systems, and has a voltage rating of up to 1000 VDC. It has an internal solid bare copper conductor (carrying the electrical signal), which is enclosed by an insulation layer made of Foam Polyethylene (Foam PE). The insulation layer is then completely enclosed by two shield layers. The first shielding layer is made of aluminum tape, and the outer shield is made of a tinned copper braid. The shields form an outer conductor, which also provides protection from electromagnetic interference (EMI). Finally, the structure is covered with an outermost layer - called a jacket - made of Polyethylene (PE).  The jacket protects the cable core from mechanical, moisture, and chemical issues and environmental conditions.

The LMR 195 cable exhibits capacitance of approximately 25.4 pF/ft (83.3 pF/m) and signal attenuation of around 11.1 dB/100 ft at 900 MHz (signal attenuation of the cable depending on the frequency) and has a velocity of propagation of 80 %. It has a center conductor measuring 0.037 inches (0.94 mm) in diameter and an insulation layer measuring 0.110 inches (2.79 mm) in diameter. The double shielding structure of the LMR 195 coax cable offers RF shielding of more than 90 dB. 

The high- performance, flexible, low-loss LMR 195 cable can be used virtually anywhere, either indoors or outdoors. The LMR 195 cable is ideal for use in jumper assemblies in wireless communications systems, short antenna feeder runs, and any application (e.g., WLL, GPS, LMR, WLAN, WISP, WiMAX, SCADA, Mobile Antennas) requiring an easily routed, low loss RF cable and drop-in replacement for RG-58 and RG-142.

Key Specifications of LMR 195 Coaxial Cables


Typical Value

Overall Diameter (inch)


Characteristic Impedance (Zo)

50 ohms

Maximum Voltage Rating (VDC)


Cable Capacitance (pF/ft)


Inductance (µH/ft)


Attenuation (dB/100 ft, @ 900 MHz)



Foam Polyethylene (Foam PE)

Minimum Bend Radius (inch), installation


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