What are RG215 Coaxial Cables?

1 Answer
Can you answer this question?

- everything RF

Jan 23, 2023

RG215 Coaxial Cables are a type of cable that forms an essential component in many electronic systems and networking installation applications. They offer excellent signal integrity and low signal loss, making them suitable for long-haul communication links. A high degree of durability and flexible design makes them ideal for both indoor and outdoor scenarios.


The RG215/U is a 50-ohm coaxial cable with an overall diameter of 0.463 inches and a voltage rating of up to 5000 Vrms. It has an internal bare copper conductor with 7-stranding construction (carrying the electrical signal), which is enclosed by an insulation layer made of Polyethylene (PE). The insulation layer is then completely enclosed by 1 Bare Copper Braid Shields that form the outer conductor and also provide shielding against electromagnetic interference (EMI). The shield layer is then covered by a layer- called a jacket - made of Polyvinyl Chloride (PVC). The jacket protects the cable core from mechanical, moisture, and chemical issues. Finally, the structure is covered with an outermost layer-called armor. The armor is made of an aluminum braid and offers extra mechanical protection to the cable. 

The RG215/U cable exhibits capacitance of approximately 30.8 pF/ft (101.3 pF/m), signal attenuation of around 5.5 dB/100 ft at 400 MHz (signal attenuation of the cable depending on the frequency), and has a velocity of propagation of 66%. It has a center 7-stranding conductor design measuring 0.0888 inches (2.25 mm) in diameter and an insulation layer measuring 0.285 inches (7.2 mm) in diameter. This cable is ideal for high-frequency transmission, especially for transmitters and receivers, computers, radio, and TV transmissions. It has an operating temperature of -40˚C to + 80˚C.

Key Specifications of RG215/U Coaxial Cables


Typical Value

Overall Diameter (inch)


Characteristic Impedance (Zo)

50 ohms

Maximum Voltage Rating (RMS)

5000 V

Cable Capacitance (pF/ft)


Attenuation (dB/100 ft , @ 400 MHz)



Polyethylene (PE)

Click here to view a list of coaxial cables on everything RF.