RG-8 is a type of RF coaxial cable commonly used in VHF/UHF applications such as ham radio or CB radio installations. It is characterised by its large diameter, good shielding and power handling, and low signal loss over distance, making it ideal for long-range transmissions. However, its size can also be a drawback as it is less flexible and more difficult to install in tight spaces compared to smaller cables like RG-58. While RG-8 offers superior performance in terms of signal strength and range, its practicality and cost-effectiveness must be considered in the context of the specific application.

RG8 coaxial cable layers

RF Specification

Min. Frequency
0 GHz
Max. Frequency
6 GHz
Shielding Effectiveness
> 90 dB
Capacitance
78.4 pF/m
RF Operating Voltage
4000 Vrms
Impedance
50 Ω
Velocity
85%
Attenuation Table
Frequency Attenuation
1000 MHz
0.2 dB/m

Physical Specification

Colour
Black
Min. Bend Radius Dynamic
101.6 mm
Min. Operating Temperature
-40 °C
Max. Operating Temperature
85 °C
Weight (g/m)
90 g
Cable Layers
Layer Diameter Materials
Inner Conductor
2.74 mm
Dielectric
7.24 mm
Outer Conductor
7.34 mm
Outer Conductor
8.13 mm
Outer Jacket
10.16 mm