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Coax Cables

Click here to go to our main page on microwave connectors

Click here to go to our main page on coax

Click here to go to our page on VSWR

This page will explain some cable and connector terminology and technologies. For those of you with cable questions, a good contact is Ruth Fawson, her company RF Connections sponsors our page on microwave connectors.

Industry standard coax cables

Below is a table the characteristics of many popular coaxial cables. RG cables refer to an ancient MIL spec, where RG refers to "radio guide". These are typically not used beyond a few GHz.

SR cables refer to semi-rigid.

D is the outer diameter of the dielectric, and d is the diameter of the center conductor.

One of these days we'll compile more cable data and offer it as an Excel download. Feel free to contribute!

Cable Type

OD
(inches)

D
(inches)
d
(inches)
Z0
(ohms)
fc
(GHz)
RG-8A
0.405
0.285
0.089
50
14.0
RG-9A
0.420
0.280
0.085
51
14.2
RG-58A
0.195
0.116
0.031
50
35.3
RG-59A
0.242
0.146
0.032
75
30.5
RG-62A
0.242
0.146
0.025
93
32.2
RG-174
0.100
0.060
0.019
50
65.6
RG-196
0.080
0.034
0.012
50
112
RG-214
0.360
0.285
0.087
50
13.9
RG-223
0.216
0.113
0.037
50
34.6
SR-085
0.085
0.066
.0201
50
60.2
SR-141
0.141
0.1175
0.0359
50
33.8
SR-250
0.250
0.210
0.0641
50
18.9

Some specialty topics we hope to deal with soon:

Test equipment cables

High performance antenna cables

Heliax cables

Low loss cable

High-end systems cables

Semi-rigid, semi-flex, hard-line

High temperature cables

Delay lines

Author : Unknown Editor

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