| Wire and Cable Information |
|
|
Attenuation in db per 100 feet (On 27MHz) |
Velocity Factor |
Description |
|
RG-8 |
1.15 dB |
.66 |
50 Ohm
coax |
|
RG-59 |
2.0 dB |
.66 |
75 Ohm
coax |
|
RG-8/U Foam |
0.85 dB |
.80 |
50 Ohm
coax, Foam Dielectric |
|
RG-59/U Foam |
1.5 dB |
.79 |
75 Ohm
coax, Foam Dielectric |
|
Belden 9913 |
0.7 dB |
.84 |
Premium
50 Ohm coax |
|
1/2" Hardline |
0.35 dB |
.81 |
Special
coax, expensive! |
|
RG-8X (Mini-8) |
1.2 dB |
.78 |
Small 50
Ohm coax. Perferred over RG-58. Recommended for mobile installations. |
|
RG-58 |
2.35 dB |
.66 |
50 Ohm
coax |
|
RG-213 |
1.35 dB |
.66 |
50 Ohm
coax. |
|
RG-11/U Foam |
0.85 dB |
.80 |
75 Ohm
coax. |
|
RG-11/U |
1.35 dB |
.66 |
75 Ohm
coax. |
|
Wire |
- |
.975 |
Insulated, Stranded
wire. AWG does not seem to effect the velocity factor. |
|
Decibel |
Ratio |
|
0 |
1.0 |
|
1 |
1.26 |
|
2 |
1.59 |
|
3 |
2.0 |
|
4 |
2.5 |
|
5 |
3.2 |
|
6 |
4.0 |
|
7 |
5.0 |
|
8 |
6.3 |
|
9 |
7.9 |
|
10 |
10.0 |
|
11 |
12.6 |
|
12 |
15.9 |
|
13 |
20 |
|
14 |
25.1 |
|
15 |
31.6 |
|
16 |
39.8 |
|
17 |
50.1 |
|
18 |
63.1 |
|
19 |
79.4 |
|
20 |
102 |
|
30 |
103 |
|
40 |
104 |
|
60 |
105 |
|
70 |
106 |
|
|
COAXIAL CABLE |
Velocity Factor |
|
RG-8 |
.66 |
|
LMR-400 |
.85 |
|
RG-8X |
.84 |
|
RG-11 |
.75 |
|
RG-58 |
.66 |
|
LMR-195 |
.83 |
|
RG-59 |
.82 |
|
RG-62 |
.84 |
|
RG-174 |
.66 |
|
RG-213 |
.66 |
|
RG-214 |
.66 |
|
RG-217 |
.66 |
|
RG-218 |
.66 |
|
RG-316 |
.79 |
|
RG-400 |
.695 |
|
LMR-500 |
.85 |
|
LMR-600 |
.86 |
|
1/2 HARD |
.81 |
|
7/8 HARD |
.81 |
|
LDF all versions |
.88 |
|
