Cavi coassiali - Coax cable
STANDARD CABLE TYPES
Most coaxial cables have a characteristic impedance of either 50 or 75 ohms. The RF industry uses standard type-names for coaxial cables. The U.S military uses the RG-# or RG-#/U format (probably
for "radio grade, universal", but other interpretations exist). For example:
Detailed comparison of typical coaxial cables
| Type | RG-316 | RG-174 | RG-58/U | RG-59 | RG-213/UBX | RG-213 FOAM | AIRCELL 7 |
BELDEN H-155 |
BELDEN H-500 |
__ | |
| Impedance | 50 | 50 | 50 | 75 | 50 | 50 | 50 | 50 | 50 | Ohm | |
| Outer diameter | 2,6 | 2,6 | 5,8 | 6,2 | 10,3 | 10,3 | 7,3 | 5,4 | 9,8 | mm | |
| Loss at | 30 MHz | 18 | 20 | 9,0 | 6,0 | 1,97 | 3,7 | __ | 3,4 | 1,95 | dB/100m |
| 144 MHz | 32 | 34 | 19 | 13,5 | 8,5 | 4,94 | 7,9 | 11,2 | 4,9 | dB/100m | |
| 432 MHz | 60 | 70 | 33 | 23 | 15,8 | 9,3 | 14,1 | 19,8 | 9,3 | dB/100m | |
| 1296 MHz | 100 | 110 | 64,5 | __ | 28 | 18,77 | 26,1 | 34,9 | 16,8 | dB/100m | |
| 2320 MHz | 140 | 175 | __ | __ | __ | 23,7 | 39 | 24,5 | dB/100m | ||
| Velocity factor | 0,7 | 0,66 | 0,66 | __ | 0,66 | 0,8 | 0,83 | 0,79 | 0,81 | __ | |
| Max. load at | 10 MHz | 900 | 200 | __ | __ | __ | 2000 | 2960 | 550 | 6450 | W |
| 145 MHz | 280 | 9 | __ | __ | __ | 1000 | 1000 | 240 | 1000 | W | |
| 1000 MHz | 120 | 30 | __ | __ | __ | 120 | 190 | 49 | 560 | W | |
Additional types of coaxial cable
| Type | Diam. |
Bending radius |
Imp. | Vel. | Kg/100m | pF/m | 10 | 14 | 28 | 50 | 100 | 144 | 435 | 1296 | 2400 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Aircell 7 |
7.3
|
25
|
50
|
0.83
|
7.2
|
74
|
|
3.4
|
3.7
|
4.8
|
6.6
|
7.9
|
14.0
|
26.1
|
38.0
|
| Aircom Plus |
10.8
|
55
|
50
|
0.85
|
15.0
|
84
|
0.9
|
__ |
__ |
|
3.3
|
4.5
|
8.2
|
14.5
|
23.0
|
| H-2000 Flex |
10.3
|
50
|
50
|
0.83
|
14.0
|
80
|
|
1.4
|
2.0
|
2.7
|
3.9
|
4.8
|
8.5
|
15.7
|
23.0
|
| H-1000 |
10.3
|
75
|
50
|
0.83
|
14.0
|
80
|
|
1.4
|
2.0
|
2.7
|
3.9
|
4.8
|
8.5
|
15.7
|
23.0
|
| H-500 |
9.8
|
75
|
50
|
0.81
|
13.5
|
82
|
1.3
|
__ |
__
|
2.9
|
4.1
|
__ |
9.3
|
16.8
|
24.5
|
| H-100 |
9.8
|
__
|
50
|
0.84
|
__
|
80
|
|
__
|
__
|
__ |
4.5
|
__ |
__ |
__ |
__
|
| H-43 |
9.8
|
100
|
75
|
0.85
|
9.1
|
52
|
1.2
|
__
|
__ |
2.5
|
3.7
|
__
|
8.0
|
14.3
|
23.7
|
| LCF 12-50 |
16.2
|
70
|
50
|
?
|
22
|
?
|
0.67
|
__
|
< 1.17
|
__ |
2.16
|
< 3
|
< 4.7
|
< 9
|
< 13
|
| LCF 58-50 |
21.4
|
90
|
50
|
?
|
37
|
?
|
0.5
|
__ |
< 0.88
|
__ |
1.64
|
< 2.2
|
< 3.5
|
< 7
|
< 10
|
| LCF 78-50 |
28
|
120
|
50
|
?
|
53
|
?
|
0.35
|
|
< 0.62
|
__ |
1.15
|
< 1.6
|
< 2.5
|
< 5
|
< 7
|
| RG-223 |
5.4
|
25
|
50
|
0.66
|
6.0
|
101
|
|
6.1
|
7.9
|
11.0
|
15.0
|
17.6
|
__ |
__ |
__ |
| RG-213U |
10.3
|
110
|
50
|
0.66
|
15.5
|
101
|
2.2
|
|
3.1
|
4.4
|
6.2
|
7.9
|
15.0
|
27.5
|
47.0
|
| RG-174U |
2.8
|
15
|
50
|
0.66
|
__
|
101
|
__ |
__ |
|
|
30.9
|
__
|
__
|
__
|
__
|
| RG-59 |
6.15
|
30
|
75
|
0.66
|
5.7
|
67
|
__ |
__
|
|
|
12.0
|
__ |
25.0
|
33.6
|
__
|
| RG-58CU |
5.0
|
30
|
50
|
0.66
|
4.0
|
101
|
__ |
6.2
|
8.0
|
11.0
|
15.6
|
17.8
|
33.0
|
65.0
|
100.0
|
| RG-58 others |
4.9
|
32
|
50
|
0.78
|
3.2
|
82
|
__ |
__ |
__ |
8.3
|
11.0
|
__
|
23.0
|
44.8
|
__
|
| RG-11 |
10.3
|
50
|
75
|
0.66
|
13.9
|
67
|
__ |
__
|
__ |
4.6
|
6.9
|
__ |
18.0
|
30.0
|
__
|