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
__