TV COAXIAL CABLE
DIGITAL RECEPTION
SCREENING ATTENUATION EN 50117 STANDARD
CLASS A = >85 dB ->75 dB ->65 dB
|
CONDUCTOR |
DIELECTRIC |
SCREEN |
SHEATH |
ELECTRICAL PROPERTIES |
ATTENUATIONS |
STRUCTURAL RETURN |
SCREENING |
WEIGHT |
|||||||||||||||||||||||||||
|
IMPEDANCE |
VELOCITY |
CAPACITANCE |
dB/100 m. ( 20 °C ) |
LOSS dB |
EFFECTIVENESS |
COPPER |
ALU |
TOTAL |
|||||||||||||||||||||||||||
|
TYPE |
ø MM |
TYPE |
ø MM |
TYPE |
COVER. |
TYPE |
COVER. |
TYPE |
ø MM |
RATIO |
50 |
470 |
862 |
1750 |
2150 |
2400 |
3000 |
30 ÷ 470 |
470 ÷ 862 |
862 ÷ 2150 |
2150 ÷ 3000 |
5 ÷ 30 |
30÷ 1000 |
1000÷ 2000 |
2000 ÷ 3000 |
KG./KM. |
|||||||||
|
Ω |
% |
pF/m |
MHz |
MHz |
MHz |
||||||||||||||||||||||||||||||
|
CU |
0,80 |
PEG |
3,50 |
LTA |
100% |
ALL |
87% |
PVC2 |
5,30 |
75 |
84% |
53 |
5,1 |
17,1 |
23,4 |
33,9 |
38,8 |
41,6 |
47,7 |
>32 |
>29 |
>26 |
>21 |
<5 |
>85 |
>75 |
>65 |
4,5 |
5,5 |
25,8 |
|||||
|
CU |
0,80 |
PEG |
3,65 |
LTA |
100% |
CS |
72% |
PVC2 |
5,30 |
75 |
84% |
53 |
5,1 |
16,7 |
22,8 |
33,2 |
38,0 |
40,7 |
46,7 |
>29 |
>27 |
>24 |
>21 |
<5 |
>85 |
>75 |
>65 |
12,9 |
31,3 |
||||||
|
CU |
0,80 |
PEG |
3,65 |
LTA |
100% |
ALL |
52% |
PVC2 |
6,00 |
75 |
84% |
53 |
5,1 |
16,7 |
22,8 |
33,2 |
38,0 |
40,7 |
46,7 |
>29 |
>27 |
>24 |
>21 |
<5 |
>85 |
>75 |
>65 |
4,5 |
2,8 |
32,5 |
|||||
|
CU |
1,13 |
PEG |
4,80 |
LTA |
100% |
CS |
73% |
PVC2 |
6,60 |
75 |
84% |
53 |
3,7 |
12,0 |
16,7 |
25,3 |
28,5 |
30,5 |
35,0 |
>31 |
>30 |
>27 |
>25 |
<5 |
>85 |
>75 |
>65 |
20,1 |
46,0 |
||||||
Legend
|
CU |
Plain copper |
LTA |
Aluminium+polyester+aluminium tape |
|
CS |
Tinned copper |
PEG |
Gas injected SKIN-FOAM-SKIN polyethylene |
|
ALL |
Aluminium |
PVC 2 |
Polyvinyl - chloride non-contaminating |