This specification covers the 5C-HFBT Coaxial Cable for connection of devices intended for television reception like a satellite broadcasting of 75 ohms characteristic impedance or related devices.
CONSTRUCTION OF THE 5C-HFBT Coaxial Cable
ITEM |
UNIT |
5C-HFBT |
5C-HFBT-A |
Inner conductor |
Material |
— |
Copper |
ccs |
Diameter |
mm |
1.20 ± 0.03 |
1.02 ± 0.05 |
Insulation |
Material |
— |
Foamed PE |
Foamed PE |
Thickness |
mm |
1.90 ± 0.05 |
1.73 ± 0.05 |
Diameter |
mm |
5.00 ± 0.1 |
4.57 ± 0.1 |
Color |
— |
Natural |
Natural |
Outer conductor |
lst shield |
Material |
— |
Al/mylar tape |
Al/mylar tape |
Thickness |
mm |
0.042 ± 0.003 |
0.051 ± 0.003 |
2nd shield
|
Material |
— |
Tin-coated Annealed Copper (TA) |
Aluminum wire (A) |
Individual wire diameter |
mm |
0.120 ± 0.005 |
0.150 ± 0.01 |
Construction |
Number of wires
per carrier x number of carriers |
6 × 16 |
3 × 16 |
Lay length |
mm |
46 ± 5 |
32 ± 5 |
3rd shield |
Material |
— |
Al/mylar tape |
Al/mylar tape |
Thickness |
mm |
0.025 ± 0.003 |
0.025 ± 0.003 |
Jacket |
Material |
— |
PVC |
PVC |
Color |
— |
Black / White |
Black /White |
Thickness |
mm |
0.90 ± 0.1 |
0.83 ± 0.1 |
Diameter |
mm |
7.40 ± 0.5 |
7.06 ± 0.5 |
ELECTRICAL CHARACTERISTIC of 5C-HFBT Coaxial Cable
ITEM |
UNIT |
5C-HFBT |
5C-HFBT-A |
DC Resistance |
Inner Conductor |
Ω/km |
≤19.24 |
≤100 |
Outer Conductor |
Ω/km |
≤21.35 |
≤44 |
DC Loop |
Ω/km |
≤40.59 |
≤144 |
Insulation Resistance |
MΩ/km |
≥1000 |
≥1000 |
Dielectric Withstand Voltage |
V/min |
AC 1000/1 |
AC 1000/1 |
Capacitance |
pF/km |
52 ± 3 |
52 ± 3 |
Relative Propagation Velocity |
% |
≥83 |
≥83 |
Standing Wave Ratio I |
50~2150MHz
(SC-HFBT)
10~864MHz
(5C-HFBT-A) |
— |
≤1.2 |
≤1.2 |
Impedance |
MEAN |
Ω |
75 ± 3 |
75 ± 3 |
Attenuation
(@ 20°) |
10 MHz |
dB/km (Max.) |
— |
23.8 |
50 MHz |
47.2 |
47.2 |
150 MHz |
77.2 |
77.2 |
250 MHz |
98.9 |
98.9 |
350 MHz |
117.1 |
117.1 |
450 MHz |
137.0 |
137.0 |
750 MHz |
178.0 |
178.0 |
806 MHz |
188.9 |
188.9 |
864 MHz |
195.0 |
195.0 |
950 MHz |
201.8 |
— |
1200 MHz |
244.7 |
— |
1450 MHz |
262.4 |
— |
1800 MHz |
287.3 |
— |
2150 MHz |
315.3 |
— |
Shield Coverage |
% |
≥60
(3 layer shield) |
≥45
(3 layer shield) |
* The of 5C-HFBT Coaxial Cable shield coverage complies with KS C 3326 specification.
ITEM |
UNIT |
SPECIFICATION |
REMARK |
Jacket
(before heat-aged) |
Tensile Strength |
kgf/mm 2 |
≥ 1.02 |
According to
KS C 3004 / clause 19 |
Elongation |
% |
≥200 |
Jacket
(after heat-aged) |
(after heat-aged) |
% |
≥80 |
According to
KS C 3004 / clause 20 |
Elongation |
% |
≥ 80 |
Jacket Shrinkage (100°C/4h) |
— |
≤ 10 |
According to
KS C 3004 / clause 24 |
Cold Bend Test (-20°C/lh) |
— |
No visible crack |
According to KS C 3004 / clause 23 |
Cold Impact Test (-l0°C/2.5 min.) |
— |
No visible crack |
According to
KS C 3004 / clause 25 |
Conductor Discoloration |
— |
No corrosion / discoloration on the inner and outer conductor |
According to
KS C 3004 / clause 25 |
Min. Bending Radius. |
— |
6 X Cable Diameter |
— |
BENDING CHARACTERISTIC
It shall be no visible crack on the jacket and outer conductor by 3 cyclic tests that 180 ° bending
tightly on 20 times size’s cylinder of cable diameter and then 180° bending in the opposite
direction
