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Features & Advantages
1) Minimun loss in signal quality : better reception
2) Higher band width : larger network expansion,100 plus
channels
3) Low attenuation value : less electromagnetic interference
4) Minimum structural return loss
5) Moisture proof : Ideal for tropical conditions
Polycab, one of the leading
Cable manufacturer of the country, now introduces Co-axial
Cables for Cable TV Network. The Company's most modern
plant at Daman, aided with intelligent R&D efforts
and rigorous quality measures has produced co-axial cables
that's technologically advanced and unrivalled. Its ideal
combination of electrical and physical properties makes
it the preferred choice for a variety of application in
CATV network by public and private operators in India
and abroad alike. The center conductor is made of electrolytic
grade solid copper free from all impurities and deformities
to ensure better signal transmission. The conductor is
insulated with foam dielectric made of imported polythylene
injected with nitrogen gas, which is superior and also
environment-friendly than chemical foam. The double screen
of special composite type bonded aluminium foil and special
grade aluminium alloy braiding of 60% coverage ensures
low loss in signal quality, additional mechanical strength
and resistance to oxide formation in tropical weather
condition. The specially designed in-house PVC compound
used in the jacketing, is uv and abrasion resistant.
Polycab co-axial cables
are fully tested for all parameters by computerised analyser.Co-axial
cable with steel wire armouring can also be supplied for
underground application. Also under production are RG
59F, RG 58, RG 213, RG 217, RG 224 etc.
Construction
Parameters
|
Cable
Type
RG 11F RG6F
|
Center Conductor
Nom. Dia. (mm)
|
Solid bare copper
1.63
|
Solid bare copper
1.02
|
Dielectric
Nom. Dia. (mm)
|
Foam PE
7.11
|
Foam PE
4.57
|
Outer Conductor
1st Shield
2nd Shield
Min. Coverage (%)
|
Al-Foil Bonded
Al-Alloy Braiding
60
|
Al-Foil Bonded
Al-Alloy Braiding
60
|
Jacket
Nom. Dia. (mm)
|
PVC Black/White
10.30
|
PVC Black/White
7.25
|
| Bending 'radius (mm)
|
70 |
60 |
Electrical
Parameters
|
Cable
Type
RG 11F RG 6F
|
Center Conductor
(Max. resistance at 20¡)
|
0.85 ohm/100 mtr.
|
2.14 ohm/100mtr. |
| Nom. Capacitance (PF/Mtrs.)
|
53 ± 3 |
53 ± 3 |
Characteristics
Impedance (Ohms)
|
75 ± 3 |
75 ± 3 |
| Nom. Velocity Ratio
(%) |
85 |
85 |
Attenuation @ 20¡c
(db/100 Mtrs.) at
5 MHz
55 MHz
211 MHz
250 MHz
300 MHz
350 Mhz
400 MHz
450 MHz
550 MHz
600 MHz
750 MHz
865 MHz
1000 MHz
|
1.25 db
3.15 db
6.23 db
6.72 db
7.38 db
7.94 db
8.53 db
9.02 db
9.97 db
10.43 db
11.97 db
13.05 db
14.27 db |
1.95 db
5.20 db
9.50 db
10.50 db
11.50 db
12.45 db
13.30 db
14.35 db
15.70 db
16.45 db
18.35 db
19.95 db
21.45 db |
*all figures are approximate presentation and may show variation
under different conditions.
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