PRODUCT INTRODUCTION:
With semi-air as insulation,SYKV type polythene cotes root-shaped
medium
radio frequency coaxial cables have the following features,when applied to
telecommunication:
1.Low transmission loss wide working frequency band
2.Light weight,easy to install
3.Stable & reliable electric properties
SYKV type coaxial cables are suit for the transmission system of VHF &
UHF signals in CATV and closed circuit television ,as feed lines of trunk
lines,branch lines and other electronic equipment the system.
SYKV-75 Type Cable Structures Measure
| SYKV-75 | -5 | -7 | -9 | -12 |
| inner conductor (mm) | 1.00 | 1.60 | 2.00 | 2.60 |
| insulation (mm) | 4.80 | 7.25 | 9.00 | 11.50 |
| outer conductor (mm) | 5.80 | 8.30 | 10.10 | 12.60 |
| over jacket (mm) | 7.50 | 10.60 | 12.60 | 15.60 |
| approximate net weight (kg/km) | 43 | 70 | 96 | 145 |
SYKV-75 type cable electric behavior
| SYKV-75 | -5 | -7 | -9 | -12 | ||||
| insulation resistance(M .km) | 5000 | 5000 | 5000 | 5000 | ||||
| dielectric strength (KV) | 1.6 | 1.6 | 1.6 | 1.6 | ||||
| capacitance(PF/m) | 56 | 56 | 56 | 56 | ||||
| impedance( ) | 75 | |||||||
| return
loss (dB) |
VHF | 20 | 20 | 20 | 20 | |||
| UHF | 18 | 18 | 18 | 18 | ||||
| attenuation(+-0.5%) constant (dB/100m) |
50(MHz) | 5.3 | 3.4 | 2.8 | 2.2 | |||
| 200(MHz) | 10.8 | 7.1 | 5.7 | 4.5 | ||||
| 300(MHz) | 13.0 | 8.6 | 7.1 | 5.4 | ||||
| 500(MHz) | 17.0 | 13.2 | 9.3 | 7.5 | ||||
| 550(MHz) | 17.8 | 12.6 | 10.0 | 8.0 | ||||
| 800(MHz) | 22.9 | 15.2 | 12.5 | 10.0 | ||||
| 1000(MHz) | 26.0 | 17.0 | 14.0 | 11.5 | ||||
