SYWLY-75 Serial Cable Structure&Dimension&Electrical Performance SYWVLY-75 -9 -12 -13 -15 Inner Conductor 2. 15+/- 0. 03 2. 77+/- 0. 03 3. 15+/- 0. 03 3. 50+/- 0. 04 Dielectric 9. 00+/-0. 25 11. 50+/-0. 25 13. 00+/-0. 25 15. 00+/-0. 25 Outer conductor 10. 30 12. 80 14. 40 16. 40 Sheath 12. 00 14. 25 15. 90 17. 50 Weight(approx) kg/km 105 144 167 198 Insulation resistance 10000 10000 10000 10000 Core dielecric strength 1. 6 1. 6 1. 6 1. 6 Sheath dielecric strength Spark 8 8 8 8 Soaked water 5 5 5 5 Capacitance 52 52 52 52 Characteristic impedance 75+/-2. 0 75+/-2. 0 75+/-2. 0 75+/-2. 0 Structural echo loss VHF 20 20 20 20 UHF 18 18 18 18 Attenuation Constant 50MHz 2.4 1.9 1.7 1.5 DB/100mmax 200MHz 5.0 3.9 3.4 3.1 300MHz 6.2 4.8 4.2 3.8 450MHz 7.6 5.9 5.2 4.8 550MHz 8.5 6.7 5.7 5.3 750MHz 10.1 7.9 6.8 6.2 800MHz 10.4 8.2 7.0 6.4 860MHz 10.8 8.5 7.3 6.7 1000MHz 11.7 9.2 7.9 7.3