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7D-FB
Construction
| Inner conductor | Bare copper/Copper cladsteel | Φ2.6mm |
| Dielectric | Foam/Solid PE | Φ7.3±0.02mm |
| Shield | Bonded aluminium foil | Φ7.5mm |
| Outer conductor | Tinned copperbraid | Φ8.0mm |
| Shield coverage | 85% | |
| Sheath | PVC/PE | Φ9.8mm |
Electrical & Mechanical Characteristics
Impedance :50±3Ohm
Nominal capacitance :82pF/m
Velocity of propagation :82%
Insulation resistance :>5000Mohm.Km
Inner conductor resistance :3.3(5.0)Ohm/Km
Outer conductor resistance :9.3Ohm/Km
Operating temperature range :-40°C-+85°C
Min.bending radius :49mm
Attenuation
| Frequency(MHz) | Attenuation(dB/100m) | Attenuation(dB/100ft) |
| 100 | 4.3 | 1.3 |
| 150 | 5.3 | 1.6 |
| 280 | 7.3 | 2.2 |
| 350 | 8.3 | 2.5 |
| 400 | 9 | 2.7 |
| 800 | 13.1 | 4 |
| 900 | 14.2 | 4.3 |
| 1200 | 16.7 | 5.1 |
| 1500 | 19 | 5.8 |
| 1800 | 21.2 | 6.5 |
| 1900 | 21.8 | 6.6 |
| 2000 | 22.5 | 6.9 |
| 2200 | 23.8 | 7.3 |
| 2500 | 25.7 | 7.8 |