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The 7/8 feeder cable has a diameter of half of 2.54 centimeters, which is 2.22 centimeters. As a specification of RF coaxial cable, it is widely used in mobile communication, telecommunications, mobile phone signal coverage, and walkie-talkie signal coverage due to its specific size and performance. This cable can effectively transmit RF signals, ensuring communication quality and stability.
| Structure parameters | ||
| Item | Material | Diamenter (mm) |
| Diameter Over Dielectric | Foam PE | 24.13 |
| Diameter Over Jacket | PE | 27.99 |
| Inner Conductor OD | Copper-clad aluminum wire | 9.44 |
| Outer Conductor OD | Corrugated copper | 25.4 |
| Nominal Size | 7/8 in | |
| Performance parameters | |||
| Capacitor | 73pF/m | ||
| Impedance | 50ohm | ||
| Transmission rate | 85% | ||
| DC Resistance, Inner Conductor | 1.435 ohms/km | ||
| DC Resistance, Outer Conductor | 1.116 ohms/km | ||
| DC Test Voltage | 6000 V | ||
| Operating Frequency Band | 1-5000 MHz | ||
| Inductance | 0.184 µH/m | ||
| Insulation Resistance | 100000 MOhms-km | ||
| Jacket Spark Test Voltage (rms) | 8000 V | ||
| Peak Power | 91 kW | ||
| Working temperature range | -70～+85℃ | ||
| Bending radius | 254mm | ||
| ROHS/CE/FCC | YES | ||
| VSWR/Return Loss | Frequency Band | VSWR | Average Power |
| 680–800 MHz | 1.13 | 24.3 | |
| 800–960 MHz | 1.13 | 24.3 | |
| 1700–2200 MHz | 1.13 | 24.3 | |
The characteristics of 7/8 feeders include:
Good transmission performance: capable of efficiently transmitting radio frequency signals, ensuring communication quality and stability.
Excellent shielding performance: Effectively shielding external electromagnetic interference through a mesh shielding layer, protecting the integrity of the signal.
Good flexibility and durability: appropriate size and material selection make the 7/8 feeder have good flexibility and durability while maintaining high performance.
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