KX8 coaxial cable is used for 75-ohm RF and video-signal transmission in applications such as CATV distribution, broadcasting, shared-antenna systems, subscriber lines and related electronic equipment. When selecting KX8 for a project, buyers should confirm the operating frequency, cable length, allowable attenuation, connector compatibility, routing space and installation environment.
Conductor | MATERIAL | BC/CCS |
Nom.Dia. (mm) | 7*0.4±0.05 | |
Dielectric | MATERIAL | PE |
Nom.Dia. (mm) | 7.25±0.05 | |
Shield | MATERIAL | ALFoil+AL Braiding |
COVERAGE | 40%-95% | |
Jacket | MATERIAL | PVC/PE |
Nom.Thick. (mm) | 0.80±0.05 | |
Nom.Dia. (mm) | 10.20±0.05 |
Nominal Impedance(ohm) | 75±3 | ||
Nominal Velocity of propagation(%) Nominal Capacitance(pf/m) | 85 67±3 | ||
Spark Test(VAC) | 2500 | ||
SRL(dB) | 20 | 20 | |
Attenuation [68°f(20℃)] | Frequency（MHz） | Maximum (dB/100m) | |
10 | 2.90 | ||
50 | 4.50 | ||
100 | 6.60 | ||
200 | 10.90 | ||
400 | 13.80 | ||
850 | 23.60 | ||
950 | 26.80 | ||
1000 | 27.50 | ||
When evaluating KX8 for a transmission system, compare attenuation at the actual operating frequency and expected cable length. Total signal loss, connector compatibility and installation conditions should be considered together rather than selecting a cable only by model name or diameter. (Read our coaxial cable selection guide)
KX6 and KX8 are both 75-ohm coaxial cables in Xingfa's product range, but they differ significantly in cable dimensions and published attenuation.
KX8 uses a 7 × 0.4 ± 0.05 mm BC/CCS center conductor and has an approximately 10.20 mm overall diameter. By comparison, Xingfa's KX6 coaxial cable uses a 7 × 0.2 mm bare-copper conductor and has an approximately 6.10 mm overall diameter.
Based on Xingfa's currently published specifications, KX8 also has lower maximum attenuation at comparable frequencies. At 100 MHz, KX8 is published at 6.60 dB/100m versus 11.80 dB/100m for KX6; at 1000 MHz, the published values are 27.50 dB/100m for KX8 and 41.50 dB/100m for KX6.
This does not mean KX8 should automatically replace KX6. KX6 may remain appropriate where its smaller construction and published electrical performance meet the system requirements. Buyers should compare operating frequency, cable length, allowable loss, connector compatibility and routing space before changing cable models.
| Specification | KX8 | KX6 |
| Impedance | 75 ± 3 Ω | 75 ± 3 Ω |
| Conductor | BC / CCS | BC |
| Conductor Size | 7 × 0.4 ± 0.05 mm | 7 × 0.2 mm |
| Overall Diameter | 10.20 ± 0.05 mm | 6.10 ± 0.05 mm |
| 100 MHz Attenuation | 6.60 dB/100m | 11.8 |
| 1000 MHz Attenuation | 27.50 dB/100m | 41.5 |
Xingfa has manufactured coaxial cable since 1996. Its current company profile lists five coaxial cable production lines with annual output of approximately 200,000 km.
Xingfa also supports OEM and ODM cable projects. Buyers sourcing KX8 can submit the required cable specification, quantity, cable length, jacket requirement, packaging, target market and documentation requirements for technical review before quotation.
What is KX8 coaxial cable used for?
KX8 is a 75-ohm coaxial cable used for RF and video-signal transmission applications including broadcasting, CATV, shared-antenna systems, subscriber lines and related electronic equipment.
What is the impedance of KX8 cable?
Xingfa's current KX8 specification lists a nominal impedance of 75 ± 3 ohms.
What is the difference between KX6 and KX8?
KX8 has a larger published conductor and cable diameter than KX6 and lower published maximum attenuation at comparable frequencies. The correct model should still be selected according to frequency, transmission distance, connector compatibility and installation space.
Can Xingfa manufacture custom KX8 coaxial cable?
Xingfa offers OEM and ODM cable services. KX8 customization requirements should be reviewed according to the required construction, quantity, packaging and destination market.
