Securiflex RG58 Premium Coaxial Cable | LSZH, UV, 50 Ohm | Black (Per Metre)

FAQs

What does RG58 coaxial cable specification mean?

RG58 is a standardized coaxial cable specification that defines specific electrical and physical characteristics. RG stands for “Radio Guide” from military specification standards. RG58 cables have a 50Ω impedance, typically use stranded copper center conductors, and have an overall diameter of approximately 5mm. This specification is widely used for RF (radio frequency) applications, computer networks, and video transmission. The SFX/58-PREM-LSZH-BLK meets and exceeds standard RG58 specifications with premium materials and construction.

What does LSZH mean and why is it important?

LSZH stands for Low Smoke Zero Halogen, referring to the cable jacket material’s fire performance characteristics. In the event of fire, LSZH cables produce significantly less smoke than standard PVC cables and emit no halogenated toxic gases (such as chlorine or fluorine compounds). This is critically important in enclosed spaces like buildings, tunnels, aircraft, and ships where smoke and toxic fumes pose serious risks to occupants during evacuation. LSZH cables are increasingly required by building regulations, particularly in public buildings, hospitals, schools, and transportation infrastructure.

What is the difference between copper clad aluminium braid and pure copper braid?

Copper clad aluminium (CCA) braid uses aluminium wire with a thin copper coating, while pure copper braid uses solid copper throughout. CCA offers several advantages: it is lighter weight, more cost-effective, and provides excellent RF shielding performance for most applications. The copper coating ensures good conductivity and corrosion resistance. For standard CCTV, satellite, and television installations, CCA braid with 85% coverage as used in this cable provides more than adequate performance. Pure copper braid is typically only necessary for very high frequency or extremely demanding applications.

What does 85% braid coverage mean?

Braid coverage refers to the percentage of the cable’s circumference covered by the woven braid shield. 85% coverage means that 85% of the surface area is covered by the braided strands, with small gaps between the weave making up the remaining 15%. Higher coverage provides better shielding against electromagnetic interference (EMI) and radio frequency interference (RFI). 85% is considered high coverage and provides excellent protection for professional installations. Standard cables often have only 60-70% coverage, so the 85% specification indicates this is a premium quality cable.

What is CPR Eca classification?

CPR (Construction Products Regulation) is a European regulation requiring construction products, including cables, to be tested and classified for fire performance. Eca is one of the fire classification grades, representing cables with acceptable reaction to fire characteristics. The classification system ranges from A1 (no contribution to fire) through B1, B2, C, D, E, to F (no performance determined). Eca classification means the cable has been tested to European standards and demonstrates controlled fire performance, making it suitable for general building installations where fire safety is a consideration.

Can this cable be used outdoors?

Yes, the SFX/58-PREM-LSZH-BLK is suitable for outdoor use due to its UV-resistant LSZH jacket which prevents degradation from sunlight exposure. The wide operating temperature range of -40°C to 70°C also makes it suitable for extreme climate conditions. However, for direct burial applications or exposure to water immersion, additional protection such as conduit is recommended. The cable performs well in outdoor mounted applications on building exteriors, between structures, or in weather-exposed locations where UV resistance is important.

What applications is this cable suitable for?

This premium RG58 coaxial cable is specifically designed for satellite dish installations, television aerial and distribution systems, CCTV security camera installations, video transmission systems, RF signal distribution, and general communications applications requiring 50Ω impedance. Its combination of good flexibility from the stranded conductor, excellent shielding from 85% braid coverage, and LSZH fire safety properties make it ideal for professional installations in commercial buildings, residential complexes, educational facilities, healthcare environments, and public infrastructure where both performance and safety are priorities.

What does 50Ω impedance mean and why is it important?

Impedance (measured in ohms, Ω) is the opposition to the flow of alternating current in a cable and must match the impedance of connected equipment. 50Ω is the standard impedance for most RF, satellite, and CCTV systems. Using cable with the correct impedance (50Ω ±3Ω in this case) ensures maximum power transfer, minimal signal reflection, and optimal signal quality. Impedance mismatch causes signal loss, reflections, and degraded performance. All components in a system (cable, connectors, equipment) should have matching impedance for best results.

How does the stranded conductor compare to solid conductor?

The stranded tinned copper conductor in this cable (19 individual strands of 0.18mm wire) offers greater flexibility compared to solid conductor alternatives, making it easier to route around corners and through confined spaces during installation. Stranded conductors are more resistant to work hardening and breakage from repeated flexing. The tinning (tin coating on the copper) provides additional corrosion resistance and makes soldering connections easier. While solid conductors can offer slightly better high-frequency performance, stranded conductors are preferred for installations requiring flexibility and durability.

What length is this cable typically available in?

Professional grade coaxial cables like the SFX/58-PREM-LSZH-BLK are typically available in standard drum lengths of 100m, 250m, 305m (1000ft), or 500m for contractor installations, as well as cut-to-length options for smaller projects. The sheath printing includes meter markings for accurate measurement during installation. For specific length availability and ordering, contact Securiflex directly. Purchasing in bulk drum quantities is most cost-effective for large installations, while cut lengths suit smaller projects or repair work.