1/2″ Air Dielectric plenum Coaxial Cable

Hefei Bri Electronic & Technology Co., Ltd. is your professional manufacturer for high-performance RF connectivity. Our 1/2″ Air Dielectric Coaxial Cable is expertly engineered for use in Wireless communication, TV & Radio, HF Defense, Mobile Radio, Cable Solutions, and In Building applications. When building a critical public safety distributed antenna system, network reliability is paramount. While this specific model features a white PVC jacket, we offer fully customized solutions including fire-resistant plenum cable, high-visibility 1/2″ yellow coaxial cable, and safety-compliant 1/2″ red coaxial cable to meet stringent indoor building codes.

Reviewing our complete 1/2″ coaxial cable specifications, engineers will find a robust copper clad aluminum wire inner conductor and extruded polyethylene insulation. This serves as an incredibly efficient, low-loss transmission alternative to standard 1/2″ foam-dielectric coaxial cable. For specialized tunnel or long-corridor coverage, our comprehensive catalog also includes 1/2 radiating coaxial cable to guarantee seamless cellular radio transmission. Capable of handling a maximum operating frequency of 6 GHz, our standard 50 Ω cables are the definitive choice for demanding RF feeder networks. For optimal Low PIM performance, terminate your cables with our precision N female connectors.

What is a Plenum Cable?

In building construction, the “plenum space” refers to the area used for air circulation in heating and air conditioning systems—typically the space above a dropped ceiling or below a raised floor. A plenum cable is specifically manufactured with a highly fire-retardant jacket (often FRNC or specialized fluoropolymers) designed to restrict flame propagation and severely limit the amount of toxic smoke emitted if a fire occurs.

The Advantages of the 1/2″ Plenum Cable

For system integrators and building owners, deploying a 1/2″ plenum cable offers several vital advantages:

• Strict Fire Code Compliance: The most significant advantage of a plenum cable is safety. Local building codes heavily regulate the types of materials allowed in air-handling spaces. Using a 1/2″ plenum cable ensures full compliance with stringent indoor safety regulations, preventing costly ripped-out installations and failed inspections.

• Essential for Public Safety Networks: When deploying a Public Safety DAS, the network must remain operational during an emergency. The fire-resistant nature of a 1/2″ plenum cable provides an added layer of survivability for critical first-responder communications.

• Uncompromised RF Performance: Upgrading to a fire-retardant jacket does not mean sacrificing electrical performance. Our plenum-rated options maintain the precise 50 Ω impedance, broad frequency range capabilities (up to 6000MHz), and low signal attenuation required for modern 5G cellular networks.

• Reduced Installation Costs: Because a plenum cable can be routed directly through open air-circulation spaces without the need to install expensive, heavy metal conduits, it significantly reduces both material costs and installation labor time.

Technical Specifications: 1/2″ Air Dielectric Coaxial Cable

Material and Dimensions

• Inner conductor: Copper Clad Aluminum wire , Ø 4.80 ± 0.10mm

• Insulation: Extruded Polyethylene , 11.80 ± 0.20mm

• Outer conductor: Corrugated Copper , Ø 13.80 ± 0.15mm

• Jacket: PVC Color White , 15.90 ± 0.20mm

Electrical Specifications

• Impedance: 50 ± 1 Ω

• Relative Velocity of Propagation: 88%

• Capacitance: 76 pF/m

• Maximum Operating Frequency: 6 GHz

• Peak Power Rating: 40 kW

• Jacket Spark Test Voltage: 8000 Vrms

• Inner Conductor DC-resistance: ≤ 1.62 Ω/km

• Outer Conductor DC-resistance: ≤ 1.90 Ω/km

• VSWR (680MHz-960MHz): ≤ 1.15

• VSWR (5150MHz-6000MHz): ≤ 1.29

Mechanical and Environmental Specifications

• Tensile strength: 1120 N

• Min. bending radius (single): 76mm

• Min. bending radius (repeated): 127mm

• Bending moment: 4.1 Nm

• Flat plate crush strength: 19.2 N/mm

• Operating Temperature (PVC): -40°C to +85°C

• Installation Temperature (PVC): -20°C to +60°C

Attenuation (Typical)

• 450 MHz: 4.84 dB/100m at 1.49 kW Power

• 900 MHz: 7.08 dB/100m at 1.02 kW Power

• 2000 MHz: 11.20 dB/100m at 0.65 kW Power

• 2700 MHz: 13.30 dB/100m at 0.55 kW Power

• 6000 MHz: 22.80 dB/100m at 0.34 kW Power

Frequently Asked Questions (FAQ)

1. Why is this cable recommended for a public safety distributed antenna system?

A public safety distributed antenna system requires absolute reliability. Our 1/2″ Air Dielectric Coaxial Cable provides exceptional signal preservation up to 6 GHz , while operating reliably in temperatures ranging from -40°C to +85°C. For indoor routing, utilizing a specialized 1/2″ red coaxial cable or plenum cable ensures code compliance and instant visual identification for first responders.

2. How do the 1/2″ coaxial cable specifications compare to standard foam lines?

When reviewing the 1/2″ coaxial cable specifications, you will see that the air dielectric design with extruded polyethylene insulation achieves an excellent 88% velocity of propagation. This often provides lower attenuation for high-power applications (up to 40 kW) compared to a standard 1/2″ foam-dielectric coaxial cable.

3. When should I choose a 1/2 radiating coaxial cable over this standard line?

This standard cable is designed to transport RF signals directly from a source to an antenna with minimal loss. However, if you are attempting to provide continuous coverage in a tunnel, subway, or long elevator shaft, you should specify a 1/2 radiating coaxial cable. Radiating cables act as a continuous antenna, emitting and receiving signals uniformly along their entire length.