RG-393 Cable

Description

RG-393 is a premium, high-reliability coaxial cable designed for 50 Ohm systems where high power handling and low signal loss must be maintained under extreme thermal and mechanical stress. Manufactured to meet strict MIL-DTL-17 specifications, it is often utilized as a high-performance, high-temperature alternative to RG-214. The cable features a large 12 AWG stranded silver-plated copper center conductor, providing exceptional electrical conductivity and the flexibility required for routing through complex chassis.

The defining characteristic of RG-393 is its high-temperature architecture, featuring a PTFE (Teflon) dielectric and a durable FEP (Fluorinated Ethylene Propylene) jacket. This allows the cable to operate reliably in temperatures ranging from -55°C to +200°C. For maximum signal integrity, it is equipped with a double silver-plated copper braided shield, offering superior RF isolation and protecting against electromagnetic interference (EMI). Its heavy-duty silver plating ensures minimal attenuation and long-term resistance to oxidation, making it a “gold standard” for critical RF infrastructure. It is typically terminated with high-power N-Type, SC, or TNC connectors.

Key Technical Advantages

• Exceptional Power Handling: Optimized to transmit high-wattage RF signals with minimal heat buildup, making it ideal for transmitter outputs and amplifiers.

• Extreme Thermal Stability: The PTFE/FEP construction ensures the cable does not melt or degrade in high-heat industrial or aerospace engine environments.

• Superior Double Shielding: Two layers of silver-plated copper braid provide maximum RF isolation, preventing signal leakage and protecting against external RFI.

• Silver-Plated Precision: Silver plating on the large stranded conductor and both shields maximizes signal efficiency via the “skin effect” and ensures superior corrosion resistance.

• Low Attenuation: The combination of a large gauge conductor and high-quality dielectric provides significantly lower loss at high frequencies compared to standard cables.

Key Features

• Cable Type: RG-393 / U (MIL-C-17).

• Impedance: 50 Ohm.

• Center Conductor: 12 AWG (7/.0312 Stranded Silver-Plated Copper).

• Shielding: Double Silver-Plated Copper Braid (90% minimum coverage per layer).

• Dielectric: PTFE (Teflon).

• Common Applications: High-power radar systems, aircraft avionics, satellite ground stations, and high-temperature industrial RF links.

Technical Summary