Atlantic Radio RG400 Flexible Double Shielded Coax Cable

Built for mission-critical RF and microwave applications, the Atlantic Radio RG400 delivers exceptional performance where reliability is non-negotiable. Its double-shielded construction and silver-plated conductors provide superior protection against electromagnetic interference, ensuring crystal-clear signal integrity in the most demanding environments. The PTFE dielectric and durable tan FEP jacket allow this cable to withstand extreme temperatures up to 200°C, making it ideal for aerospace, military, and high-power commercial setups. Unlike standard cables, the RG400’s stranded center conductor offers remarkable flexibility, allowing easy routing through tight conduits and complex rack systems without compromising durability. Whether you’re setting up a repeater, a microwave link, or a tactical communication system, this cable provides a cost-effective, high-performance solution you can trust.

Key Features:
• 50 Ohm impedance for standard RF compatibility.
• Double silver-plated copper braid shielding for over 100dB isolation.
• PTFE dielectric for stable electrical performance.
• Tan FEP jacket resists chemicals, abrasion, and UV exposure.
• Operates from -40°C to +200°C.
• Supports frequencies up to 12.4 GHz.
• Highly flexible with a 1-inch minimum bend radius.
• Sold by the foot for precise length purchases.
• Handles high power (up to 600W at 1 GHz).
• Low attenuation: 14.7 dB/100ft at 1 GHz.

Compatible Devices / Use Cases:
• Repeaters and duplexers.
• Military and aerospace communication systems.
• Microwave and millimeter wave links.
• High-power commercial RF equipment.
• Indoor and outdoor antenna installations.
• Tactical and field-deployable systems.
• Laboratory and test equipment.

Technical Specifications:
Impedance: 50 Ohms
Maximum Frequency: 12.4 GHz
Operating Temperature: -40°C to +200°C
Shielding: Double Silver-Plated Copper Braid
Center Conductor: Stranded Silver-Plated Copper (19 strands)
Dielectric: PTFE
Jacket: Tan FEP, 0.195″ diameter
Minimum Bend Radius: 1.0 inch (repeated)
Attenuation at 1 GHz: 14.7 dB per 100 ft
Velocity of Propagation: 70%
Capacitance: 105 pF/m
Maximum Voltage: 1,400 V
Weight: 0.104 lb/ft

Frequently Asked Questions

What is the main difference between RG400 and LMR400 cable?

RG400 is a smaller-diameter (0.195″) cable designed for high-isolation, flexible applications with a double shield. LMR400 is larger (0.405″) and typically has a single shield, offering lower loss for longer runs but less flexibility and EMI protection. RG400 excels in tight spaces and high-interference environments.

Can RG400 cable be used outdoors?

Yes. The tan FEP jacket is UV-stable, chemically inert, and waterproof, making it suitable for both indoor and outdoor installations, including direct burial in conduit for antenna feeds.

What connectors are compatible with RG400?

RG400 accepts a wide range of common connectors, including N-Type, BNC, PL-259, and SMA. Pre-assembled jumpers with N-Male connectors are available for easy connection to repeaters and duplexers.

Is RG400 cable sold in pre-cut lengths or only by the foot?

It is primarily sold by the foot for custom lengths. Pre-assembled jumpers (e.g., 18-inch N-Male) are also available for specific applications like repeater connections. Bulk spools (e.g., 1000 ft) can be ordered for large projects.