LMR 400 Coaxial Cable – Professional Low-Loss RF Transmission for Signal Booster Systems

The LMR 400 Coaxial Cable is a premium, low-loss 50-ohm RF transmission cable engineered for high-performance signal transfer in mobile repeater systems, broadband RF networks, and professional communication infrastructures. Designed for both indoor and outdoor deployment, the LMR 400 cable features exceptional shielding, weather resistance, and signal integrity—making it one of the most commonly used coaxial cables for extending mobile signal booster systems.

LMR 400 Coaxial Cable High-Performance RF Construction

The LMR 400 Coaxial (Black) Cable utilises a precision-manufactured copper-clad aluminium conductor, a physically foamed polyethylene (FPE) dielectric, and a dual-shielded bonded aluminium/polyester foil with braided tinned copper. This advanced construction ensures the LMR 400 Coaxial Cable maintains extremely low attenuation levels, even across long distances, allowing for superior RF efficiency in demanding installations.

Whether used to connect outdoor donor antennas to amplifiers or distribute signal between boosters and indoor coverage antennas, the LMR 400 Coaxial Cables ensures optimal performance across all mobile frequency bands, including 700 MHz, 800 MHz, 900 MHz, 1800 MHz, 2100 MHz, and 2600 MHz, as well as WiFi, GPS, and general RF systems up to 6 GHz.

LMR 400 Coaxial Cable Available in Pre-Terminated or Bulk Lengths

The LMR 400 Coaxial Cable is available as:

• Pre-terminated N-Male / N-Male crimped cables from 1 metre to 100 metres
• Bulk cable reels up to 200 metres
• Custom-cut and custom-terminated lengths on request

All pre-terminated LMR 400 cables are precision-crimped using high-tolerance RF connectors to ensure minimal return loss, excellent shielding effectiveness, and long-term mechanical stability.

Low-Loss Cable for Professional Installations

As a high-grade low-loss coaxial cable, the LMR 400 Coaxial Cable is engineered to minimise RF signal degradation over distance. However, incorrect cable lengths can significantly impact system performance. Excessive cable length increases attenuation, reducing booster output and weakening indoor coverage.

Using cable longer than required can lead to:

• Increased signal loss (dB attenuation)
• Reduced indoor coverage area
• Lower 4G/5G data throughput
• Degraded call quality or unstable signal

For best results, the LMR 400 Coaxial Cable should be installed at the minimum necessary length while maintaining safe routing and correct bending radius.

Technical Guidance Strongly Recommended

Because RF cable length directly affects the performance of a mobile signal booster, we strongly advise consulting our Technical Support Team before purchasing or installing LMR 400 Coaxial Cables, especially for long-distance runs or multi-antenna systems. Proper cable selection ensures maximum system efficiency, compliance with network standards, and long-term reliability of your installation.

Email Us: [email protected]

Call Us: 02045788432

WhatsApp Us: 07874191006

• Ultra low-loss black cable
• For 50 ohm signal boosters
• N-connectors

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