Ultra-Low Loss N-Type Male to N-Type Female LMR400 Coaxial Extension Assembly

Maintaining strong signal metrics across high-frequency bands requires high-grade transmission hardware built to stop attenuation in its tracks. The heavy-duty N-type male to N-type female LMR400 coaxial extension cable from OHM Cables provides a high-efficiency RF link specifically engineered for cellular telemetry, modern 4G LTE/5G NR installations, and complex two-way radio base stations. Calibrated to match a strict $50 \Omega$ line profile, this professional assembly acts as the ultimate low-attenuation path to extend antenna drops, connect inline surge protectors, and link external high-gain antennas to remote wireless transceivers without strangling your equipment’s output power.

High-frequency deployments—such as Mid-Band 5G (Sub-6 GHz) or high-capacity Wi-Fi links—experience severe attenuation when run through thin, consumer-grade coaxial cords like RG58. Thin wires convert expensive RF energy into heat, causing slow uploads, dropped connections, and packet errors. Upgrading your infrastructure with an N-type male to N-type female LMR400 equivalent cable bypasses these throughput bottlenecks. Featuring an advanced dual-shield design, a massive solid core conductor, and weather-sealed industrial terminations, this male-to-female extension preserves crucial signal strength and guarantees excellent signal-to-noise ratios (SNR).

Core Structural Benefits for High-Frequency Communications

An outdoor high-frequency extension run must defend data packets against extreme weather and external radio interference. The OHM Cables N-type male to N-type female LMR400 high-performance lead delivers massive engineering advantages over traditional braided options:

1. Superior Double Shielding for 100% RF Isolation

To avoid signal degradation in environments packed with ambient radio noise, this premium extension leverages a dual-layer shield. An inner layer of 100% coverage bonded aluminum foil blocks high-frequency electromagnetic interference (EMI), while a secondary heavy tinned copper braid provides exceptional low-frequency grounding and structural strength. This achieves an RF isolation rating greater than 90 dB.

2. Minimal High-Frequency Attenuation

LMR400 standard cables feature a generous 10.3 mm (0.405-inch) outer footprint, enabling a thicker internal gas-injected foam polyethylene dielectric. This expansion lowers capacitive losses over long physical runs. For 4G/5G setups operating at 2.5 GHz or 3.5 GHz, it offers a fraction of the signal loss seen in traditional cables, delivering maximum coverage down to your transceiver port.

3. Industrial Weatherproof Terminations

Outdoor mast connections bear the brunt of wind loads, blistering sun, and downpours. Our N-type male to N-type female LMR400 extensions feature precision-machined solid brass connectors finished in non-tarnish nickel. With a threaded male coupling nut on one end and a heavy-walled female socket on the other, integrated silicone O-rings seal out moisture, while dual-wall adhesive-lined heat shrink prevents water wicking down the braid.

Advanced Metallurgy & Long-Term Performance Consistency

Every structural layer of this N-type male to N-type female LMR400 equivalent assembly is optimized for stable electrical performance over decades. The inner core is built with a high-conductivity solid copper-clad aluminum (BCCAI) conductor, paired with a gas-injected closed-cell foam dielectric. This design yields an impressive velocity of propagation ($85\%$), ensuring fast, phase-stable signal transmission.

The assembly is protected by a rugged, UV-stabilized Polyethylene (PE) jacket. Unlike standard PVC jackets that dry out, turn brittle, and crack when exposed to solar radiation, our PE compound withstands intense UV rays, freezing temperatures, and physical stress, making it the ideal choice for exposed roof, tower, and conduit runs.

Common Field Applications and Deployments

• 5G & 4G LTE Cellular Routers: Extending external omni, panel, or Yagi antenna drops to industrial cellular gateways.
• Fixed Wireless Access (FWA): Serving as the low-loss jumper from building-mounted subscriber modules to internal network enclosures.
• Two-Way Radio & Ham Transceivers: Connecting high-power UHF/VHF base stations to tower-mounted antenna systems.
• Inline Lightning Surge Protection: Inserting a low-loss patch step to link antenna arrays directly to gas-discharge tube arrestors before entering buildings.

Technical Specifications & Performance Metrics

Attenuation Profile (Loss per 10 meters / 32.8 feet)

• 700 MHz (Low-Band 5G / LTE): ~1.1 dB attenuation loss
• 900 MHz (Industrial Radio / ISM): ~1.3 dB attenuation loss
• 1800/2100 MHz (Core 4G Bands): ~2.0 dB attenuation loss
• 2500 MHz (Mid-Band 4G/5G): ~2.4 dB attenuation loss
• 3500 MHz (5G C-Band / CBRS): ~2.9 dB attenuation loss
• 5800 MHz (High-Band Wi-Fi): ~3.9 dB attenuation loss

Why Choose OHM Cables Assemblies

At OHM Cables, we understand that a high-frequency communications system is only as reliable as its weakest connection point. We reject thin flash platings, loose clearances, and cheap steel-braided materials that oxidize under outdoor exposure. Every N-type male to N-type female LMR400 extension lead is built using specialized pneumatic tooling, precision hex-crimped, and sealed with dual-wall adhesive heat shrink tubing. Our strict quality guidelines ensure every assembly is fully tested on vector network analyzers (VNAs) to verify perfect VSWR and low insertion loss before shipment.

Frequently Asked Technical Questions (FAQ)

Can this cable be used to extend an existing antenna lead?

Yes. The N-Type Female jack features external threads and a recessed center contact, matching the connector layout found on most standard cellular antenna leads. This allows you to use the N-type male to N-type female LMR400 cable as a direct high-efficiency extension drop without needing extra barrel adapters.

What is the minimum bend radius of this LMR400 extension?

For safe field deployment, the minimum bend radius is 25.4 mm (1.0 inch) for a single fixed bend, and 101.6 mm (4.0 inches) for repeated installations. Bending the cable past these thresholds can warp the internal foam dielectric, alter the $50 \Omega$ profile, and cause immediate signal reflections.

Will this assembly work with standard 75 Ohm satellite TV or cable internet?

No. Television and cable internet infrastructure rely on a 75 Ohm system profile (typically using RG6 or RG11 lines with F-type connectors). This premium N-type male to N-type female LMR400 assembly is built to a true 50 Ohm RF standard, the universal match for 4G/5G hardware, commercial transceivers, and microwave antenna systems.

Final Verdict for Telecommunications Engineers & Network Builders

Do not let high insertion losses or cheap, brittle extension cords cripple your high-frequency cellular links and radio arrays. The OHM Cables premium N-type male to N-type female LMR400 low-loss extension provides the rugged physical strength, 90 dB isolation shielding, and steady 50 Ohm matching required to maximize your wireless footprint. To round out your installation gear, feel free to browse our full selection of premium RF Connectors and rugged Coaxial Cable Assemblies. You can also explore high-frequency standards directly through the IEEE Official Resource Center. Upgrade your deployment kit with this professional LMR400 extension today, and secure the clean, long-range signal paths your hardware was designed to deliver.