MPD Digital LMR-400 Coax Cable N Male to N Male 30ft

MPD Digital's 30 ft LMR-400 coax with N male to N male connectors is a low-loss, flexible RF jumper built for reliable antenna, transmitter and ham radio connections.

This 30-foot LMR-400 cable uses the proven LMR design from Times Microwave and is supplied by MPD Digital to deliver low insertion loss, strong shielding and rugged outdoor durability for HF/VHF/UHF systems up to 6 GHz. It’s a direct-compatible, higher-performance replacement for RG‑8/9913 family cables and is intended for installations where loss, flexibility and long-term serviceability matter.

What performance can I expect from this LMR-400 jumper?

The LMR-400 construction minimizes signal attenuation across HF through UHF frequencies and remains usable up to 6 GHz with N type connectors. Dual shielding and a solid center conductor help maintain consistent RF transfer and low return loss across typical amateur, CB and professional applications.

• Low insertion loss compared with RG‑8/9913 equivalents
• Useful frequency range: DC to 6 GHz
• Dual shield design for improved EMI rejection
• Solid mechanical reliability for repeated connector cycles

How durable and weather-resistant is the cable for outdoor antennas?

The jacket is an ultraviolet-resistant, flame-retardant polyethylene (FR-PE) formulated for indoor/outdoor use, helping the cable withstand sun exposure and routine environmental stress. The cable’s nominal 0.400 inch (10.3 mm) diameter and MIL-style SRL construction support long service life and eliminate the need for conduit in many runs.

• UV-stable FR-PE outer jacket for outdoor deployment
• Nominal 0.400" (10.3 mm) diameter for easy handling and routing
• Meets MIL-style service life expectations for RF installations
• Shielding and jacket reduce need for conduit in many setups

Which connectors and applications are supported by this cable?

This assembly comes terminated with N-type male connectors on both ends, providing a robust threaded RF interface common in ham radio, CB, base station and transmitter equipment. N-type terminations offer repeatable performance and low VSWR when mated to compatible N female ports.

• Connector type: N male to N male, threaded, weather-tolerant interface
• Common uses: ham radio antennas, CB, base stations, transmitters, test equipment
• Works with devices that accept N-type male or via appropriate adapters
• Designed for mechanical stability and frequent connect/disconnect cycles

How easy is it to route and install a 30-foot LMR-400 cable?

Although LMR-400 is stiffer than smaller-diameter coax, this 30 ft jumper balances low loss and manageable flexibility for rooftop, mast or indoor runs. It can be coiled for transport and bent to fit common mounting paths while still maintaining shielding integrity if routed with gradual bends.

• 30 ft length covers typical antenna-to-radio distances without splicing
• Maintain generous bend radii to preserve performance
• Coils for storage or deployment without damage when handled properly
• Suitable for both temporary and semi-permanent installations

Who this cable is for: Installers, hobbyists and professionals who need a reliable, low-loss coaxial jumper for HF/VHF/UHF antenna systems and transmitters will benefit from MPD Digital’s LMR-400 assembly. If you want a direct, durable upgrade over RG‑8/9913-style cables with N-type terminations and a 30‑foot reach, this product provides the mechanical strength and RF performance required for long-term use in amateur, commercial and test environments.