XRDS -RF KMR400 RF Coaxial Cable 50 Ohm Low Loss 200FT

Our review of the XRDS -RF KMR400 200ft coaxial cable finds it best suited for installers, amateur radio operators and anyone needing a long, low-loss 50 ohm run for outdoor or indoor antenna work. The single biggest reason to buy is its ultra low-loss construction that mirrors LMR400 performance over long distances while allowing DIY termination because it ships with no connectors. For users who want a ready-made pigtail or need ultra-flexible cable, this bulk, heavy duty cord may be stiffer than alternatives, but for signal-critical runs it keeps loss to a minimum.

Key Features

• Ultra low loss: The cable delivers minimal attenuation so signals remain strong over the full 200ft length, reducing power loss on longer runs.
• LRM400 equivalent: Built to match LMR400 handling and electrical behavior, it performs well for RF applications up to several GHz.
• Bulk 200ft length: A full 200ft spool-less length gives flexibility to cut and terminate exactly as needed for custom installations.
• Durable materials: Copper clad aluminum center conductor and a weatherproof PVC jacket provide a balance of conductivity and outdoor durability.
• 50 ohm compatibility: Designed for devices and antennas that require 50 ohm impedance and compatible with standard N, SMA, UHF and BNC connectors when terminated.

Who It's For

This cable is ideal for hobbyists, radio amateurs and professional installers who need a long, low-loss feedline they can cut and terminate on site. It works well for antenna runs, base stations and applications where improved shield and low attenuation are required.

Those looking for a factory-terminated, very flexible jumper or a short patch lead should look elsewhere; the KMR400 equivalent is relatively stiff compared with thinner cables and ships without connectors, so expect to terminate ends yourself or pay for assembly.

Pros & Cons

Pros

• Low attenuation across the run, preserving signal strength for long-distance feeds.
• Good build quality with a copper clad aluminum conductor and robust PVC jacket for outdoor use.
• Bulk 200ft spool-free length offers customization and cost savings for large installs.
• Compatible with standard 50 ohm connectors once terminated to suit varied gear.

Cons

• Relatively stiff handling compared with smaller coax types, which can make tight routing harder.
• Ships without connectors, requiring tools and skill to terminate properly for best SWR.

Specifications

Our Verdict

The XRDS -RF KMR400 200ft coax is a practical, value-focused bulk feedline for anyone needing a low-loss 50 ohm run that can be cut and terminated on site. Its construction and electrical specs make it a strong choice for antenna installations and RF projects where signal retention matters; just plan for termination tools and expect firmer handling during routing.

Frequently Asked Questions

Can I use this cable with my antenna that needs 50 ohm cable?
Yes. The cable is 50 ohm and designed to work with antennas and devices that require that impedance when properly terminated.

Does it come with connectors or a reel?
No. The product ships as 200ft of cable without connectors and without a reel so you can cut and terminate lengths as needed.

How weather resistant is the jacket for outdoor use?
The PVC jacket is described as weatherproof and suitable for outdoor installations, though good practice is to seal terminations and avoid prolonged UV exposure where possible.