XRDS-RF KMR400 25ft coaxial cable showing low-loss performance for marine and HAM setups.
XRDS-RF KMR400 with PL-259 connectors enabling secure UHF connections in rugged environments.
XRDS-RF KMR400 ultra-low-loss construction minimizes attenuation for mobile and fixed-site setups.
XRDS-RF KMR400 durable UV-proof jacket withstands outdoor exposure.
XRDS-RF KMR400 solid PL-259 mount clamp prevents accidental disconnects.
XRDS-RF KMR400 adhesive-lined heat shrink seals end connections against moisture.

XRDS -RF

XRDS-RF KMR400 UHF Coaxial Cable 25ft – Low-Loss PL-259 Jumper for AIS, Marine, HAM & CB

Free U.S. shipping and free 30-day returns. Check the compatible models in the description below.

$46.83

In stock. Ships free, usually within 1–4 business days.

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Check the listed compatible models and specs before you order. Questions? Email us.

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Free tracked shipping on every order. Most orders arrive within 3–8 business days.

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Return eligible items within 30 days of delivery for a full refund. We email you a prepaid return label.

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During high demand, deliveries may experience short carrier delays. Tracking updates remain active for every order.

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Questions about fit or an order? Email nexoltic@gmail.com. We reply on business days (Mon–Fri).

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Product details

Overview

The XRDS-RF KMR400 is a 25-foot UHF coaxial jumper engineered for demanding radio setups. Built by XRDS-RF, a CB/transceiver coax expert with over 20 years in the field, this cable blends performance with rugged reliability suitable for outdoor and mobile applications.

Key technical strengths

  • VSWR under 1.35, verified by network analysis for clean signal paths
  • 100% shielded, high-density tinned copper braid supports solid signal integrity
  • Ultra-low loss: about 0.26 dB attenuation for 3 ft at 500 MHz
  • 60% less loss than common RG58 at Wi‑Fi frequencies, improving efficiency in related setups
  • Copper-clad aluminum conductor offers a balanced mix of stiffness and conductivity
  • UV-proof RF-PVC jacket designed for prolonged outdoor exposure
  • Nickel-plated, waterproof UHF connectors provide a secure, corrosion-resistant connection
  • Robust PL-259 mount clamp prevents accidental disconnections during use
  • Lined heat shrink end seals (adhesive-lined) up to 2.2 inches to create weatherproof joins

Durability and outdoor readiness

With a rugged jacket and weather-resistant connectors, the KMR400 is built to withstand sun, moisture, and harsh environments. The durable construction helps maintain dependable connections on boats, in coastal settings, and at fixed installations alike.

Practical uses and setup ideas

Ideal as a versatile jumper for AIS antennas, VHF marine antennas, HAM and CB radio links, and as a test lead for antenna analyzers, dummy loads, or SWR meters. The 25-foot length provides flexible placement options, from mast to radio room to outdoor test spots.

  • Marine and AIS antenna links where stable transmission paths matter
  • Portable or fixed HAM/CB radio configurations requiring low loss and durable connectors

FAQ

Q: What makes the XRDS-RF KMR400 25ft UHF coaxial cable suitable for marine and HAM use?

A: Its high-density shield, ultra-low attenuation, and weatherproof jacket support stable connections in outdoor and mobile setups.

Q: Does the KMR400 include features to prevent wear or disconnects?

A: Yes. It uses a solid PL-259 mount clamp and adhesive-lined heat shrink to seal ends against moisture and loosening.

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