---
product_id: 416170841
title: "XRDS -RF KMR 400 UHF Coax Cable - 50ft PL-259 UHF Male Coax Jumper - Low Loss 50 ohm Cable for HAM & CB Radio, SWR Meter, Antenna Analyzer, Dummy Load"
brand: "xrds -rf"
price: "$200"
currency: NZD
in_stock: true
reviews_count: 13
category: "Xrds  Rf"
url: https://www.desertcart.nz/products/416170841-xrds-rf-kmr-400-uhf-coax-cable-50ft-pl-259
store_origin: NZ
region: New Zealand
---

# Ultra-low loss: only 0.26dB attenuation @ 500MHz 50ft length for versatile setups 100% shielded, durable UV-proof jacket XRDS -RF KMR 400 UHF Coax Cable - 50ft PL-259 UHF Male Coax Jumper - Low Loss 50 ohm Cable for HAM & CB Radio, SWR Meter, Antenna Analyzer, Dummy Load

**Brand:** xrds -rf
**Price:** $200
**Availability:** ✅ In Stock

## Summary

> 📡 Elevate your radio game with the cable pros trust — no signal left behind!

## Quick Answers

- **What is this?** XRDS -RF KMR 400 UHF Coax Cable - 50ft PL-259 UHF Male Coax Jumper - Low Loss 50 ohm Cable for HAM & CB Radio, SWR Meter, Antenna Analyzer, Dummy Load by xrds -rf
- **How much does it cost?** $200 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/416170841-xrds-rf-kmr-400-uhf-coax-cable-50ft-pl-259)

## Best For

- xrds -rf enthusiasts

## Why This Product

- Trusted xrds -rf brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Sealed for Longevity:** Adhesive-lined heat shrink tubing provides airtight, weatherproof seals for worry-free installations.
- • **Built to Brave the Elements:** UV-resistant, waterproof jacket and nickel-plated connectors guarantee 20+ years of rugged outdoor reliability.
- • **Secure, Rock-Solid Connections:** Heavy-duty PL-259 mount clamp connectors prevent accidental disconnections during critical communications.
- • **Unmatched Low Loss Performance:** Experience 60% less signal loss than standard RG58 cables, perfect for high-frequency HAM & CB radio use.
- • **Precision Engineered for Signal Purity:** Professionally tested with VSWR <1.35 ensures crystal-clear transmission and minimal signal reflection.

## Overview

The XRDS-RF KMR 400 UHF Coax Cable is a 50ft, 50-ohm low-loss coaxial cable designed for HAM and CB radio enthusiasts. Featuring ultra-low attenuation (0.26dB at 500MHz), professional-grade PL-259 connectors, and a UV-proof, waterproof jacket, it delivers reliable, high-quality signal transmission with minimal interference. Tested to maintain VSWR below 1.35, this cable ensures optimal performance for antennas, SWR meters, and antenna analyzers, built to withstand harsh outdoor environments for over 20 years.

## Description

desertcart.com: XRDS -RF KMR 400 UHF Coax Cable - 50ft PL-259 UHF Male Coax Jumper - Low Loss 50 ohm Cable for HAM & CB Radio, SWR Meter, Antenna Analyzer, Dummy Load : Electronics

Review: Essentially Flat Line - Normal Power Attenuation - Comparable VSWR - Since my analyzer was out on loan, I approached this 25 foot length of coax with a comparison test with another of the same length, size, and impedance. Since the velocity factor of the cable was not given, that fact induced me to do this simple but effective comparison test. I attached a this 25 foot length of cable to my 80 Watt two meter transceiver via the power, standing wave meter. The antenna output was sent through the coax under test to a 50 ohm dummy load. The test revealed that the loss was negligible. For the same power in to the the dummy load the loss was only about 1 watt. Keep in mind that this was only an A/B comparison test. There was no change in the VSWR. That is to be expected and also a good sign. The next step was to hookup another one 25 foot length of coax line from a well known and respected manufacturer. The results were so nearly identical it was really difficult to judge which cable was the winner. Suffice to say, the test results satisfied me that the coax is of comparable quality and represents an excellent value. I also closely visually examined the attachment of the PL 259. Nice neat clean blob of solder visible at the hole of the center pin. No telltale evidence of rosin that could be the result of a cold joint. O forcefully moved the cable back and forth while in a key down mode to test for any breaks. Things were rock solid with no change in the power output or the VSWR. I am quite satisfied that this is a good low loss feed line at a modest price for a one hundred foot length. Another value bonus. The PL-259 connectors are preinstalled. For all, I am giving this item a FULL FIVE STARS. I hope you can get that whopper of a wide spaced beam up there and can work some DX. A couple of days ago Six was open till almost Ten PM. Good DX contacts. In my opinion this coax should serve you well, and It is designed to get high power to that antenna. Been there done that, for sure.
Review: Good high quality CB coax cable - Very good low resistant coax cable, although it is quite flexible, it is a large diameter and if you are planning on running it between the door and door frame, it will squash the cable. I had to run it run it through at dash height on my Peterbilt and it did squash it and it did distort the door enough that I had to add a little insulation strip at the top front corner of the door frame. The distortion of the cable didn't affect it. I have SWR of 1 on both Channel 40 and 1. And the 10 ft length was perfect for my application. Don't believe the required 18 ft. myth. Regardless of the length it will still be a 50 OHM cable and the sinewave will adapt to any length. So, if the larger cable diameter isn't a problem, this is a good choice. If you are planning on running it between the door and door frame, then look for the mini RG8 cable, which is what I thought I ordered.

## Features

- ⭐【Professionally Made】— XRDS-RF as a more than 20 years professional CB radio coax cable manufacturer, this kmr400 pl-259 cable for CB/ham radio, swept with network analyzers to assure VSWR less than 1.35.
- ⭐【Ultra-Low Loss】— The braid of this pl-259 jumper cable is high-density tinned copper and 100% shield. And it is very ultra-low loss that 3ft UHF kmr400 cable attenuates signal only by 0.26db at 500mhz. If you chose kmr400 CB coax for marine radio installations the cable had 60% less loss than the cheap rg58 at wifi frequencies.
- ⭐【Durable Solidly Built】— This pl259 uhf male cable is with the copper clad aluminium conductor. Flexible UV proof rf-pvc jacket, designed for 20-year outdoor exposure in harsh environments. New nickel-plated rf Industries waterproof UHF connectors, make a secure connection.
- ⭐【Prevent Coming Off】— In the UHF antennas cable we use heave pl-259 mount clamp connector, not the easy came off crimp type, the connector is solid and professionally attached.
- ⭐【Lengthen Thickening Adhesive】— Lined Heat Shrink Tube: The pl259 cable with black heat shrink tube, the length is up to 2.2 in and use adhesive-lined heat shrink to seal the cable to UHF connector after it's assembled, has good sealed end connections.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09R1CWWQ6 |
| Best Sellers Rank | #11,942 in Electronics ( See Top 100 in Electronics ) #16 in Digital Audio Coaxial Cables |
| Brand | XRDS -RF |
| Cable Type | Coaxial |
| Color | Black |
| Compatible Devices | Scanner |
| Compatible Phone Models | No Compatible Phone Models |
| Connector Gender | Male-to-Male |
| Connector Type | Pl-259 |
| Customer Package Type | Coiled in protective tubing or sealed anti-static bag |
| Data Transfer Rate | 500 MHz |
| Date First Available | January 24, 2022 |
| Frequency | 1000 MHz |
| Indoor/Outdoor Usage | Indoor, Outdoor |
| Item Weight | 3.14 pounds |
| Item model number | KMR 400 Low Loss Coaxial Cable |
| Manufacturer | XRDS -RF |
| Model Name | XRDS -RF CB Coax Cable |
| Number of Items | 1 |
| Number of Pins | 1 |
| Package Dimensions | 10.94 x 9.29 x 3.03 inches |
| Shape | Round |
| Special Feature | Waterproof |
| Specification Met | Cb |
| UPC | 607986648037 |
| Unit Count | 1 Count |
| Wattage | 10 watts |

## Product Details

- **Brand:** XRDS -RF
- **Cable Type:** Coaxial
- **Compatible Devices:** Scanner
- **Connector Type:** Pl-259
- **Special Feature:** Waterproof

## Images

![XRDS -RF KMR 400 UHF Coax Cable - 50ft PL-259 UHF Male Coax Jumper - Low Loss 50 ohm Cable for HAM & CB Radio, SWR Meter, Antenna Analyzer, Dummy Load - Image 1](https://m.media-amazon.com/images/I/71NfATZyCgL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Essentially Flat Line - Normal Power Attenuation - Comparable VSWR
*by D***F on July 11, 2024*

Since my analyzer was out on loan, I approached this 25 foot length of coax with a comparison test with another of the same length, size, and impedance. Since the velocity factor of the cable was not given, that fact induced me to do this simple but effective comparison test. I attached a this 25 foot length of cable to my 80 Watt two meter transceiver via the power, standing wave meter. The antenna output was sent through the coax under test to a 50 ohm dummy load. The test revealed that the loss was negligible. For the same power in to the the dummy load the loss was only about 1 watt. Keep in mind that this was only an A/B comparison test. There was no change in the VSWR. That is to be expected and also a good sign. The next step was to hookup another one 25 foot length of coax line from a well known and respected manufacturer. The results were so nearly identical it was really difficult to judge which cable was the winner. Suffice to say, the test results satisfied me that the coax is of comparable quality and represents an excellent value. I also closely visually examined the attachment of the PL 259. Nice neat clean blob of solder visible at the hole of the center pin. No telltale evidence of rosin that could be the result of a cold joint. O forcefully moved the cable back and forth while in a key down mode to test for any breaks. Things were rock solid with no change in the power output or the VSWR. I am quite satisfied that this is a good low loss feed line at a modest price for a one hundred foot length. Another value bonus. The PL-259 connectors are preinstalled. For all, I am giving this item a FULL FIVE STARS. I hope you can get that whopper of a wide spaced beam up there and can work some DX. A couple of days ago Six was open till almost Ten PM. Good DX contacts. In my opinion this coax should serve you well, and It is designed to get high power to that antenna. Been there done that, for sure.

### ⭐⭐⭐⭐⭐ Good high quality CB coax cable
*by F***O on September 7, 2025*

Very good low resistant coax cable, although it is quite flexible, it is a large diameter and if you are planning on running it between the door and door frame, it will squash the cable. I had to run it run it through at dash height on my Peterbilt and it did squash it and it did distort the door enough that I had to add a little insulation strip at the top front corner of the door frame. The distortion of the cable didn't affect it. I have SWR of 1 on both Channel 40 and 1. And the 10 ft length was perfect for my application. Don't believe the required 18 ft. myth. Regardless of the length it will still be a 50 OHM cable and the sinewave will adapt to any length. So, if the larger cable diameter isn't a problem, this is a good choice. If you are planning on running it between the door and door frame, then look for the mini RG8 cable, which is what I thought I ordered.

### ⭐⭐⭐⭐⭐ Good cable
*by 3***X on November 20, 2025*

Nice cable, works excellent.

---

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-05*