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LMR400 Coax Cable Features
- This 100 feet lmr400 low loss heavy duty cable can be used inside building or outside buildings. They work with all devices with 50 Ohm impedance.
- This KMR400 coax cable is LMR400 cable equivalent. You could use this cable to diy your cable as your need.
Compatible Connector Type
- N Type Connectors
- UHF Connectors
- BNC Connectors
- SMA Connectors
- TNC Connectors
NR2
Reviewed in Canada on January 10, 2025
I purchased 100 foot role of KMR400 cable. I checked the insertion loss over the entire 100 foot role by inserting 100 watts at one end at 147 MHz and I measured 70 watts at the other end. Doing the math, that works out to be 1.54 dB over the length of the cable. That is the same performance as LMR400 cable but at half the price. I'd buy the KMR cable again for my next project.
Gary Munro
Reviewed in Canada on July 4, 2024
Works as it should.
K2DS
Reviewed in the United States on June 30, 2024
Good Quality. 99% Shielded..
Rick in PA
Reviewed in the United States on May 16, 2024
Using this for a 2 meter ham radio application. Running from my roof to my basement and didn't want a poor SWR due to mediocre cable. Easy to work with and jacket and shielding are well made.
Matt Valencia
Reviewed in the United States on February 6, 2024
This cable performs on par with big name .400 class coax. I was able to test all aspects of the cable and was pleasantly surprised to find all specs to be as published. This is a great product and will buy again. I use this as feed line to all of my HF and VHF antennas. I hope to see long term performance from KMR-400.
Chris
Reviewed in the United States on November 1, 2024
This coax is acceptable. But it does not perform as well as times microwave LMR 400 up in the 440 band UHF and higher. But it seems good for HF/VHF with minimal loss. It doesn’t meet ALL the specs that they give though and I have tried multiple pieces with my test equipment and have found it to not meet there specs, especially in the UHF band when I do a sweep test. But like I said, it is acceptable for HF and VHF, it is just as good as RG 213 or LMR 400 in that frequency range. Most ham radio guys do not buy their coax from Amazon, so it will work perfectly fine for the guys on CB radio that do shop on here. I was just checking out to see if there are any bargains available.
Dylan J Hildebrand
Reviewed in Canada on July 5, 2023
It's an aluminum center core not copper..Will not purchase again. Not LMR 400.. not really a good copy
John T
Reviewed in the United States on November 26, 2023
I have installed this to my HF radio antennas and am very happy with its construction, handling, and performance. The center conductor is copper-clad aluminum and so it is a bit lighter in mass than that with pure copper center conductors, and is still a substantial and low loss cable for use at HF frequencies. While the product photo shows a wooden spool, that is not included in the order. What one will get is a nicely wound length of coax for termination by the user. I used crimp-on fittings and am very pleased with this coax cable. No problems or issues at all - it is a drop-in replacement for LMR-400 and RG-8 coax. Recommended! Great value for its price.
John T
Reviewed in the United States on September 23, 2022
The KMR400 coax has the same specifications as the Times Microwave standard LMR400 cable but at about 1/3 the price. This cable is constructed similarly to the LMR400 and is similarly a very stiff cable. The cable is not like the Times Microwave UltraFlex version which is much more flexible and has a slightly larger power loss.The connectors solder easily to the KMR cable, but the outer shield wire seems frizzier the LMR. I measured the coax cable loss with a MFJ 259 analyzer and verified the loss was the same as specified which is the same as the LMR.I use this cable for all feedlines outside my ham radio shack. Inside, I use the LMR400 UltraFlex cable. For portable antennas, shorter feedlines and lower frequencies I use the MOOKEERF coax found on Amazon. The MOOKEERF cable is smaller, has more loss and is cheaper.
tk
Reviewed in the United States on June 21, 2022
This coax seems to have decent build quality. The shield/braid is a lot thinner than LMR400--I don't have the equipment to test/verify the loss compared to LMR400. Installed 100' on a 2m/70cm dual-band amateur radio antenna, and it seems to perform decently. We'll see how it holds up to the sun and weather, but i'm confident it will hold up ok.
Tim
Reviewed in the United States on November 7, 2022
Much more flexible than LMR-400. Is it the same quality TX/RX as the expensive stuff? I have no idea. But I know it's gotta be better than the bottom shelf stuff most Hams grab first and a lot easier to roll out and run than the even better stuff. Unless I start getting bad signal reports, this stuff will do great.
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