KMR240 N Male to SMA Male Cable 35FT - Ultra Low Loss 50 ohm

In this review of the KMR240 N Male to SMA Male Cable 35FT the bottom line is simple: it is a rugged, low-loss coax choice for anyone routing 3G/4G/LTE, GPS/ADS-B or amateur radio signals between an outdoor antenna and an indoor device. The single biggest reason to buy is the cable construction - a pure copper center conductor with dense 168-strand tinned copper braid and a UV-proof PVC jacket - which together deliver noticeably lower signal loss and long-term outdoor durability compared with thinner RG58-style cables.

Key Features

• Application: Built for 3G/4G/LTE, Ham radio, ADS-B and GPS uses, it is suitable for connecting outdoor or remote antennas to indoor amplifiers or surge arrestors.
• Connector type: Fitted with an N-male on one end and an SMA-male on the other, the connectors allow common antenna-to-radio hookups when device ports match.
• Cable construction: The 35 ft KMR240 (LMR240 equivalent) body uses a thicker pure copper inner conductor that reduces resistance and improves signal fidelity versus RG58.
• Ultra low loss braid: The high density tinned copper 168-braid shielding minimizes RF leakage and helps preserve signal strength over the 35 ft run.
• Flexible UV-proof jacket: The PVC outer jacket resists ultraviolet degradation and oxidation for long outdoor life while remaining easier to bend than larger KMR400/RG8U cables.
• Professional manufacture: Produced to high standards for consistency and backed by the manufacturer for support if issues arise.

Who It's For

This cable is aimed at hobbyists and installers who need a reliable 35 ft feed between an outdoor antenna and indoor radio, router, GPS receiver or signal booster. It fits use cases where lower loss than RG58 matters and where durable outdoor performance is required.

It is not ideal for very tight indoor routing where extreme flexibility is required or for systems that need different connector genders; buyers should confirm their equipment uses N-male and SMA-male ends before ordering. For runs much longer than 35 ft or for bulkhead installations requiring different terminations, another cable type or custom assemblies may be preferable.

Pros & Cons

Pros

• Strong, well-shielded construction that delivers low signal loss over 35 ft.
• Pure copper center conductor provides better conductivity than copper-clad aluminum alternatives.
• Durable UV-resistant PVC jacket designed for long outdoor service and easier handling than stiffer larger coax.
• Standard N-male to SMA-male connectors match many antenna-to-router or antenna-to-receiver setups when genders are correct.

Cons

• Several users report the cable is relatively stiff, which can complicate tight bends or compact installations.
• Fixed connector genders mean buyers must verify compatibility; adapters may be needed if ports differ.

Specifications

Length	35 ft
Cable type	KMR240 (LMR240 equivalent)
Impedance	50 ohm
Center conductor	Pure copper
Shielding	168-strand tinned copper braid
Connectors	N-male to SMA-male
Jacket	UV-proof PVC for outdoor use

Our Verdict

The KMR240 35 ft N-male to SMA-male cable is a practical, value-minded choice for antenna installations that need lower loss than RG58 and durable outdoor performance. Installers and hobbyists who require a mid-diameter, weather-resistant feed with solid shielding will find it reliable, though those needing extreme flexibility or different connector genders should check alternatives.

Frequently Asked Questions

Will this cable work outdoors?
Yes. The cable has a UV-proof PVC jacket and tinned braid shielding designed for outdoor antenna runs and long-term exposure.

Are the connectors compatible with my router or GPS?
It uses N-male to SMA-male ends; verify your device ports match those genders or use a suitable adapter.

Is this better than standard RG58?
Yes. The KMR240 construction uses a thicker pure copper center and denser braid, offering lower loss and improved signal retention versus typical RG58.