MOOKEERF KMR400 25ft N Male to N Male KMR400 Coaxial Cable

MOOKEERF KMR400 25ft N-to-N coaxial cable is an ultra low loss, weather-resistant 50Ω link designed to carry high-frequency signals between antennas, routers, and amplifiers with minimal attenuation.

This 25-foot KMR400 cable delivers professional-grade RF performance for applications that need stable signal transfer over distance. Built with a tinned-copper braid and aluminum foil shield, a waterproof PVC jacket, and clamped N-male connectors, it balances low insertion loss, low SWR, and rugged outdoor durability. The cable is engineered for 50-ohm systems including antenna extensions, signal boosters, and high-frequency wireless equipment.

How much signal loss should I expect over 25 feet at cellular frequencies?

The KMR400 construction minimizes attenuation so your signal stays stronger across the run. Measured loss at 1800 MHz is about 1.52 dB, which is noticeably lower than common thin coax options. That keeps more of the original RF energy reaching the device and reduces wasted transmit power.

• Measured loss: ~1.52 dB at 1800 MHz
• Designed for high-frequency use with low insertion loss
• 50-ohm characteristic impedance for compatibility with consumer and pro gear

Will the connectors and jacket survive outdoor exposure?

The cable uses heat-shrink tubing with inner adhesive at the connector joint and a clamped design to resist separation and moisture ingress. The outer PVC jacket is waterproof and abrasion-resistant, suitable for rooftop, mast, or exterior wall runs. These features reduce the chance of corrosion and mechanical failure in demanding environments.

• Waterproof PVC outer jacket for outdoor use
• 2.2" heat-shrink tube with adhesive at connector junction
• Clamped connector design for mechanical robustness

Is this cable compatible with my antenna, booster, or router?

Yes — the MOOKEERF KMR400 is N male to N male and built to a 50-ohm standard, making it compatible with a wide range of RF devices. It suits antennas, 4G/ LTE boosters, GMRS repeaters, amplifiers, and test equipment that accept N connectors or can adapt to them. Always confirm connector gender and impedance on your equipment before connecting.

• N male to N male connectors fit N female ports on antennas and equipment
• 50-ohm impedance matches common telecom and RF accessories
• Useful for antenna extension, repeaters, routers, and meters

How does this cable compare to thinner, cheaper coax types?

Compared with standard RG-type or slim coax, KMR400 offers significantly lower attenuation and better shielding thanks to a thicker dielectric, foil + tinned-copper braid, and higher-quality connectors. You trade a bit more weight and diameter for far better RF performance and durability. That makes it a better long-term choice where signal strength and reliability matter.

• Superior shielding: aluminum foil plus heavy tinned-copper braid
• Lower SWR (≤1.15) and reduced insertion loss versus thin coax
• Robust connectors and jacket suited to repeated installation and outdoor use

Who is this for? Installers, hobbyists, and professionals who need a dependable 25-foot 50Ω N-to-N cable for antennas, boosters, routers, or measurement gear will appreciate the MOOKEERF KMR400. It fits use cases where conserving RF power and maintaining signal integrity across longer runs is important — rooftop and mast installations, external antenna feeds, and repeater or amplifier connections all benefit. MOOKEERF manufactures these cables to pro standards; contact their support if you need assistance or have special installation questions.