Coaxial cable Rangeful HF400-NM-NM-20 — 20 m, flexible LMR400 UF equivalent, NM-NM connectors

Rangeful HF400-NM-NM-20 is a 20-meter flexible coaxial cable designed as an LMR400 UF equivalent, fitted with NM (male) connectors on both ends. The cable is intended for RF signal transmission in indoor and outdoor environments where low loss over long runs and flexible routing are required. Typical applications include antenna feeds, amateur radio setups and professional RF installations where stable impedance and weather-resistant performance are important.

Advantages

The cable combines an LMR400 UF-equivalent construction with flexible outer jacket materials to allow easier routing in tight spaces while maintaining low attenuation. NM connectors on both ends provide straightforward connection to compatible antenna mounts and equipment. The design offers balanced electrical characteristics appropriate for VHF, UHF and many microwave band uses, and the durable jacket improves resistance to UV and environmental exposure for outdoor deployments.

Suitable for

• Antenna feeds for base stations, scanners and receivers
• Amateur (ham) radio transceivers and field operations
• Fixed or temporary RF installations where runs up to 20 m are needed
• Indoor routing behind walls, in attics or along equipment racks

Key specifications

• Length: 20 m
• Conductor type: solid or stranded center conductor appropriate for low-loss coax (LMR400 UF equivalent construction)
• Impedance: 50 ohm nominal
• Connector type: NM (male) on both ends
• Jacket: flexible UV-resistant outer jacket suitable for outdoor use
• Attenuation: low loss suited for long runs compared with smaller-diameter coax
• Application frequency range: suitable for VHF, UHF and many higher-frequency RF uses

How to use

Prepare connectors and equipment by ensuring mating surfaces are clean and free of corrosion. Route the cable along the planned path, avoiding sharp bends and pinch points; maintain bend radii consistent with flexible LMR400-type coax to prevent performance degradation. Connect the NM (male) ends securely to female antenna sockets or adapters, making sure threads engage smoothly and any sealing practices used in outdoor installations are applied. When installing outdoors, use appropriate weatherproofing at joints and entry points to prevent moisture ingress.

Usage recommendations

For best performance, minimize unnecessary length and avoid tight coils; secure the cable with non-compressive fasteners and keep it clear of sources of RF interference and high-voltage lines. Inspect connectors periodically for wear or corrosion, and replace or recoat weatherproofing as needed for long-term outdoor installations.