Coaxial cable Rangeful HF400-SM-PL-20 — SMA male to PL259 UHF, 20 m, 50 Ω, full copper

The Rangeful HF400-SM-PL-20 is a 20 m coaxial cable assembly with an SMA male connector at one end and a PL259 (UHF) connector at the other. Designed for 50 Ω systems, the cable uses full copper conductors and is intended for HF, VHF and UHF signal connections. Its length and connector combination make it suitable for antenna extensions, radio equipment interconnection and amateur radio applications where a durable, low-loss link is required.

Advantages

The cable’s full copper conductors provide consistent electrical conductivity and mechanical flexibility. A 50 Ω characteristic impedance ensures compatibility with common radio and antenna equipment. The 20 m length offers extended reach without the need for multiple adapters, and the SMA male to PL259 UHF connector pair enables straightforward connections between devices with different connector types. The assembly is built for repeated mating and field use with attention to signal integrity over moderate distances.

Suitable for

• Antenna extension between radio transceivers and mounted antennas
• Connecting amateur radio transceivers to external tuners or switches
• Temporary field setups, base station installations, and test measurements

Key specifications

• Length: 20 metres
• Characteristic impedance: 50 Ω
• Connector A: SMA male
• Connector B: PL259 (UHF)
• Conductor material: full copper
• Intended frequency range: HF / VHF / UHF applications

How to use

Connect the SMA male end to equipment with an SMA female socket and the PL259 UHF end to a matching UHF SO-239 socket. Ensure connectors are threaded and tightened by hand to secure the mechanical connection; avoid over-tightening with tools to prevent damage to connector interfaces. Route the cable to minimise sharp bends and avoid placing strain on connector junctions. For fixed installations, secure the cable along its run using appropriate clips or ties, leaving a small service loop near connectors if frequent disconnection is expected.

Usage recommendations

Use the cable within its intended 50 Ω systems and frequency applications (HF/VHF/UHF). Keep connectors clean and dry; inspect for corrosion or wear periodically. For best performance, avoid coiling the cable tightly and minimise exposure to harsh environmental conditions without additional protective measures.