Coaxial cable Rangeful HF240-SM-PL-20 PL259 (UHF) to SMA male, 20 m, 50 Ω

Rangeful HF240-SM-PL-20 is a 20 m, 50 Ω coaxial patch cable with a PL259 (UHF) connector on one end and an SMA male connector on the other. It is designed for RF signal transmission between devices with UHF and SMA ports, offering a long but flexible link that preserves impedance matching to minimise signal reflections. The cable is suitable for connecting amateur radio transceivers, external antennas, and test equipment where a durable 50 Ω connection is required.

Advantages

The cable combines a 50 Ω characteristic impedance with consistent mechanical flexibility across its 20 m length, allowing extended reach without significant signal degradation. The PL259 (UHF) and SMA male connectors provide wide compatibility with common radio and RF devices. The construction maintains stable impedance to reduce VSWR and reflections in typical HF and VHF amateur radio and test setups.

Suitable for

• Connecting amateur radio transceivers to external antennas
• Patch connections between UHF-terminated equipment and SMA-terminated test instruments
• Temporary or semi-permanent antenna installations requiring a longer cable run
• Signal routing in bench test setups for RF measurements and alignment

Key specifications

• Length: 20 m
• Characteristic impedance: 50 Ω
• Connector A: PL259 (UHF)
• Connector B: SMA male
• Intended use: RF signal transmission between UHF and SMA interfaces
• Typical applications: HF/VHF amateur radio, antenna connections, test bench wiring

How to use

Connect the PL259 end to the UHF socket of the radio or antenna feed and the SMA male end to the SMA jack of the transceiver or test instrument. Ensure connectors are tightened by hand and, if applicable, use appropriate torque or tightening tools recommended for SMA and PL259 connectors to avoid damage. Route the cable to minimise sharp bends and avoid running alongside power cables to reduce potential interference. For temporary setups, secure the cable with clips or ties to prevent strain on the connector joints.

Usage recommendations

Inspect connectors before use for cleanliness and mechanical integrity. For best RF performance, avoid kinks and maintain bend radii according to typical coaxial handling practice. When used outdoors, protect connector interfaces from moisture with suitable sealing or weatherproofing. For precise measurements, keep cable runs as short as practical and verify system VSWR after installation.