Coaxial cable Rangeful HF240-SM-PL-12 50 Ω, 12 m, PL259 (UHF) to SMA male

Rangeful HF240-SM-PL-12 is a 12 m, 50 Ω coaxial cable with a PL259 (UHF) connector on one end and an SMA male connector on the other. It provides a shielded, fixed-length RF link designed to maintain impedance matching and reduce signal loss when connecting devices that use UHF and SMA interfaces. The cable is intended for use in amateur radio setups, scanners, routers and various test or measurement arrangements where reliable RF transmission over a moderate distance is required.

Advantages

The cable combines a PL259 (UHF) connector and an SMA male connector to allow direct connection between differently interfaced devices without additional adapters. Its 50 ohm characteristic impedance supports wide compatibility with common RF equipment. The 12 m length offers flexibility in station layout while a shielded construction helps minimise external interference and preserve signal integrity. The fixed-length design ensures consistent electrical performance and predictable insertion loss across the run.

Suitable for

• Connecting ham radio transceivers to external antennas, tuners or antenna switches
• Linking scanners and receivers with SMA-equipped preamplifiers or adapters
• Connecting test instruments and signal sources in laboratory or bench setups
• Providing an RF link between routers, modems or IoT gateways with differing connector types

Key specifications

• Characteristic impedance: 50 Ω
• Cable length: 12 m
• Connector A: PL259 (UHF) male
• Connector B: SMA male
• Shielding: braided shield to reduce EMI (typical for coaxial RF cables)
• Intended frequency use: RF ranges compatible with 50 Ω systems (typical HF/VHF/UHF applications)

How to use

Verify that both devices are powered off before making connections to avoid damage from unplugged transmitters. Align the PL259 connector with the matching SO-239 or UHF socket and screw it down until secure; confirm the SMA male is threaded into the SMA female jack by hand and then tighten gently with a suitable wrench if required, avoiding over-torquing. Route the cable to avoid sharp bends, kinks or tight coils and keep it clear of high-voltage power lines and strong RF sources to minimise interference. After connections are made, power up devices and check SWR or signal levels where applicable to confirm correct operation.

Usage recommendations

Use the cable in environments where a 12 m fixed-length, shielded 50 Ω link is appropriate; avoid exposing connectors to moisture or corrosive conditions and inspect connector contacts periodically for corrosion or loosening. For outdoor antenna runs or permanent installations, consider weatherproofing the PL259/SMA junctions and using additional strain relief to prevent mechanical stress on the connectors.