Coaxial Cable Rangeful RG58-SM-PL-20 — SMA Male to PL259 UHF, RG58/U, 50 Ω, 20 m

The Rangeful RG58-SM-PL-20 is a 20 m coaxial cable assembled with an SMA male connector at one end and a PL259 UHF connector at the other, built on a standard RG58/U 50 Ω transmission line. It is intended for RF signal connections between transceivers, scanners, antennas and other radio equipment where a flexible, low-loss interconnect is required over short to medium distances. The cable construction balances flexibility and shielding to support typical amateur radio and communications applications.

Advantages

This RG58 coaxial assembly offers consistent 50 ohm impedance along the 20 m length to maintain signal integrity for VHF and UHF applications. The SMA male and PL259 UHF connectors provide compatibility with a wide range of radio devices and antenna mounts without the need for additional adapters in many setups. The cable's flexibility simplifies routing in cramped or mobile installations while its shielding reduces external interference and preserves RF performance.

Suitable for

• Connecting transceivers to external antennas
• Linking radio scanners and receivers to antenna inputs
• Portable or mobile amateur radio station setups
• Temporary or fixed RF test configurations

Key specifications

• Cable type: RG58/U coaxial
• Connector A: SMA male
• Connector B: PL259 (UHF) male
• Impedance: 50 ohm
• Length: 20 metres
• Typical use: VHF/UHF RF signal transmission
• Construction: flexible jacket with braided shielding

How to use

Inspect both connectors and equipment ports for damage or debris before connecting. Attach the SMA male end to the SMA-female port by aligning and hand-tightening the connector; avoid overtightening. Mount the PL259 end to the corresponding UHF socket and secure it by hand-turning the coupling nut until it is snug. Route the cable to avoid sharp bends and prolonged compression; maintain bend radii consistent with RG58-type cable to prevent kinking and impedance changes. When disconnecting, loosen connectors by hand and avoid pulling on the cable jacket to reduce stress on terminations.

Usage recommendations

For best RF performance, keep cable runs as short as practical and avoid running the coax parallel to power lines or noisy electronic equipment. If long-term outdoor exposure is expected, consider additional weatherproofing at the PL259 connector interface. Regularly inspect connectors for corrosion or loose contacts and replace the cable if jacket damage or significant signal loss is observed.