Coaxial cable Rangeful SMA Male to PL259 UHF HF400-SM-PL-25 25 m Full copper 50 Ω

This Rangeful SMA Male to PL259 UHF HF400-SM-PL-25 coaxial cable is a 25 m, 50 Ω full-copper cable designed for HF and UHF radio applications. It provides a fixed SMA male connector at one end and a PL259 (UHF) connector at the other, enabling direct connection between transceivers, antennas and other radio equipment. The construction focuses on maintaining low insertion loss and consistent RF performance across HF and lower UHF bands while offering mechanical flexibility for installation over longer runs.

Advantages

The full-copper conductor and shield reduce resistive losses and improve signal transfer compared with cables that use copper-clad materials. The 50 Ω impedance ensures compatibility with most amateur and professional HF/UHF equipment. At 25 m length, the cable is long enough for flexible antenna placement while the SMA male and PL259 terminations support common connector types used on radios and antenna feedlines. The cable’s mechanical design balances flexibility and durability for both fixed and temporary installations.

Suitable for

• Connecting HF and lower UHF transceivers to antennas and tuners
• Portable and base station amateur radio setups
• Linking radio equipment with mixed connector types (SMA male to PL259)
• Field testing and temporary installations requiring a 25 m run

Key specifications

• Length: 25 meters
• Impedance: 50 Ω
• Conductor and shield material: full copper
• Connector A: SMA male
• Connector B: PL259 (UHF)
• Intended frequency range: HF and lower UHF bands (typical for 50 Ω RF coax)
• Cable type: coaxial with focus on low insertion loss and flexibility

How to use

Verify that both the transceiver and antenna or accessory are designed for 50 Ω impedance and that their connectors match the SMA male and PL259 types or use appropriate adapters. Route the cable to avoid sharp bends and excessive tension; maintain a bend radius appropriate for the cable to preserve performance. Connect the SMA male to the corresponding SMA female port and screw the PL259 into the matching UHF connector until it is hand-tight; avoid overtightening with tools to prevent connector damage. After installation, perform a basic RF check (SWR or signal level) to confirm proper transmission and reception through the cable run.

Usage recommendations

For optimal long-term performance, keep the cable dry and protected from prolonged UV exposure. When used outdoors, consider additional weatherproofing at connector interfaces and periodic inspection of connectors for corrosion or mechanical wear. If running near sources of strong RF or electrical noise, route the cable away from noisy equipment to reduce interference.