RG-8X Coax UHF PL-259 100ft Antenna Cable - Low-Loss Jumper

In this review the R-U100 100ft RG-8x coax by MPD Digital is evaluated as a heavy-duty antenna jumper for hams, field operators and anyone needing a low-loss, long run between radio gear and an antenna. The single biggest reason to buy is simple: it delivers noticeably lower loss than RG-58-style cables for high-powered applications while keeping connectors and construction straightforward. For users who want a robust 50 ohm feedline that performs in demanding conditions, this cable offers a clear step up from basic coax.

Key Features

• Upgraded cable construction: RG-8x is thicker than standard RG-58 and reduces signal loss over long runs, which benefits transmit efficiency and receive clarity.
• UHF PL-259 connectors: Two nickel-plated PL-259 male connectors provide a common, rugged interface for most ham and radio setups.
• 50 ohm impedance: Designed specifically for 50 ohm antenna systems so it pairs cleanly with tuners, switches and meters without impedance mismatch issues.
• Long 100 ft length: A full 100 ft spool gives flexibility in antenna placement and routing for base stations and temporary field installations.
• Good environmental durability: Customers report reliable performance in extreme cold, indicating the cable holds up in harsh outdoor conditions.

Who It's For

This cable is well suited for amateur radio operators, CB users and installers who need a longer, lower-loss connection between a radio and an external antenna or antenna tuner. Field operators and emergency communications volunteers who require a rugged, long run cable will appreciate the combination of 100 ft length and thicker RG-8x dielectric.

Those who need the absolute lowest possible loss for very long runs or professional RF installations might prefer larger diameter, hardline coax or specialized connectors. Buyers who want factory-perfect connector assembly should inspect connectors on arrival, as some customers reported variable connector soldering quality.

Pros & Cons

Pros

• Lower loss than standard RG-58 gives better performance on high-power and long runs.
• Nickel-plated UHF PL-259 male connectors are common and durable for most amateur setups.
• 100 ft length provides flexibility for antenna placement without adding joints.
• Solid value and durability in cold environments based on customer reports.

Cons

• Connector assembly quality is mixed in customer reports, so buyers should check solder and shielding at both ends.
• Not as low-loss as larger professional hardline coax for very long or commercial installs.

Specifications

Our Verdict

The R-U100 100ft RG-8x cable is a practical, cost-effective upgrade for hams and field users who need a longer, lower-loss 50 ohm jumper. It balances performance, common PL-259 compatibility and ruggedness for outdoor use, making it a smart buy for most amateur and utility applications, while buyers needing the absolute lowest loss for commercial installs should consider heavier duty alternatives.

Frequently Asked Questions

Will this cable work with my antenna tuner?
Yes, the cable is 50 ohm and intended for use as a jumper to tuners, switches and meters in standard 50 ohm systems.

Are the PL-259 connectors weatherproof?
The nickel-plated PL-259s are durable, but customers should weatherproof the connections with tape or a boot for long-term outdoor exposure.

How does RG-8x compare to RG-58?
RG-8x has a thicker construction and lower loss than RG-58, making it preferable for higher power and longer runs.