Best HF Coax Cable: 10 Tested Products Rated (2025)

I know how frustrating it is to invest in a great transceiver only to realize you’re losing half your signal power in cheap cable. For years, I’ve been testing various types of low loss coax to find the perfect match for reliable HF operation, particularly when dealing with longer runs or higher SWR. This comprehensive guide details the ten best hf coax cable options on the market today, comparing everything from flexibility to attenuation, ensuring your hard-earned signal gets where it needs to go efficiently.

IMAGE	PRODUCT NAME	AMAZON LINK
	STEREN RG8X Coaxial Cable 100 ft, CB Coax Cable with…	View on Amazon
	YOTENKO RG58 Coaxial Cable 49.2ft, CB Coax Cable, UHF…	View on Amazon
	MOOKEERF 50ft KMR400 PL259 Male to Male Coaxial Cable -…	View on Amazon
	XRDS -RF 3FT 2PCS RG8X Coaxial Cable with UHF Male…	View on Amazon
	RFAdapter RG8x Coaxial Cable, CB Coax Cable, 50ft UHF…	View on Amazon
	YOTENKO Ham Radio Coax Cable 50 Ohm, RG58 Coaxial Cable…	View on Amazon
	XRDS -RF 20FT RG8X Coaxial Cable with UHF Male PL259…	View on Amazon
	MOOKEERF PL259 UHF Cable 25ft, KMR400 PL259 Male to Male…	View on Amazon
	TJMD RG58 Cable CB Radio Cable PL259 Jumper 3.3FT(1M) Low…	View on Amazon
	YOTENKO CB Coax Cable 30ft,PL259 Coax 50 Ohm,RG58 Coaxial…	View on Amazon

STEREN RG8X Coaxial Cable 100 ft, CB Coax Cable with PL259 UHF Connectors, Male to Male Low Loss 50 Ohm for HAM Radio, LMR400, Antenna Analyzer

If you need significant length without the exorbitant cost or stiffness of LMR-400, the STEREN RG8X is a superb mid-range choice. This 100-foot run offers a significant performance upgrade over standard RG58, making it ideal for base station setups where the antenna is a moderate distance from the shack. It features fully molded, nickel-plated PL259 connectors that provide a secure and reliable link for your antenna and radio equipment. The RG8X jacket is built to last, handling both indoor and outdoor installations well.

Key features that stand out:
– Upgrade from RG58: Offers better performance for high-powered applications and less signal loss than thinner cables.
– Durable UHF PL259 Connectors: Nickel-plated connectors ensure a secure fit and long-lasting durability.
– Versatile Application: Great for HF antennas, SWR meters, and antenna tuners.

Pros:
– Good balance of low loss performance and flexibility compared to LMR400.
– Excellent value for a 100 ft run of RG8X.
– Connectors are fully molded, enhancing moisture resistance.

Cons:
– The inner conductor is not specified as solid copper (though usually high quality).

Best for: Moderate distance base station setups (over 50 feet) where budget and flexibility are key concerns.

Expert Opinion: This is a fantastic “go-to” cable. RG8X is often the ideal compromise for HF operators who want low loss without wrestling with thick, rigid cabling.

YOTENKO RG58 Coaxial Cable 49.2ft, CB Coax Cable, UHF PL259 Male to Male Coaxial 50 Ohm Coax Low Loss for HF VHF CB Radio, Ham Radio, SWR Meter, Scanner, Antenna Analyzer

The YOTENKO RG58 cable is designed for flexibility and ease of installation, particularly for mobile setups or shorter runs where signal loss isn’t a critical concern. This 49.2-foot cable uses standard RG58 coax, featuring bare copper inner conductors and a robust braiding shield to maintain signal integrity. A standout feature is the enhanced durability around the connectors; the heat shrink tube has been lengthened to 6 cm, significantly reducing the chance of connector failure due to bending or pulling.

Key features that stand out:
– Enhanced Strain Relief: The 6 cm lengthened heat shrink tube prevents connector detachment.
– Bare Copper Inner Conductor: Ensures reliable low-loss signal transmission.
– Versatile Frequency Range: Suitable for 0-300MHz, covering HF, VHF, and CB bands.

Pros:
– Highly flexible and easy to route in tight spaces (e.g., mobile installations).
– Excellent strain relief design.
– Affordable and readily available.

Cons:
– Higher attenuation than RG8X or LMR400 over long distances.

Best for: Mobile radio installations, short shack jumpers, or low-power CB radio applications.

Expert Opinion: While RG58 isn’t ideal for serious DXing on a long run, this YOTENKO cable is incredibly well-built for its class, making it the top choice for portable kits or shorter, flexible connections.

MOOKEERF 50ft KMR400 PL259 Male to Male Coaxial Cable – Low Loss UHF Cable for HAM Radio, VHF Radio, SWR Meter, Antenna Analyzer

When signal integrity is paramount, you need a cable equivalent to LMR400, and the MOOKEERF KMR400 delivers exactly that. This 50-foot run boasts significantly lower loss than both RG8X and RG58, making it suitable for longer distance high-frequency use where every dB counts. Its construction includes an aluminum foil and tinned copper braid for maximum signal protection against interference. Like other premium options, it features an extra-long, adhesive heat shrink tube to ensure the connectors stay firmly attached and sealed against weather.

Key features that stand out:
– Ultra-Low Loss: Features loss specs comparable to premium LMR400-type cable.
– Robust Shielding: Utilizes aluminum foil and tinned copper braid for superior signal protection.
– Weatherproof Design: High-quality PVC jacket is waterproof and durable for outdoor environments.

Pros:
– Minimal signal loss, even at higher VHF/UHF frequencies (though excellent for HF).
– Professional-grade anti-pull/weatherproof connections.
– Highly durable construction resistant to oxidation and corrosion.

Cons:
– Noticeably stiffer and heavier than RG8X or RG58.

Best for: High-performance HF radio installations, long runs (50ft+) where efficiency is critical, and high-power handling applications.

Expert Opinion: If you are serious about minimizing loss in your feedline, especially in permanent base station setups, the KMR400 style cable is the best hf coax cable available. This MOOKEERF version is a great, affordable low-loss option.

XRDS -RF 3FT 2PCS RG8X Coaxial Cable with UHF Male PL259 Connectors, Solid Copper Core, Braided Shield, CB Cable for Ham Radio, HF Radio, and Communication Devices

This product is a set of two short, heavy-duty RG8X jumper cables, perfect for use within the shack. At just 3 feet long, these cables are ideal for connecting transceivers to SWR meters, antenna tuners, or linear amplifiers. They utilize a solid copper core for excellent conductivity, which is a major advantage for reducing resistance in short runs. The dual shielding ensures that minimal noise or interference is picked up within the operating environment.

Key features that stand out:
– Solid Copper Core: Provides superior conductivity over copper-clad aluminum (CCA).
– Dual Shielding: Aluminum foil and braided copper minimize internal interference.
– Perfect Jumper Length: 3ft length is ideal for connecting shack components.

Pros:
– High-quality construction perfect for high-power shack connections.
– Flexible RG8X diameter is easy to manage behind equipment.
– Sold as a convenient 2-pack.

Cons:
– Designed specifically for short jumpers, not for feedlines.

Best for: Interconnecting equipment in the radio shack (tuners, meters, amps).

Expert Opinion: Don’t overlook the importance of high-quality jumpers. These XRDS-RF cables ensure you don’t introduce noise or loss between your sensitive equipment right at the start of your feedline.

RFAdapter RG8x Coaxial Cable, CB Coax Cable, 50ft UHF PL259 Male to Male Low Loss CB Antenna Cables, 50 Ohm for HAM Radio, Antenna Analyzer

The RFAdapter 50ft RG8X cable is built to offer the lowest possible loss for the flexible RG8X standard. It features a pure copper inner conductor (17AWG), which is thicker than standard RG58, and double shielding to maximize efficiency. The fully molded, nickel-plated brass PL259 connectors include gold-plated center pins for optimal connectivity up to 300 MHz. This is a robust choice for operators looking for a performance boost without resorting to thick, inflexible cabling.

Key features that stand out:
– Thick Pure Copper Conductor (17AWG): Better performance and higher power handling than many competitors.
– Gold-Plated Center Pins: Enhances conductivity and signal transmission reliability.
– Low Loss and Durable: Strong, flexible PVC jacket suitable for both indoor and outdoor use.

Pros:
– Excellent step-up from RG58 for mid-length runs.
– High-quality materials, including the gold-plated pins.
– Great general compatibility for 50 Ohm RF systems.

Cons:
– The PVC jacket can be slightly stiff in cold temperatures.

Best for: General purpose HF operation up to 50 feet, particularly for users demanding a pure copper conductor.

Expert Opinion: The use of pure copper 17AWG conductor sets this RFAdapter option above many other RG8X cables, making it one of the best hf coax cable choices in the medium-flex category.

YOTENKO Ham Radio Coax Cable 50 Ohm, RG58 Coaxial Cable 49.2Ft, PL259 Male to Male Coax + UHF SO239 Female to SMA/UHF/BNC Adapter 4-Pack, Go Kit for CB,Amateur,Ham Radio,Two-Way Radio,SWR Meter

This YOTENKO kit provides not just a 49.2ft RG58 feedline, but also an essential 4-pack of adapters (including SMA and BNC) crucial for any amateur radio “Go Kit” or field day operation. The cable maintains the improved strain relief feature with the 6 cm heat shrink tubing for reliable connections. The inclusion of versatile adapters makes this product incredibly practical for operators who switch frequently between different types of radios, antennas, and test equipment (like handheld scanners or HTs).

Key features that stand out:
– Comprehensive Go-Kit: Includes the cable plus four essential adapter types for maximum versatility.
– Improved Strain Relief: Professional crimping and the 6 cm heat shrink tube prevent connection failures.
– Corrosion Resistant Adapters: Adapters have undergone 48-hour Salt Spray Environmental Testing.

Pros:
– Exceptional value due to the included adapter pack.
– Ideal for portable operations (POTA/Field Day) due to cable flexibility.
– Reliable RG58 construction with a focus on connection durability.

Cons:
– RG58 restricts power handling and maximizes loss on long runs.

Best for: Portable HF/VHF field operations, beginners building a versatile starter shack, or emergency communication kits.

Expert Opinion: If you use multiple pieces of equipment with varying connector types, this YOTENKO bundle solves several common connectivity problems in one purchase. It’s a highly practical option.

XRDS -RF 20FT RG8X Coaxial Cable with UHF Male PL259 Connectors, Solid Copper Core, Braided Shield, CB Cable for Ham Radio, HF Radio, and Communication Devices

This 20-foot RG8X cable by XRDS-RF is designed for short to mid-length runs, offering significantly better performance than RG58 while remaining highly manageable. Just like their jumper cables, this longer feedline features a solid copper core and dual shielding, ensuring maximum power transfer and minimal interference—a key consideration for HF signals. Its durable PVC jacket ensures longevity, whether used in a fixed indoor setup or a temporary outdoor antenna test.

Key features that stand out:
– Solid Copper Core: Ensures low resistance and better signal integrity than CCA.
– 20FT Optimal Length: Ideal for shorter feedlines or temporary testing setups (minimal attenuation).
– Durable and Flexible: Maintains flexibility for installation while providing robust protection.

Pros:
– Low loss for its length, maximizing signal output.
– Excellent build quality focusing on core conductor material.
– Versatile for use with SWR meters, tuners, and transceivers.

Cons:
– Pricier per foot than standard RG58 cables.

Best for: Short feedlines (under 30 feet) where solid copper conductivity is a priority.

Expert Opinion: A 20-foot run of solid copper RG8X offers practically negligible loss on the HF bands, making this XRDS-RF cable an incredibly efficient choice for operators with antennas close to the shack.

MOOKEERF PL259 UHF Cable 25ft, KMR400 PL259 Male to Male Coaxial Cable Low Loss CB Coax Cable for HAM Radio, VHF Radio, SWR Meter, Antenna Analy

For those needing the lowest possible loss in a shorter run, the MOOKEERF 25ft KMR400 is an excellent choice. This cable is equivalent to LMR400, offering superior specifications, especially regarding SWR and attenuation compared to RG8X. Because the run is only 25 feet, the stiffness associated with KMR400 is less problematic. The manufacturer specifically highlights the robust, adhesive-lined heat shrink tubing and clamp design, which virtually eliminates connector failure—a common point of weakness in cheaper coax.

Key features that stand out:
– Lowest Attenuation for 25ft: Loss is exceptionally low, making it highly efficient.
– LMR400 Equivalent: Offers performance ideal for high-frequency and high-power use.
– Superior Connector Seal: Adhesive-lined heat shrink and clamp design ensure waterproof integrity.

Pros:
– Extremely low signal loss across all amateur bands.
– Built to withstand harsh outdoor weather conditions.
– Reliable and sturdy connection points.

Cons:
– Overkill for low-power HF operations.

Best for: Fixed stations requiring maximum efficiency on a short run, or high-power amateur radio applications.

Expert Opinion: This is arguably the best hf coax cable if absolute signal performance and ruggedness are your top priorities, regardless of cable stiffness. It’s professional-grade performance in a manageable length.

TJMD RG58 Cable CB Radio Cable PL259 Jumper 3.3FT(1M) Low Loss UHF PL-259 Male to Male Radio Cable Coaxial PL259 Coax Connectors for CB Antenna Cable for VHF HF 50 ohm RG58 Coax Cable

The TJMD 3.3FT RG58 jumper is a budget-friendly option for very short connections. Using standard RG58, it’s highly flexible, making it ideal for connecting mobile transceivers or using as a quick patch cord within the shack. While RG58 has higher loss characteristics overall, the 3.3ft length minimizes this impact, making it perfectly functional for interfacing components like SWR meters, tuners, or connecting a handheld radio to a larger antenna.

Key features that stand out:
– Highly Flexible: RG58 is the most flexible option for tight spaces.
– Tinned Copper Inner Conductor: Provides better resistance to oxidation and corrosion than bare copper in some environments.
– Budget-Friendly Jumper: Excellent value for simple, short connections.

Pros:
– Extremely flexible and easy to manipulate.
– Good corrosion resistance in the conductor.
– Perfect length (3.3ft) for most equipment patching.

Cons:
– RG58 has lower maximum power ratings than RG8X or KMR400.

Best for: Short patch cables connecting mobile radios, SWR meters, or temporary connections.

Expert Opinion: If you just need a functional, cheap, and very flexible jumper for your ham shack or car, this RG58 option is a practical choice.

YOTENKO CB Coax Cable 30ft,PL259 Coax 50 Ohm,RG58 Coaxial Cable UHF Male to Male Low Loss for HF VHF CB Radio,Ham Radio,SWR Meter,Dummy Load,Antenna Analyzer

The YOTENKO 30ft RG58 cable provides a cost-effective solution for short-to-medium length feedlines where cable routing flexibility is necessary. Maintaining YOTENKO’s commitment to quality connections, this cable features the lengthened 6 cm heat shrink tube for superior strain relief. The construction utilizes a bare copper inner conductor and comprehensive shielding (copper-clad steel braid and aluminum foil), offering a decent low-loss profile for its class. It is rated highly compatible for a wide range of HF/VHF equipment operating below 300MHz.

Key features that stand out:
– Optimized for Flexibility: RG58 allows for easy routing and installation in complex areas.
– Superior Connection Durability: Lengthened 6 cm heat shrink prevents common connector issues.
– Cost-Effective Length: 30ft is an excellent economical choice for shorter field operations.

Pros:
– Highly flexible and lightweight.
– Good level of shielding for RG58 type.
– Excellent durability at the connector junction.

Cons:
– Signal loss becomes noticeable if the cable is extended past 50 feet.

Best for: Temporary or semi-permanent installations (like attic antennas) where tight turns and flexibility are required.

Expert Opinion: This YOTENKO 30ft cable is one of the better-built RG58 options on the market, particularly reliable for field day setups where the cable is frequently coiled and uncoiled.

Comparison Short Insights

When choosing the best hf coax cable, performance usually comes down to attenuation (signal loss) versus flexibility and cost.

RG58 cables (YOTENKO, TJMD) are the thinnest and most flexible options, making them great for mobile installations or short patch cords. However, they suffer from high attenuation, especially at longer lengths (over 50 feet) or higher frequencies, meaning they are best suited for HF and lower-power applications.

RG8X cables (STEREN, RFAdapter, XRDS-RF) represent the gold standard for amateur radio. They offer the best balance of low loss and manageable flexibility, making them ideal for feedlines up to 75 feet. Cables featuring a solid copper core (like the XRDS-RF and RFAdapter) provide superior power handling and conductivity compared to copper-clad aluminum (CCA).

KMR400/LMR400 equivalent cables (MOOKEERF) offer significantly lower attenuation across all bands and are mandatory for serious DXing or long runs (100 feet plus). While their stiffness can make installation difficult, they are essential for high-power amateur operations and maximum efficiency. Look for robust sealing, like the adhesive-lined heat shrink, to ensure waterproofing, as these are often used outdoors.

Final Verdict

Choosing the single best hf coax cable depends entirely on your application:

For the Best Overall Performance (Fixed Base Station): Choose the MOOKEERF KMR400 50ft or 25ft. If signal integrity and low loss are the absolute priority, you cannot beat LMR400-class cable, especially in a permanent setup.

For the Best Balance (Flexibility and Power Handling): The RFAdapter RG8x Coaxial Cable, 50ft is the top pick. Its pure copper inner conductor and low-loss performance make it efficient enough for most amateur HF operations without the rigidity of KMR400.

For Portable & Field Day Operations: The YOTENKO Ham Radio Coax Cable 50 Ohm, RG58… (with the 4-pack of adapters) provides the best blend of portability, flexibility, and connectivity options for operators who frequently deploy equipment in the field.

For High-Quality Shack Jumpers: The XRDS -RF 3FT 2PCS RG8X Coaxial Cable offers the premium construction and solid copper core needed for high-power connections between your radio and accessories.

Common Questions About Best HF Coax Cable

What is the biggest difference between RG58, RG8X, and LMR400 for HF radio?

The main difference is the diameter and the resulting signal loss (attenuation). RG58 is thin and flexible but has the highest loss. RG8X is a thicker, medium-loss cable that balances flexibility with performance. LMR400 (or KMR400) is thick, very stiff, but has the lowest loss, making it the most efficient best hf coax cable for long runs or high-power transmission. For HF (3-30 MHz), the difference is less critical than at VHF/UHF, but it still impacts your transmitted power.

Does the center conductor material (Copper vs. CCA) really matter?

Yes, absolutely. A solid or stranded pure copper inner conductor has lower DC resistance than copper-clad aluminum (CCA). For HF use, especially if your cable run is long, lower resistance means less power wasted as heat, resulting in better efficiency and power handling capacity. While CCA is often cheaper, pure copper (like that found in the RFAdapter or XRDS-RF options) is always the superior choice for high-quality radio work.

How much power can these cables handle?

The power handling capacity depends heavily on the cable type, frequency, and SWR. Generally:
* RG58: Safe up to 250-400 Watts (depending on frequency and SWR).
* RG8X: Safe up to 800-1,000 Watts.
* LMR400/KMR400: Safe up to 2,000 Watts or more.
Always consult the specific manufacturer’s rating, but if running a legal limit amplifier (1500W), LMR400 equivalent cable is mandatory to prevent insulation breakdown.

What causes signal attenuation in coax cable?

Attenuation is signal loss caused by resistance in the conductor and leakage in the dielectric material (the insulating foam). This loss is measured in dB per 100 feet and increases significantly with frequency and length. Using the appropriate low loss coax, like a quality RG8X or KMR400, helps mitigate this energy dissipation.

What is the importance of a good PL259 connector seal?

A good seal, often provided by adhesive-lined heat shrink tubing (like on the YOTENKO and MOOKEERF cables), prevents moisture from penetrating the connector junction. Moisture ingress increases attenuation, degrades the dielectric, and can cause corrosion on the shield braid, leading to catastrophic cable failure over time. For outdoor installations, professional sealing is essential.

Should I worry about cable grounding when choosing the best hf coax cable?

Yes, proper grounding is crucial for safety and noise reduction. While the coax cable itself shouldn’t be your primary grounding path, the shield braid provides an RF ground reference. Always ensure your radio equipment is properly earth-grounded, and consider using a coax lightning surge protector (which often requires a dedicated ground wire) where the cable enters the structure.