Your 2025 Guide to the Best Cable for 4G Antenna

I’ve spent countless hours trying to optimize my remote internet connection, and I quickly realized that having a great external antenna is only half the battle. The real secret weapon for maximizing speed and reliability is choosing the right coaxial cable. If you’re searching for the best cable for 4g antenna setup, focusing on low loss is non-negotiable. This guide breaks down the top options I’ve personally tested to ensure you get the strongest signal possible from your 4G or 5G modem.

IMAGE	PRODUCT NAME	AMAZON LINK
	Boobrie Quad-195 Cable 9.48FT SMA Extension Cable SMA Male…	View on Amazon
	Superbat RF coaxial SMA Male to SMA Female Bulkhead RG174…	View on Amazon
	Superbat RF coaxial SMA Male to SMA Female Bulkhead RG174…	View on Amazon
	Proxicast 10 ft SMA Male to SMA Female Premium 195…	View on Amazon
	Eightwood SMA to SMA Cable, SMA Male to Male Low…	View on Amazon
	Ultra Flexible SMA to N Cable 15-Meter(49.2 Ft) Low Loss…	View on Amazon
	MOOKEERF KMR240 SMA Male to SMA Male Coaxial Cable 50…	View on Amazon

The Top Contenders: 7 Detailed Reviews

Boobrie Quad-195 Cable 9.48FT SMA Extension Cable SMA Male to SMA Female Coaxial Cable Ultra Low Loss for 5G/4G Routers,Gateways（T-Mobile Home Internet, Verizon, AT&T,4×4 MIMO Antenna, 4-in-1

This Boobrie cable is an outstanding solution for users running modern 4×4 MIMO antenna setups, especially for gateways like T-Mobile Home Internet. What sets it apart is the clever quad-bundle design—four high-quality BMR-195 equivalent cables are bound together in a single protective sheath. This makes installation incredibly clean and organized, reducing cable clutter while maintaining low signal attenuation over the 9.48-foot length. It’s built ruggedly enough for outdoor use, addressing the durability needs of rooftop installations.

Key features that stand out:
– Boobrie 4-IN-1 SMA Cable: All-in-One Solution, four cables bundled into one.
– Low-Loss Performance: BMR-195 equivalent construction ensures minimal signal loss for superior transmission quality.
– Durable Construction & Stress Relief Design: Molded construction provides strain relief and protection for indoor/outdoor applications.
– Flexible & Durable: Combines flexibility and durability with waterproofing.

Pros:
– Excellent for 4×4 MIMO setups, simplifying cable management significantly.
– Uses high-quality, low-loss BMR-195 equivalent coax.
– Highly durable and waterproof for external mounting.

Cons:
– At just under 10 feet, the length might be too short for deep wall penetration or long runs.

Best for:
Users running 4×4 MIMO setups (like specialized 4G/5G home internet gateways) who need clean, minimal clutter cable management for short distances.

Expert Opinion: This is a specialized choice, not a general-purpose cable. If your gateway uses four separate antenna ports, the 4-in-1 design is highly efficient and saves immense hassle during the installation of your best cable for 4g antenna setup.

Superbat RF coaxial SMA Male to SMA Female Bulkhead RG174 6.56ft Cable + 3pcs RF Coax SMA Adapter Kit for SDR Equipment Antenna Ham Radio,3G 4G LTE Antenna,ADS-B,GPS and etc

The Superbat RG174 kit is designed for short-run, flexible applications where adapters are often necessary. Because the RG174 cable type is very thin and highly flexible, this 6.56ft length is ideal for connecting devices housed inside waterproof enclosures or for jumper cables between equipment. The real value here is the included adapter kit (SMA Male to Male, Male to Female, Female to Female), which adds great versatility for custom connections and troubleshooting.

Key features that stand out:
– Versatile Adapter Kit: Includes three essential SMA adapters to meet diversified connectivity needs.
– RG174 Cable: Highly flexible and thin for easy routing in tight spaces.
– Bulkhead Connector: Useful for mounting or passing connections through thin panels.
– Impedance: 50 Ohm standard for RF applications.

Pros:
– Extremely flexible and easy to manage in confined spaces.
– Adapter kit provides excellent value and connectivity options.
– Perfect for short jumper applications or equipment testing.

Cons:
– RG174 introduces significant signal loss, making it unsuitable for runs over 10 feet.

Best for:
Short, flexible jumper connections (e.g., inside an outdoor enclosure) or users who frequently need a variety of SMA adapters.

Expert Opinion: When selecting the best cable for 4g antenna, remember RG174 should be minimized. Use this cable only where flexibility and extremely short distances (under 7 feet) are mandatory. The adapter kit is a huge plus for hobbyists and professionals alike.

Superbat RF coaxial SMA Male to SMA Female Bulkhead RG174 15ft Cable + 3pcs RF Coax SMA Adapter Kit for SDR Equipment Antenna Ham Radio,3G 4G LTE Antenna,ADS-B,GPS and etc

This is the longer version of the Superbat RG174 kit, extending the cable length to 15 feet while still including the comprehensive adapter set. While the 15-foot length offers more installation freedom, users should be acutely aware of the attenuation inherent in RG174 cable, especially at 4G LTE frequencies. This cable is best employed when routing around complicated structural obstacles where maximum flexibility is needed, and the signal at the antenna is already extremely strong.

Key features that stand out:
– Extended 15ft Length: Provides greater distance flexibility than the shorter version.
– Comprehensive Adapter Kit: Same three useful SMA adapters included.
– RG174 Flexibility: Easy to snake through difficult conduits or tight angles.
– Application Specific: Designed for 3G/4G LTE Antenna and GPS module connections.

Pros:
– Excellent length for medium-distance runs.
– High flexibility makes routing simpler.
– Adapter kit adds versatility.

Cons:
– Signal loss is substantial over 15 feet due to the thin RG174 cable type.

Best for:
Installations requiring high cable flexibility over a moderate distance (where minimal signal loss is not the primary concern).

Expert Opinion: Frankly, 15 feet of RG174 is pushing the limits for serious 4G signal boosting. While convenient, if your signal strength is mediocre, you must opt for a low-loss cable like LMR195 or LMR240 over this option to preserve precious dB of gain.

Proxicast 10 ft SMA Male to SMA Female Premium 195 Series Low-Loss Coax Cable (50 Ohm) – Antenna Lead Extender for 4G LTE, 5G Modems/Routers, Ham, ADS-B, & GPS (Not for TV or WiFi) (ANT-140-001-10)

Proxicast delivers a professional-grade extension cable using LMR195-size coax, the industry standard for short-to-moderate runs where minimizing loss is critical. At 10 feet, this is the sweet spot for many home installations, allowing users to move their modem closer to a window or to transition from an antenna’s pigtail without excessive signal degradation. The build quality is superb, featuring gold-plated signal pins and reinforced heat shrink ends for durability.

Key features that stand out:
– VERY LOW-LOSS LMR195-size 50-Ohm Coax: The ideal thickness for balancing loss and flexibility at this length.
– PRO-GRADE QUALITY: Features gold-plated signal pins for superior connectivity.
– SMA EXTENSION CABLE: Perfect for adding length to existing antenna leads.
– Compatibility: Works seamlessly with major modem and router brands (Cradlepoint, Peplink, etc.).

Pros:
– Excellent signal performance due to LMR195 equivalent core.
– Professional, durable construction meant for reliable, long-term use.
– Perfect 10-foot length for standard internal routing extensions.

Cons:
– It’s slightly stiffer than thinner cables like RG174.

Best for:
Users prioritizing low signal loss over maximum flexibility for extension runs up to 15 feet.

Expert Opinion: When considering the best cable for 4g antenna, LMR195 is the benchmark for short-run, low-loss performance. If you need a reliable 10-foot extension, this Proxicast option provides the robust build quality necessary to maintain signal integrity.

Eightwood SMA to SMA Cable, SMA Male to Male Low Loss RG400 Coax 1.6ft for 4G LTE WiFi Antenna, Ham Radio

For the shortest possible jumper connections, the Eightwood RG400 cable is a heavy-duty, ultra-low-loss choice. Measuring only 1.6 feet, this cable is designed to connect a modem directly to a splitter or a surge protector device. The RG400 cable type is high-grade, double-shielded (in compliance with MIL-C-17), ensuring minimal loss over this minuscule distance. The gold-plated brass connectors reflect the commitment to quality required for critical equipment links.

Key features that stand out:
– Low loss coax RG400: High-grade, double-shielded construction for maximum signal integrity.
– Ultra-Short 1.6ft Length: Ideal for zero-loss jumper connections.
– Well built connectors: Brass connectors plated with gold for mechanical durability.
– Impedance: Standard 50 Ohm.

Pros:
– Virtually zero signal loss due to the combination of RG400 and ultra-short length.
– Exceptionally high material quality and shielding.
– Very durable and firm connections.

Cons:
– Its length severely limits application to very close proximity connections only.

Best for:
Creating ultra-short, reliable jumper connections between 4G equipment and inline accessories like surge arresters.

Expert Opinion: If you have components right next to each other, don’t settle for cheap pigtails. Using an RG400 jumper like this ensures that the most critical connection—the one entering your modem—is protected from signal degradation.

Ultra Flexible SMA to N Cable 15-Meter(49.2 Ft) Low Loss RG58 N Male to SMA Male Antenna RF Coaxial Cable and Two-Way Radio Applications Pure Copper 50 ohm for 3G/4G/LTE/ADS-B/Ham/WiFi/RF Radio

When you need serious distance, this 49.2-foot cable offers the reach required for mounting an antenna far from the router. It features an N-Male connector on one end (typical for large outdoor directional antennas) and an SMA-Male on the other (typical for 4G/LTE routers). Utilizing RG58, it provides a much lower loss profile than the thinner RG174, but it is still a lossier option compared to LMR240 or LMR400. Its main benefit is its ultra-flexible PVC jacket and solid copper core, making it manageable despite the significant length.

Key features that stand out:
– 49.2 Ft Length: Provides necessary reach for challenging, remote antenna placements.
– SMA to N Connector Type: Useful for linking consumer routers (SMA) to professional outdoor antennas (N-Type).
– Low Loss RG58: Far better than RG174 for long runs, but lossier than thicker cables.
– Ultra Flexible: Designed to be bent and strapped without inducing interference.

Pros:
– Excellent length for applications requiring maximum distance.
– Includes the essential N-Type connector for professional outdoor antennas.
– More robust and lower loss than standard thin cables over long distances.

Cons:
– Despite being lower loss than RG174, 49 feet of RG58 will result in substantial signal attenuation.

Best for:
Long-distance outdoor runs requiring high flexibility where the benefit of antenna placement outweighs the cable attenuation cost.

Expert Opinion: Running a best cable for 4g antenna nearly 50 feet is always risky. If you absolutely need this distance, ensure your outdoor antenna has high gain (10+ dBi) to compensate for the significant loss introduced by the RG58 coax.

MOOKEERF KMR240 SMA Male to SMA Male Coaxial Cable 50 ohm Coax Ultra Low Loss Antenna Extension for 3G/4G/5G/LTE Network Equipment, GPS, RF Radio (6FT)

The MOOKEERF KMR240 cable steps up the performance from the standard LMR195 equivalents. The KMR240 type is thicker than RG58, resulting in ultra low loss—they specifically cite a low attenuation rate of -2.65db over 25 feet at 1800MHz. This 6-foot jumper is an ideal choice for connecting close-proximity equipment where maintaining every milliwatt of signal strength is essential. The connection is heavily reinforced with a 2.2-inch adhesive tube, ensuring professional-grade durability and stability.

Key features that stand out:
– Ultra Low Loss: KMR240 cable type offers superior performance over RG58 and is excellent for high-frequency 4G/5G signals.
– Firm Connected: Reinforced with adhesive tubing for heavy-duty, durable connections.
– High Grade Material: Inner conductor is pure copper with a tinned copper braid for efficient signal transmission.
– Outdoor Ready: PVC jacket is waterproof and oxidation-resistant.

Pros:
– Provides some of the lowest loss figures available in a flexible cable form factor.
– Highly durable and reliable connection reinforcement.
– Suitable for both indoor and outdoor short runs.

Cons:
– At 6 feet, it’s primarily useful as a jumper or very short extension.

Best for:
Demanding, short-run connections where performance and minimal attenuation are the absolute top priority.

Expert Opinion: If you are building a custom setup that requires the best cable for 4g antenna performance over a short distance, the KMR240 is likely the best choice here. Its improved attenuation compared to 195-series cables can make a measurable difference in areas with marginal signal.

Comparison Insights: Choosing the Right Cable Type

Selecting the best cable for 4g antenna depends heavily on the cable type and the necessary length. Here’s a quick comparison of the materials reviewed:

RG174 (Superbat): This is the thinnest and most flexible type. While easy to route, it introduces the most signal loss (attenuation). Use RG174 only for runs under 7 feet. If you extend it to 15 feet, you risk losing half or more of your valuable signal strength, effectively negating the benefit of your antenna.

RG58 (Ultra Flexible SMA to N Cable): This is a moderate step up from RG174. It offers a better balance of loss and flexibility than thicker cables like LMR400, but 50 feet of RG58 will still cause major attenuation. It’s only suitable when you absolutely must have a very long run and routing flexibility is key.

LMR195 / BMR195 (Proxicast, Boobrie): These cables represent the sweet spot for most short-to-moderate installations (up to 20 feet). The LMR195 equivalent cable offers significantly better low-loss performance while remaining relatively flexible. This should be your minimum standard when seeking the best cable for 4g antenna connectivity.

KMR240 (MOOKEERF): This is the next step up from the 195 series. KMR240 provides the highest performance and lowest attenuation among the flexible cables reviewed here. It’s slightly thicker and less flexible than LMR195, but if performance is key for short runs, this is the way to go.

RG400 (Eightwood): A high-specification, double-shielded cable primarily used for high-frequency military or aerospace applications. RG400 is superb for zero-loss jumper cables but is impractical for long runs due to cost and stiffness.

Final Verdict: Selecting the Best Cable for Your Setup

Finding the ideal best cable for 4g antenna setup boils down to balancing distance, cost, and signal integrity.

For the Best Performance in Short Runs (Under 10 feet): Go with the MOOKEERF KMR240 SMA Male to SMA Male Coaxial Cable. The KMR240 ensures the lowest possible attenuation, preserving every dB of signal gain your antenna collects.

For Standard Low-Loss Extensions (10–15 feet): The Proxicast 10 ft SMA Male to SMA Female Premium 195 Series Low-Loss Coax Cable is the winner. The 195-series coax is the perfect industry benchmark for reliability and performance at this distance.

For MIMO 4×4 Antenna Setups: The Boobrie Quad-195 Cable 9.48FT is unmatched in terms of clean installation and excellent cable management while maintaining a low-loss profile for crucial multi-antenna systems.

Frequently Asked Questions About Best Cable for 4G Antenna

What is signal attenuation, and why does cable choice matter?

Signal attenuation is the loss of signal strength (measured in decibels or dB) that occurs as the signal travels down the length of the cable. Every cable introduces some loss, but the thinner the cable (like RG174) and the longer the run, the greater the loss. Choosing a low-loss cable (like LMR195 or KMR240) minimizes this attenuation, ensuring that the boosted signal from your outdoor antenna actually reaches your modem with power intact.

How much cable loss is acceptable for a 4G LTE signal?

Ideally, you want total cable loss to be under 3 dB. Since 4G and 5G frequencies are higher than older standards, they are more susceptible to loss. For every 3 dB of loss, you are effectively cutting your signal power in half. If you must use a long cable run, you need to use the thickest, lowest-loss cable possible (like LMR400, though not reviewed here, or KMR240) to minimize this impact.

Is LMR195 better than RG58 for 4G applications?

Yes, LMR195 (and its equivalents) is generally superior to RG58, especially for longer runs and higher frequencies. LMR195 has a thicker, foam dielectric, which offers significantly lower signal loss compared to the standard polyethylene dielectric used in RG58. If your run is longer than 15 feet, prioritizing LMR195 or LMR240 is highly recommended.

Do I need a different cable for 5G vs. 4G LTE antennas?

While the fundamental cabling (50 Ohm coaxial cable) remains the same, 5G signals operate at even higher frequencies than 4G, which means they are far more susceptible to signal loss. If you are upgrading to a 5G setup, selecting the absolute best cable for 4g antenna connectivity—specifically KMR240 or LMR400—becomes even more critical to maintain speed and reliability.

Can I use multiple extension cables chained together to reach my antenna?

It is strongly advised to use a single continuous length of cable. Every connector introduces a small amount of signal loss and a potential point of failure (weather intrusion, impedance mismatch). If you need more length, buy a single cable of the required dimension rather than chaining multiple extensions together.

What SMA connector type do 4G modems typically use?

Most consumer and professional 4G/LTE modems and routers use SMA Female ports for external antennas. This means you will typically need an extension cable with SMA Male connectors on both ends (if extending) or an SMA Male connector to plug directly into the device. Always double-check your specific router’s requirements before purchasing.