RG58 TNC to N-Type Male Coaxial Cable Assembly

Published on 12/16/2025 • Updated on 12/23/2025

In high-stakes RF environments like wireless communications, antenna systems, and test labs, dependable signal transmission is essential. The RG58 TNC to N-Type Male coaxial cable assembly from SigmaRF stands out as a robust interconnect solution, delivering consistent performance across telecommunications, broadcasting, military gear, ham radio setups, and industrial monitoring applications.

SigmaRF engineers these assemblies with top-tier materials and stringent testing to guarantee low attenuation, robust shielding, and enduring reliability. RG58, a versatile stranded coaxial cable, shines in moderate-frequency operations up to 1 GHz, making it perfect for general-purpose RF needs where flexibility and cost-efficiency matter. Its solid or stranded copper center conductor, paired with a polyethylene (PE) dielectric and tinned copper braid shield, minimizes signal loss while providing solid protection against electromagnetic interference (EMI) in challenging field conditions.

The design prioritizes ease and durability. The compact RG58 cable—typically 0.195 inches in diameter—offers excellent flexibility for routing in tight spaces, such as mobile antennas or equipment racks. Operating temperature ranges from -40°C to +80°C ensure it thrives in diverse climates, from outdoor base stations to indoor labs.

Connectors elevate the assembly's prowess. The TNC (Threaded Neill-Concelman) end features a threaded 7/16-28 UNEF coupling for secure, vibration-resistant mating up to 11 GHz, with 50-ohm impedance and low VSWR (1.3 max). Brass construction with nickel plating or gold contacts boosts corrosion resistance and repeatability—ideal for frequent connections in test benches. The N-Type Male connector, with its 5/8-24 UNEF threading and O-ring seal for IP67 weatherproofing, handles up to 11 GHz signals, 1500V peak voltage, and over 500 mating cycles. Precision crimping or soldering ensures optimal impedance matching and return loss below -90 dB at 3 GHz.

Key Specifications

Parameter	Details
Cable Type	RG58 (50 Ohm) ​
Dielectric	Polyethylene (PE) ​
Shielding	Tinned copper braid ​
Max Frequency	1 GHz (RG58 limit); connectors to 11 GHz ​
Attenuation (typ.)	10 dB/100ft @ 1 GHz
Connector 1	TNC (Male/Female options) ​
Connector 2	N-Type Male ​

Customization Excellence

Tailor lengths to spec, mix genders, add labels or heat-shrink for branding, and scale from prototypes to bulk orders. SigmaRF's RG58 TNC to N-Type Male assemblies tackle real-world RF demands with precision, empowering engineers for seamless connectivity. Also read Coaxial Cable selection guide that will help you to select right cable for your application.