RG178 cable

Cable

RG178

TNC MALE

End A

TNC MALE

$1.00

TNC MALE

End B

TNC MALE

$1.00

50 Ohm DC – 3 GHz

RG178 — TNC MALE to TNC MALE

Custom RG178 cable assembly with TNC MALE and TNC MALE connectors. Every cable is hand-assembled, tested, and ships free.

Length Price
1 ft $5.99
6 ft $8.49
25 ft $17.99
Need a different length? Use the Cable Builder

Specs Summary

CableRG178
Diameter1.75MM
Impedance50 Ohm
FrequencyDC – 3 GHz
Velocity Factor69%
TNC MALE InterfaceTNC threaded (MIL-STD-348)
TNC MALE InterfaceTNC threaded (MIL-STD-348)

About This Assembly

RG178 Cable

RG-178 is an extremely thin 50-ohm coaxial cable measuring just 1.75mm in diameter, designed for space-constrained RF assemblies. Its PTFE dielectric and silver-plated conductors deliver reliable performance from DC up to several GHz. Commonly used for internal wiring in test equipment, medical devices, and cellular module pigtails.

TNC Connector

TNC (Threaded Neill–Concelman) is the threaded version of BNC, offering improved performance up to 11 GHz and better vibration resistance through its screw coupling. It is commonly used in mobile radio antennas, avionics, and outdoor installations where BNC's bayonet lock would not provide sufficient mechanical security.

Common Applications

This TNC cable assembly is well suited for ultra-compact internal wiring in test equipment and small wireless modules. The combination of reliable TNC connectors and custom-cut cable length makes it a practical choice for both field installations and bench setups. Every assembly is hand-terminated, continuity tested, and ships free within the USA.

Other RG178 Configurations

TNC MALE to TNC MALE on Other Cables