RG400 cable

Cable

RG400

MCX MALE

End A

MCX MALE

$1.00

SO239 UHF Female

End B

SO239 UHF Female

$3.00

50 Ohm DC – 300 MHz

RG400 — MCX MALE to SO239 UHF Female

Custom RG400 cable assembly with MCX MALE and SO239 UHF Female connectors. Every cable is hand-assembled, tested, and ships free.

Length Price
1 ft $12.99
6 ft $27.99
25 ft $84.99
50 ft $159.99
100 ft $309.99
250 ft $759.99
Need a different length? Use the Cable Builder

Specs Summary

CableRG400
Diameter.195 INCH
Impedance50 Ohm
FrequencyDC – 300 MHz
Velocity Factor70%
MCX MALE InterfaceMCX snap-on (CECC 22220)
SO239 UHF Female InterfaceUHF threaded (PL-259 / SO-239)

About This Assembly

RG400 Cable

RG-400 is a double-shielded, silver-plated PTFE coaxial cable built to MIL-C-17 specifications with a 0.195" outer diameter. Its construction mirrors RG-142 but with two braid shields for even greater shielding effectiveness. The standard cable for military and avionics applications requiring certified materials and traceable performance.

MCX Connector

MCX (Micro Coaxial) is a snap-on RF connector approximately 30% smaller than SMB, designed for compact equipment requiring frequent connections in a small footprint. Rated to 6 GHz, MCX is commonly used in GPS receivers, automotive telematics modules, handheld communication devices, and compact measurement instruments.

UHF Connector

The UHF connector (also known as PL-259 male / SO-239 female) is a large, low-cost RF connector designed in the 1930s for HF and VHF frequencies. Despite its name, its practical usable range is below 300 MHz due to its non-constant impedance design. It remains extremely popular in amateur radio (HF through VHF), CB radio, and marine radio applications.

Common Applications

This MCX and UHF cable assembly is well suited for military-spec RF interconnects and avionics signal routing. The combination of reliable MCX and UHF 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 RG400 Configurations

MCX MALE to SO239 UHF Female on Other Cables