RG400 cable

Cable

RG400

FME FEMALE

End A

FME FEMALE

$2.00

PL259 UHF Male

End B

PL259 UHF Male

$3.00

50 Ohm DC – 300 MHz

RG400 — FME FEMALE to PL259 UHF Male

Custom RG400 cable assembly with FME FEMALE and PL259 UHF Male connectors. Every cable is hand-assembled, tested, and ships free.

Length Price
1 ft $13.99
6 ft $28.99
25 ft $85.99
50 ft $160.99
100 ft $310.99
250 ft $760.99
Need a different length? Use the Cable Builder

Specs Summary

CableRG400
Diameter.195 INCH
Impedance50 Ohm
FrequencyDC – 300 MHz
Velocity Factor70%
FME FEMALE InterfaceFME threaded
PL259 UHF Male 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.

FME Connector

FME (For Mobile Equipment) is a miniature threaded RF connector designed for mobile and vehicle-mounted antenna applications, particularly at GSM, CDMA, and FM frequencies. Its small size and robust threaded coupling make it common on vehicle-mount antenna mounts, cellular signal boosters, and mobile broadband modems.

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

FME FEMALE to PL259 UHF Male on Other Cables