RG400 cable

Cable

RG400

FME MALE

End A

FME MALE

$2.00

RP-SMA FEMALE

End B

RP-SMA FEMALE

$1.00

50 Ohm DC – 2 GHz

RG400 — FME MALE to RP-SMA FEMALE

Custom RG400 cable assembly with FME MALE and RP-SMA FEMALE connectors. Every cable is hand-assembled, tested, and ships free.

Length Price
1 ft $11.99
6 ft $26.99
25 ft $83.99
50 ft $158.99
100 ft $308.99
250 ft $758.99
Need a different length? Use the Cable Builder

Specs Summary

CableRG400
Diameter.195 INCH
Impedance50 Ohm
FrequencyDC – 2 GHz
Velocity Factor70%
FME MALE InterfaceFME threaded
RP-SMA FEMALE InterfaceReverse polarity SMA threaded

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.

RP-SMA Connector

RP-SMA (Reverse Polarity SMA) uses the SMA threaded coupling mechanism but with the male/female pin convention reversed — the jack has a pin and the plug has a socket. Originally standardized to prevent connection of uncertified antennas to consumer WiFi equipment, RP-SMA is now the dominant connector on commercial WiFi routers, access points, and 2.4/5 GHz antennas.

Common Applications

This FME and RP-SMA cable assembly is well suited for military-spec RF interconnects and avionics signal routing. The combination of reliable FME and RP-SMA 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 MALE to RP-SMA FEMALE on Other Cables