Cable
RG400
RG400 Coaxial Cable
Custom RG400 cable assemblies. Choose from 52 compatible connectors and any length from 1 to 360 feet.
Specifications
About RG400
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.
Attenuation (dB per 100 ft)
| 100 MHz | 450 MHz | 900 MHz | 1.8 GHz | 2.4 GHz | 5.8 GHz |
|---|---|---|---|---|---|
| 3.5 | 7.8 | 11.5 | 17.0 | 20.0 | 34.0 |
Select End A Connector (52 available)
Choose the connector for the first end of your cable.
Select End B Connector
Choose the connector for the second end.
Technical Specifications
Common Applications
Frequently Asked Questions
What connectors are compatible with RG400?
RG400 is compatible with 52 connector types including SMA MALE, SMA FEMALE, RP-SMA MALE, RP-SMA FEMALE, SMA MALE ANGLE, and more. All connectors can be paired in any combination.
What is the impedance of RG400?
50 Ohm — standard for RF systems, test equipment, and antenna feedlines.
What frequency range does RG400 support?
RG400 supports frequencies from DC to DC – 6 GHz.
How are RG400 cables assembled?
Every RG400 cable assembly is hand-terminated and continuity tested at our US facility before shipping. We do not drop-ship pre-made cables — each one is built to your specifications.
What lengths are available for RG400?
RG400 is available from 1 ft up to 360 ft. Use the cable builder for any custom length.