RG11

RG-11, or RG-11/U, is a 75-ohm coaxial cable used for RF signal distribution. It is part of the traditional RG family and is favored where long cable runs with minimal signal loss are required, such as in cable television headends, satellite installations, and security camera systems.

Construction and characteristics: RG-11 features a relatively large center conductor and a thick dielectric compared with smaller RG cables, which reduces attenuation per length. Its outer conductor is typically copper braid with an additional foil shield, all enclosed in a durable jacket. The overall diameter is generally about 0.4 inches (approximately 10 mm). The combination of materials and geometry provides lower loss and higher power handling than smaller 75-ohm variants used for shorter runs.

Applications: Because of its lower attenuation, RG-11 is widely used for long feeder runs in CATV networks, distributed antenna systems, and professional video or RF installations. It is also used for certain satellite uplinks and inter-building links where longer distances must be bridged without excessive signal loss.

Connectors and installation: RG-11 requires compatible 75-ohm connectors such as F-type, BNC, or compression connectors. Its larger size makes it stiffer and less flexible than smaller RG cables, which can affect routing and installation.

Variants: The common form is RG-11/U; other regional or manufacturer-specific variants exist with different jackets or shielding, but 75-ohm impedance and the general construction are characteristic of RG-11.