A drop cable is the transmission line that connects a main distribution cable in a CATV system to the end-point location where service is delivered.
In commercial and industrial environments that rely on structured CATV distribution, the drop cable plays an important role as the final link between the primary distribution network and the individual service point. While the term is often associated with residential connections, in professional settings it applies to facilities such as office buildings, campuses, hotels, medical centers, and other large properties that use centralized CATV distribution infrastructure. The drop cable carries RF signals from the distribution line to the outlet or device, supporting consistent delivery of television, video, and broadband content across a facility.
Drop cables are typically designed to maintain signal integrity over shorter distances compared to trunk or feeder cables. They commonly feature coaxial construction with a characteristic impedance of 75 ohms, which allows them to transmit video and broadband frequencies efficiently. High-quality shielding is essential in commercial applications, helping reduce interference from nearby electronics and ensuring stable performance in dense wiring environments often found in AV control rooms, IDFs, and distribution closets.
The performance of a drop cable is influenced by factors such as conductor material, dielectric type, shielding design, and jacket composition. Commercial-grade drop cables may include enhanced shielding configurations to help minimize ingress and egress when installed near other AV or communication cables. The durability of the outer jacket supports use in varied indoor environments, and plenum-rated versions may be specified when the cable must run through air-handling spaces in accordance with building code requirements.
Also known as a service drop.
Often associated with NEC and UL guidelines that address cable construction and fire safety classifications in commercial buildings.
Drop cables emerged alongside early community antenna television systems when distribution networks expanded from small local systems into larger multi-tenant and commercial environments. As signal bandwidth requirements grew, drop cable designs evolved with improved shielding, more stable dielectrics, and performance characteristics suitable for broadband and digital transmission.