For UAE project teams, the key is to match this exact configuration to the port schedule, optical budget and delivery documentation. This duplex FTTA patch cable connects the baseband unit at the foot of the tower to the remote radio unit at the top, carrying two OS2 9/125µm single-mode fibers inside a 7.0mm LSZH outdoor jacket. The two ends terminate in LC UPC duplex connectors that plug directly into the SFP and SFP+ ports of common LTE, 4G and 5G radio systems. Because this cable core is Corning G.657.A1 bend-insensitive glass, and every leg is protected by a helical steel armored branch tube, this assembly survives pulling, bird damage and rodents across years of outdoor exposure.

Product Highlights

• LC UPC to LC UPC duplex, OS2 9/125µm single mode
• Corning G.657.A1 bend-insensitive fiber, 20/10D bend radius
• 7.0mm LSZH outer jacket, UV stabilized and flame retardant
• Helical steel armored branch, anti-rodent and bird-proof
• Tensile strength 200/400N, crush resistance 1100/2200N
• Stock lengths 1m to 50m; project lengths on request

Specifications

Built for the BBU to RRU link

Modern base station architecture separates the baseband unit (BBU) in the shelter or cabinet from the remote radio unit (RRU) mounted beside the antenna. The connection between them carries CPRI or eCPRI traffic over duplex single-mode fiber, and it is the most from a mechanical standpoint stressed jumper in the network: it hangs vertically on the tower, flexes in the wind, and is exposed to ultraviolet radiation, rain and temperature cycling each day of its service life. The cable is engineered for exactly that run, with a jacket and strength setup rated for outdoor deployment rather than adapted from an indoor patch cord.

Why the armored branch matters on a tower

The last meters of an FTTA run are the most vulnerable. Where this trunk breaks out into legs at the RRU end, standard 2.0mm tails may be crushed by clamps, chewed by rodents or pecked open by birds. Every leg of the assembly is sleeved in a helical stainless steel tube that keeps the branch flexible while adding real crush and bite resistance. The breakout point is potted and strain-relieved, so tower vibration and handling loads never reach the ferrule end-faces.

G.657.A1 glass in tight tower routing

Cable routing on a monopole or lattice tower rarely enables generous sweep bends. G.657.A1 bend-insensitive fiber tolerates a 10D static and 20D dynamic bend radius, so this cable may be dressed through cable glands, tight tray entries and the crowded junction box at the tower base without adding macrobend loss. The glass remains fully compatible with legacy G.652.D single-mode plant, which keeps the connection optical loss budget unchanged when this jumper connects into older feeder fiber.

LSZH jacket for mixed indoor-outdoor routes

Numerous FTTA runs start inside a hardware shelter, pass through a wall gland and continue outdoors up the tower. A single cable that is legal for the two zones simplifies the bill of materials: the low smoke zero halogen jacket meets indoor fire expectations while its UV-stabilized, chemically resistant compound handles years of outdoor exposure. There is no transition point, no extra enclosure, and one less splice in the optical budget.

Length options and customization

Standard length options are stocked for fast delivery: 1m (3ft), 2m (7ft), 3m (10ft), 5m (16ft), 10m (33ft), 20m (66ft), 30m (98ft) and 50m (164ft), covering the common shelter-to-tower and frame-to-radio runs this cord is built for. Made-to-order lengths beyond this range are manufactured to order. For tower runs, measure the path from the BBU patching field to the RRU port with this cable tray route included, then add working slack at the two ends; an accurately ordered length avoids a service loop hanging on the structure. Specifying the precise path length avoids the two the slack storage problem of an overlong cord and the strain risk of one that is too short.

Quality control and testing

Each assembly is terminated with precision zirconia ferrule connectors and optically tested before packing: insertion loss is verified against the 0.3dB ceiling and return loss against the 50dB minimum on every leg, not on a sample basis. End-face geometry is inspected for consistent physical contact, and this cable is proof-checked so that the delivered jumper may be plugged in and put into service without on-site rework.

Ordering and Factory Support

Refer to the LC-LC duplex FTTA series when ordering a quotation and state the path length and the breakout style necessary at the RRU end. For connector mixes other than LC to LC, or for non-standard breakout lengths, the custom FTTA program covers the identical cable platform; send the need with the inquiry and the factory will verify the manufacturable specification prior to production. Our UAE project support can review the requirement with Shenzhen production before a formal quotation is issued.