144 Fibers OM4 Multimode 50/125 PSP Steel Tape Armored Figure 8 Aerial Optical Fiber Cable Self-Supporting GYTC8S

The GYTC8S Figure 8 Aerial Optical Fiber Outdoor Cable is a classic metallic-strength, self-supporting loose-tube outdoor figure-8 fiber optic cable. It is widely deployed for direct aerial installation without requiring a separate messenger wire.

Its integrated "8" cross-section unites the optical transmission unit and the high-tensile galvanized steel messenger in one continuous HDPE outer sheath, making it a cost-efficient, high-reliability workhorse for global telecom aerial network construction. GYTC8S Figure 8 Aerial Optical Fiber Outdoor cable capacity ranges from 2 fibers up to 288 fibers.

This is a heavy-duty armored outdoor self-supporting figure-8 multimode aerial cable, which combines laser-optimized OM4 50/125μm multimode fiber with the rugged steel-tape armored GYTC8S integrated 8-shaped aerial structure.

It is widely used for outdoor aerial interconnection between data center buildings, industrial park high-speed 40G/100G backbone aerial links, campus cross-building high-speed network access, and outdoor high-definition monitoring network backhaul scenarios that require high mechanical protection and high-speed multimode transmission.

• Attenuation: ≤3.0~3.5 dB/km at 850nm, ≤1.0~1.5 dB/km at 1300nm, fully meeting the low-loss requirements for high-speed multimode transmission.
• Bandwidth: Effective Modal Bandwidth ≥4700 MHz*km at 850nm, Overfilled Launch Bandwidth ≥3500 MHz*km at 850nm, far exceeding the performance of OM3 multimode fibers.
• Transmission Capability: Supports 10GBase-SR 10 Gigabit Ethernet up to 550 meters, 40G/100G high-speed transmission up to 150 meters, and is fully backward compatible with 1G/4G/8G/16G/25G Fibre Channel protocols, perfectly matching low-cost VCSEL light source systems.

The cable strictly conforms to IEC 60793-2-10 A1a.3 OM4 multimode fiber standard, YD/T 1155 Chinese 8-figure self-supporting cable industry standard, and IEC 60794-1-2 international optical cable generic specification, with CE, RoHS and ISO9001 certifications for global project delivery.

• Optical Unit — OM4 Multimode Fibers: 2~144 pieces of IEC 60793-2-10 A1a.3 standard OM4 50/125μm laser-optimized multimode fibers, with 250μm UV-cured dual acrylate coating, strictly color-coded per TIA-598-A standard for easy identification and quick termination.
• High-modulus PBT Loose Tubes: Each tube holds up to 12 OM4 fibers, made of hydrolysis-resistant high-strength PBT material. The tubes are fully filled with non-dripping thixotropic water-blocking gel, which buffers mechanical stress, isolates moisture, and reserves precise fiber excess length to ensure zero extra strain on fibers during bending or tension.
• Non-hygroscopic Filler Ropes: When the number of loose tubes is insufficient to form a full circular stranding layer, high-tensile non-water-absorbent filler ropes are added to maintain the roundness and structural stability of the stranded cable core.
• Central Metallic Strength Member: A solid high-tensile galvanized steel wire runs through the geometric center of the stranded cable core, providing the core tensile rigidity for the entire optical transmission unit, preventing fiber strain under long-term aerial suspension load.
• S-Z Reverse Stranding Layer: All loose tubes and filler ropes are stranded around the central strength member with optimized S-Z reverse stranding technology, which further reserves sufficient fiber redundancy and effectively avoids fiber damage caused by axial tension.
• Full-section Water-blocking System: Special water-blocking yarn is laid between the stranded layers, and a high-expansibility water-blocking tape fully wraps the entire stranded core, completely blocking any longitudinal water migration inside the cable.
• Longitudinal APL Moisture Barrier: A thin layer of aluminum-polyethylene (APL) laminated tape is longitudinally wrapped around the water-blocking tape, forming the first sealed moisture barrier to block lateral moisture ingress.
• Corrugated PSP Steel Tape Armor: A layer of double-sided plastic-coated corrugated steel tape (PSP) is longitudinally wrapped outside the APL layer, forming the second heavy-duty mechanical protection barrier. This layer drastically enhances the cable's anti-crush, anti-impact and anti-rodent performance, making it far more rugged than non-armored GYTC8Y variants.
• Upper Load-bearing Messenger Unit: A high-strength 1.2~1.6mm diameter 7-strand galvanized steel messenger wire is embedded in the upper circular loop of the 8-shaped profile. It bears 100% of the aerial suspension tensile load, with long-term allowable tensile force up to 4000N and short-term peak tensile force reaching 9000N, supporting a maximum safe aerial span of 80 meters.
• Lower Armored Optical Unit Sheath: The PSP-armored cable core is fully encapsulated in the lower circular loop of the 8-shaped profile, with the sheath tightly bonded to the PSP armor layer to form a reliable steel-polyethylene (S) integrated sealed structure.
• Integrated UV-resistant HDPE Outer Sheath: The upper steel messenger and lower armored cable core are co-extruded into one continuous black high-density polyethylene (HDPE) sheath, mixed with UV stabilizers and anti-aging additives. The sheath thickness is strictly controlled to meet 30+ years of outdoor weather resistance requirements, with typical overall dimensions ranging from 10.6×20.8mm (2~20 cores) to 13.5×24.5mm (144 cores).

• Ultra-high Tensile Performance
• S-Z Reverse Stranding Layer
• Full-section Water-blocking System
• Dual Barrier Armored Protection Layer: Longitudinal APL Moisture Barrier, Corrugated PSP Steel Tape Armor
• Integrated 8-shaped Outer Sheath System: Upper Load-bearing Messenger Unit, Lower Armored Optical Unit Sheath
• Integrated UV-resistant HDPE Outer Sheath

• Data Center Campus Outdoor Inter-building High-speed Links
• Industrial Park & Smart Factory Outdoor 10G/40G Backbone Aerial Network
• Campus & University Outdoor High-speed Monitoring & Network Backbone
• Smart City Street Lamp Integrated Communication Network
• Large-scale Event & Temporary High-speed Network Emergency Deployment
• Mountainous & Remote Scenic Area High-speed Monitoring Backhaul

We offer full OEM and ODM services. If you would like to display your own brand logo on the goods — such as on the cable, package bag, label, or anywhere else — we can accommodate your requirements. Our OEM and ODM service is always ready to assist.

According to standard export packing:

• Carton box
• Wooden box
• Wooden pallet

• International express such as UPS, TNT, DHL, etc.
• International air: CA, AA, EA, etc.
• By sea