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The SDY-50-40 (1-5/8”) feeder cable is a high-performance coaxial cable designed for broadcast, TV, and communication systems. It features helical corrugated copper conductors, PE dielectric, and a rugged outer jacket, ensuring low attenuation and VSWR. With a maximum frequency of 3 GHz, it supports medium wave (15kW), FM (7kW), and TV (3kW) transmitters. Its lightweight structure, wide temperature tolerance (-55°C to +85°C), and flexible bending radii make it ideal for satellite stations, radar, and microwave relay systems in harsh environments.
Operates up to 3.00 GHz with a cutoff frequency of 3.10 GHz, ensuring reliable high-frequency signal transmission.
Low DC resistance (0.40 Ω/km inner, 0.12 Ω/km outer) minimizes power loss and enhances efficiency.
Supports peak power ratings up to 15kW (medium wave), 7kW (FM), and 3kW (TV), tailored for diverse transmitters.
Robust helical corrugated copper conductors and PE insulation ensure durability and stable impedance (50Ω ±0.5).
Wide operational temperature range (-55°C to +85°C) suits extreme environments, from arctic to desert conditions.
Flexible installation with single/multiple bending radii of 180mm/550mm and lightweight design (1560 kg/km).
| Recommended peak power rating and application scope | |||
| Peak power rating | Wave band | Frequency(Channel) | Works with |
| ≤ 15kW | Medium wave | 550kHz - 1600kHz | Broadcast transmitter |
| ≤ 7kW | FM | 87MHz - 108MHz | FM transmitter |
| ≤ 3kW | Decimeter wave | 1CH - 68CH | TV transmitter |
| Physical Dimensions | |||
| Inner Conductor | Helix Corrugated copper tube | 18.5 mm | |
| Dielectric | PE strip | 39.7 mm | |
| Outer conductor | Helix Corrugated copper tube | 46.5 mm | |
| Jacket | PE | 51.0 mm | |
| Cable Weight | 1560 Kg/Km | ||
| Minimum bending radius, single | 180 mm | ||
| Minimum bending radius, multiple | 550 mm | ||
| Permissible temperature range, installation | -40°C - +60°C | ||
| Permissible temperature range, operation | -55°C - +85°C | ||
| a Characteristics | |||
| Impedance | 50Q±0.5n | ||
| Velocity | 95% | ||
| Maximum operating frequency | 3.00GHz | ||
| Cut off frequency | 3.10GHz | ||
| Peak power rating | 270kW | ||
| DC breakdown voltage | 5.2kV | ||
| DC-resistance | |||
| Inner conductor | 0.40 Ω/km | ||
| 0uter conductor | 0.12 Ω/km | ||
| Capacitance | 70 pF/m | ||
