LMR-900-DB Rugged Standard for Ultra-Low-Loss Direct Burial Installations
LMR-900-DB (Direct Burial) is a premium, high-performance Watertight coaxial cable engineered to provide the absolute minimum signal loss for long-distance RF transmission, while offering the robustness required for permanent, harsh environment installations. This Watertight coaxial cable is the definitive choice for critical infrastructure where performance cannot be compromised by distance or environmental factors. The robust, specialized Black Polyethylene (PE) jacket is engineered to resist moisture, abrasion, UV exposure, and environmental stress, allowing for safe, long-term underground installation without the need for conduit. To complete your installation, Soyuztec Trading offers customized cables with connectors, built to your exact specifications.
Direct Burial Watertight 50 Ohm RF Cables
LMR-900-FR features a large diameter and advanced dielectric for best-in-class attenuation among flexible cables; consequently, it’s the ideal choice for long cable runs where every fraction of a dB matters.Specifically, the watertight design incorporates a flexible water-sealing compound between the braid and the PE jacket.
| Feature | Value (US/Imperial) | Value (Metric) | Note |
| Impedance | 50 Ohms | 50 Ohms | Standard for RF/Wireless |
| Jacket Diameter | 0.870 in | 22.10 mm | Larger diameter for low loss |
| Jacket Material | Black PE (Polyethylene) | Black PE | Direct Burial rated |
| Min. Bend Radius (Install) | 9.0 in | 228.6 mm | Less flexible than smaller cables |
| Velocity of Propagation (VoP) | 89% | 89% | Extremely low dielectric loss |
| Shielding Effectiveness | >90 \text{ dB}$ | >90 dB | Excellent interference rejection |
| Attenuation @ 900 MHz | 1.5 dB100 ft | 4.9 dB 100 m | Highlight the low loss benefit |
Ideal Applications
- Long-Run Antenna Feeder Systems: Connecting antennas to remote radio equipment (e.g., cell towers, broadcast sites) over distances where smaller cables experience too much loss.
- Base Station Infrastructure: Primary backbone and interconnection in high-power cellular, LMR (Land Mobile Radio), and WiMAX base stations.
- Permanent Outdoor/Rooftop Installations: Its UV and weather-resistant jacket ensures durability on tower sites and exposed building tops.
- Oil & Gas and SCADA Systems: Reliable data transfer in remote, harsh industrial environments.
- Defense & Tactical Communications: Reliable, high-performance links for mission-critical operations.
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