LP-500-2500

The LP-500-2500 is a high-performance, ultra-wideband Log Periodic Dipole Antenna (LPDA) designed for mission-critical directional coverage from 500 MHz to 2500 MHz. Enclosed in a ruggedized Fiberglass Radome, this antenna is a primary asset for a vast array of tactical and commercial applications, including UHF military communication, GSM/LTE cellular monitoring, and L/S-Band electronic warfare. Its non-loaded, fully welded 6063T6 aluminum architecture ensures a consistent 9 dBi gain and extreme mechanical survivability, making it the definitive choice for high-power jamming and strategic spectrum surveillance in the world's harshest environments.

Design: Wideband Precision & Environmental Hardening

The LP-500-2500 is engineered for operators who require a single, high-gain directional unit to bridge the gap between UHF tactical nets and modern high-speed data links.

• Fiberglass Radome Protection: The high-tech, tapered fiberglass enclosure offers exceptional RF transparency while providing a primary defense against corrosive saline air, acid rain, and ice formation. Its ruggedized design ensures survivability in extreme wind conditions up to 200 Km/Hr.
• High-Efficiency Unloaded Gain: By utilizing full-sized radiating elements without lossy loading techniques, the antenna maintains a highly efficient radiation pattern and a stable 9 dBi gain over 90% of the frequency band.
• Rapid Deployment Mounting: The mounting hardware is located at the back end of the antenna, allowing for fast installation on standard 51mm (2-inch) masts. This rear-mount design eliminates the risk of mast interference with the antenna's radiation pattern.

Construction: Industrial & Marine Grade

Constructed from 6063T6 architectural anodized aluminum alloy, the LP-500-2500 is built for strategic longevity.

• MIL-STD-810G Certified: The antenna is rigorously tested for high/low temperatures, shock, vibration, humidity, and salt fog. It is specifically designed to thrive in the most severe environmental conditions.
• All-Welded Integrity: Radiating elements are fully welded to the support booms to eliminate RF inter-modulation (PIM) and ensure permanent mechanical stability under intense vibration.
• Integrated D.C. Grounding: The system operates at D.C. ground, providing a low-resistance path for lightning protection and suppressing atmospheric static, resulting in an ultra-quiet noise floor for sensitive surveillance.

Reliability: 180W to 650W Power Capacity

With a standard 180 Watt power capacity (upgradeable to 650 Watts), the LP-500-2500 is robust enough for continuous-duty jamming and high-capacity data links. The focused 65-degree horizontal beamwidth ensures precision signal targeting, while the 17 dB Front-to-Back ratio provides excellent isolation for equipment located behind the antenna.

Technical Features

• Ultra-Wideband 500–2500 MHz: Replaces multiple antennas for UHF, GSM, 4G LTE, and S-Band.
• Rugged Fiberglass Radome: Elite protection against environmental degradation and mechanical shock.
• High-Efficiency 9 dBi Gain: Focused directional performance across the entire band.
• All-Welded 6063T6 Aluminum: Maximum durability and PIM-free performance.
• MIL-STD-810G Compliance: Engineered for the world's harshest tactical environments.
• Rear-End Mounting Plate: Fast installation on 51mm (2-inch) masts with optimized patterns.
• Marine Grade Stainless Hardware: Total corrosion resistance for naval and coastal use.
• High Power Capability: Standard 180W or optional 650W with DIN-Female termination.

Integration Guide: Maximizing Signal Success

1. Defeating Urban Multipath

In city centers, signals at 0.5–2.5 GHz reflect sharply off glass and concrete.

• The Solution: The focused 65-degree beamwidth of the LP-500-2500 acts as a directional spotlight, allowing an operator to isolate specific reflected paths and "null out" unwanted interference, ensuring a stable link or intercept.

2. Coaxial Selection for High Power

At frequencies up to 2.5 GHz, cable loss is the primary enemy of signal strength.

• Recommendation: Use low-loss cables like LMR-600 or corrugated copper feeders, especially if utilizing the 650W high-power option. Ensure the N-Female or DIN-Female termination is weather-sealed with professional-grade butyl tape.

3. Site Protection & F/B Ratio

In high-power jamming (EW) operations, "Self-Jamming" is a major risk. The 17 dB Front-to-Back ratio is critical; it ensures your own team and sensitive receivers behind the antenna remain functional while you project massive power at the target.

EW & Monitoring Guide: Urban SIGINT & Wideband Strategic Intercept

The LP-500-2500 is a specialized tactical asset for the 500–2500 MHz range. This spectrum is the most densely populated and high-value RF environment in existence, hosting UHF military tactical nets, GSM/CDMA, 4G LTE, and S-Band data links. In this range, radio waves behave with "optical" characteristics, making the LP-500-2500’s precision engineering a mandatory requirement for mission success.

1. Exploiting Urban Multipath & Polarization Rotation

At frequencies between 500 MHz and 2.5 GHz, signal wavelengths are short (60cm to 12cm). These waves reflect sharply off glass, metal, and concrete. Each reflection can cause the signal's polarization to shift or rotate entirely.

• The "Null" Problem: If a target's signal reflects off a building and arrives at your site horizontally polarized while your antenna is vertically fixed, you could experience a 20 dB signal loss—effectively losing the intercept.
• The Strategic Scan: The 65-degree horizontal beamwidth of the LP-500-2500 acts as an RF "spotlight." By scanning the horizon, an operator can identify the strongest reflected path (Multipath Exploitation) rather than just pointing at the target's direct coordinates.

2. Tactical Stealth: The Fiberglass Radome Advantage

In Electronic Warfare (EW), the Fiberglass Radome serves as more than just a weather shield—it provides a critical layer of "RF Camouflage."

• Visual Deception: Without a radome, an adversary with simple optics can see the orientation and size of the internal elements. They would immediately know if you are monitoring the low-UHF band (500 MHz) or the high-LTE band (2.5 GHz) based on which elements are active.
• Directional Obscuration: The tapered radome hides the exact "boresight" (pointing direction) of the antenna. This makes it impossible for an opponent to determine exactly which vehicle or building your team is currently targeting.

3. High-Power Jamming & J/S Ratio Optimization

To successfully disrupt a high-speed LTE data link or a tactical UHF repeater, you must achieve a superior Jamming-to-Signal (J/S) ratio at the victim’s receiver.

• Power Density Focus: The 9 dBi gain acts as a "magnifying glass" for your RF energy. Instead of scattering 180W (or 650W) in all directions, the LP-500-2500 focuses that energy into a tight 65-degree cone.
• Effective Radiated Power (ERP): This concentration exponentially increases your ERP. By focusing the energy, you can successfully "drown out" a legitimate signal from several kilometers away, even when the adversary is using high-power mobile transmitters.

4. "Quiet" Monitoring: D.C. Grounding & Static

At frequencies approaching 2.5 GHz, sensitive SIGINT receivers are highly vulnerable to "Noise Floor" elevation, which can mask low-probability-of-intercept (LPI) signals.

• Static Suppression: High-speed wind or dry air moving across the fiberglass radome creates "Precipitation Static" (P-Static). On an ungrounded antenna, this creates an electronic "hiss" that masks weak signals.
• The Solution: The LP-500-2500 is D.C. Grounded. It constantly bleeds off this static charge to the mast and earth, ensuring the lowest possible noise floor for detecting "hidden" or low-power transmissions.

High-Frequency Tactical Deployment Checklist

• Microwave Cable Selection: At 2500 MHz (2.5 GHz), cable loss is severe. Avoid standard RG-58. Use LMR-400 or LMR-600. Every 3 dB of cable loss effectively cuts your jamming power or reception sensitivity in half.
• Boresight Alignment: Because the beamwidth is 65 degrees, a 35-degree error in alignment will drop your gain significantly. Use a compass to ensure the antenna is pointed exactly at the target sector for maximum intercept probability.
• Connector Weather-Proofing: Microwave connectors are highly sensitive to moisture. A single drop of water in the N-type or DIN connector will cause a massive VSWR spike. Use butyl rubber tape for a primary moisture seal on all outdoor connections.
• Line-of-Sight (LOS): At these frequencies, even heavy foliage or thin plywood can attenuate the signal by 10–15 dB. Always attempt to find an elevated position with a clear optical path to the target area.