LP-300-2500

The LP-300-2500 is a high-performance, ultra-wideband Log Periodic Dipole Antenna (LPDA) specifically engineered for precision directional communication across the 300–2500 MHz spectrum. Delivering a stable 9 dBi gain in a compact 0.7-meter frame, this antenna is a premier asset for monitoring and disrupting the most active frequency bands in the world, including UHF military links, GSM/LTE cellular, and S-Band data services. Its non-loaded, 6063T6 aluminum architecture ensures maximum radiation efficiency and mechanical integrity for both tactical mobile and permanent coastal installations.

Design: Wideband Versatility & Precision Focus

The LP-300-2500 is optimized for the signal-dense spectrum between 0.3 GHz and 2.5 GHz, where directional accuracy is paramount.

• Elite 9 dBi Gain: By utilizing a full-sized, non-loaded array design, the antenna achieves exceptional gain and a focused 65-degree horizontal beamwidth. This allows for extreme precision in signal targeting and significantly increased range compared to standard broadband antennas.
• Rear-End Master Mounting: The mounting bracket is welded at the back end of the dual booms. This "rear-mount" design ensures the antenna can be attached to a standard 51mm (2-inch) mast without the mast physically interfering with the radiation pattern or gain.
• Weatherproof Integrated Feed: The coaxial cable is sealed inside the support boom to prevent moisture ingress, ensuring long-term reliability in humid or rainy environments.

Construction: Combat-Ready Hardening

Constructed from 6063T6 architectural anodized aluminum alloy, the LP-300-2500 is built for rapid installation and extreme environmental survival.

• Marine-Grade Durability: All fasteners, including screws, nuts, and bolts, are made of marine-grade stainless steel. The entire unit is finished with a protective powder coating, providing superior resistance against salt spray and corrosive saline air in coastal regions.
• Direct D.C. Grounding: The system operates at D.C. ground, providing a low-resistance path for lightning protection and suppressing atmospheric static for a high-sensitivity "quiet" noise floor during sensitive SIGINT operations.
• Rugged Mechanical Stability: Extra spacers between the support booms improve mechanical durability, allowing the antenna to withstand wind loads up to 200 Km/Hr.

Reliability: 250W Continuous-Duty Power

With a 250 Watt power handling capacity, the LP-300-2500 is robust enough for continuous-duty jamming and high-capacity backbone links. The 17 dB Front-to-Back ratio ensures that the majority of RF energy is projected toward the target, protecting sensitive on-site equipment and personnel located behind the antenna.

Technical Features

• Elite 9 dBi High Gain: Focused 65-degree beamwidth for superior directional precision.
• Ultra-Wideband 300–2500 MHz Coverage: Replaces multiple antennas for UHF, GSM, and LTE.
• 250W High Power Handling: Optimized for electronic countermeasures (ECM).
• Rear-Mounting Agility: Permits quick polarization changes (Vertical to Horizontal) without mast interference.
• All-Aluminum 6063T6 Build: Lightweight (3.5 Kgs) yet capable of withstanding extreme environments.
• Marine Grade Hardware: Total corrosion resistance for naval and coastal use.
• Direct Ground Safety: Integrated lightning protection and enhanced noise immunity.
• Compact Logistics: Overall length of 700mm (27.5 inches) for easy transport and handling.

Integration Guide: Maximizing Signal Success

1. Mastering Cellular & Tactical Monitoring

The 300-2500 MHz range is home to most global cellular and tactical data links.

• The Advantage: The focused 65-degree beamwidth of the LP-300-2500 allows an operator to isolate a specific cell tower or tactical repeater in a crowded urban environment, reducing "background noise" from neighboring transmitters.

2. Tactical Jamming (EW) Strategy

At 250 Watts, the high gain acts as a directional "floodlight." This concentration of energy exponentially increases your Effective Radiated Power (ERP) on the target receiver, allowing you to successfully "drown out" adversary communications at extended ranges.

3. Polarization Agility

Most cellular and tactical systems are vertically polarized, but reflections off slanted roofs or hillsides can shift signal orientation. The LP-300-2500’s flexible mounting allows you to match the polarization of the incoming reflected wave to maintain a stable intercept.

Strategic EW & SIGINT Guide: 300–2500 MHz Multi-Band Mastery

The LP-300-2500 is a surgical strike tool for the 0.3 to 2.5 GHz spectrum. This range is the operational backbone for modern digital life and military coordination, hosting UHF military links, TETRA public safety, GSM/LTE cellular, and S-Band data services. At these frequencies, radio waves behave with "optical" precision, making the LP-300-2500’s high gain and directional accuracy mandatory for mission success.

1. High-Gain Directional "Spotlight"

In the 300–2500 MHz band, the RF environment is often "congested." A standard wideband antenna sees everything, which can overwhelm a receiver with background noise.

• The Precision Advantage: The 9 dBi gain and focused 65-degree horizontal beamwidth of the LP-300-2500 act as an RF "spotlight." This allows an operator to isolate a specific cell tower or a single tactical repeater while physically "nulling out" interference coming from the sides or rear.
• Range Extension: Every 6 dB of gain effectively doubles your reception range. The 9 dBi gain allows you to pull in weak tactical signals from distances where standard dipole antennas would only see static.

2. Defeating Urban Multipath & Polarization Rotation

Signals at these frequencies reflect sharply off glass, metal, and concrete. Each reflection can cause the signal's polarization to shift or rotate entirely.

• The "Null" Problem: Most tactical handhelds and vehicle whips are vertically polarized. If a signal reflects off a slanted roof, it may arrive at your site with a significant horizontal shift. A standard vertical antenna would experience a signal dropout of up to 20 dB.
• The Tactical Solution: The LP-300-2500 features a flexible mounting arrangement that allows operators to switch between Horizontal and Vertical polarization in seconds. This ensures you can match the orientation of the incoming reflected wave to maintain a stable, high-fidelity intercept.

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

To successfully disrupt a target link (e.g., a high-speed LTE data link or a 400 MHz trunked system), you must achieve a superior Jamming-to-Signal (J/S) ratio at the victim’s receiver.

• Power Density Focus: Instead of scattering 250W in all directions, the LP-300-2500 focuses that energy into a concentrated 65-degree cone.
• ERP Advantage: This concentration exponentially increases your Effective Radiated Power (ERP). You can successfully "drown out" a legitimate signal from several kilometers away, even when the adversary is using high-power mobile transmitters.

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

For sensitive SIGINT operations, the "Noise Floor" is the ultimate enemy. High-speed wind or dry air moving across antenna elements creates "Precipitation Static" (P-Static), which sounds like an electronic hiss in the receiver.

• The Solution: The LP-300-2500 is D.C. Grounded. It constantly bleeds off this static charge to the mast and earth. This ensures the lowest possible noise floor, allowing you to detect low-power "hidden" transmissions or frequency-hopping signals that would be buried in the static of an ungrounded antenna.

Tactical Deployment Checklist

• Rear-Mount Advantage: Since the mount is at the rear, you can use a standard metal mast without worrying about it distorting your signal. Ensure the mast is at least 51mm (2 inches) in diameter for stability.
• Microwave Cable Integrity: 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 30-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 connector will cause a massive VSWR spike. Use butyl rubber tape for a primary moisture seal on all outdoor connections.