LP-135-470

Overview: LP-135-470 High-Gain Tactical Log Periodic Dipole Antenna

The LP-135-470 is a professional-grade, wideband Log Periodic Dipole Antenna (LPDA) engineered for the 135–470 MHz frequency spectrum. Delivering a potent 11 dBi gain and a high 300-Watt power handling capacity (expandable to 1.5 KW), this directional array is a premier solution for tactical VHF/UHF communications, spectrum monitoring, and high-intensity jamming. Built from architectural-grade 6063T6 aluminum, the LP-135-470 provides a flat gain response across its entire bandwidth without the use of lossy loading techniques, ensuring maximum efficiency for mission-critical operations.

Tactical Durability & Field Deployment

Hardened construction designed for rapid assembly in punishing environments. The LP-135-470 is optimized for "man-portable" and mobile tactical theaters. The system features removable, two-segment elements and a specialized mounting arrangement that allows for full assembly in less than 5 minutes. To survive extreme environmental stress, the antenna is finished with an epoxy-based powder coating and uses reinforced spacers between support booms to enhance mechanical rigidity. Its 200 Km/Hr wind rating and military green finish ensure low visibility and structural integrity in high-vibration and corrosive coastal settings.

Operational Efficiency

Broadband precision and signal integrity achieved through high-quality materials. By utilizing square tube aluminum support booms and round tube radiating elements, the LP-135-470 maintains high structural symmetry. This geometry results in a highly directional radiation pattern with a 18 dB Front-to-Back ratio, effectively isolating the target signal from background noise and rearward interference. The antenna operates at D.C. ground, providing a direct low-resistance path to protect sensitive radio equipment from lightning-induced surges and static noise.

Detailed Technical Features: LP-135-470 Tactical Log Periodic Antenna

• Wideband Spectrum Dominance: Engineered for continuous, high-performance operation from 135 MHz to 470 MHz, providing a "single-antenna" solution for the entire VHF and UHF tactical bands without the need for field tuning or element adjustment.
• Pure Dipole Performance: Utilizes a full-size dipole array without lossy loading coils or matching stubs, ensuring a flat, consistent 11 dBi gain response across the entire operating bandwidth.
• High-Intensity Power Handling: Standard architectural design supports a continuous 300 Watts RF power handling capacity, with a factory-available upgrade option for 1.5 KW to support high-power broadcast or strategic jamming.
• Rapid Tactical Deployment: Features a modular design with a specialized mounting arrangement that enables a complete field assembly in less than 5 minutes, critical for "move-and-strike" tactical operations.
• Optimized Aperture Precision: Delivers a highly directional beam with a 50-degree horizontal and 45-degree vertical beamwidth, facilitating accurate emitter triangulation and long-range link stability.
• Lightning & Static Mitigation: Operates at D.C. ground with a low-resistance discharge path, shielding sensitive receivers from static noise and lightning-induced surges.
• Superior Signal Isolation: Achieves an 18 dB typical Front-to-Back ratio, effectively suppressing rearward interference and background noise to ensure maximum signal-to-noise (SNR) ratios.
• Architectural-Grade Construction: Built using 6063T6 anodized aluminum alloy with square tube booms (25.4mm) and round tube elements (12.7mm) for a superior strength-to-weight ratio.
• Marine-Grade Hardware Suite: All assembly components, including nuts, bolts, and mounting brackets, are fabricated from High-Grade Stainless Steel to prevent galvanic corrosion in saline environments.
• Corrosion-Proof Coating: Finished with an Epoxy-based powder coating (Military Green), providing an additional barrier against chemical, UV, and salt-spray degradation in coastal or tropical theaters.
• Logistics-Friendly Profile: All elements are segmental and removable; the longest element is only 0.57 meters, allowing for a compact shipping length of 1.15 meters for easy transport via tactical vehicles or aircraft.

Detailed Environmental Specifications (MIL-STD-810G Hardened)

The LP-135-470 is rigorously tested and certified to survive the most punishing theater conditions:

• Thermal Extremes: Certified for continuous operation in temperatures ranging from -40°C to +80°C (MIL-STD-810G, Method 470.5/502.5).
• Wind Loading Performance: Aerodynamically optimized to maintain structural integrity and bore-sight accuracy in constant winds up to 200 Km/Hr.
• Humidity & Rain Resistance: Fully sealed against 0 to 95% Relative Humidity and high-velocity horizontal rain (Method 507.5/506.5).
• Mechanical Resilience: Tested for High-Impact Shock (Procedure IV) and Tactical Vibration (Procedure I), ensuring survivability during rough transit in off-road military vehicles.
• Saline & Chemical Defense: Salt Fog testing (Method 509.5) ensures the anodized aluminum and epoxy coating remain intact during long-term coastal deployments.
• Biological Resistance: Materials treated to resist Fungus Growth (Method 508.6), preventing structural degradation in dense jungle or humid tropical environments.

Key Advantages: LP-135-470 Strategic Superiority

• Flat Gain Response Across Wideband: Unlike traditional Yagi antennas that only peak at a specific frequency, the LP-135-470 provides a consistent 11 dBi gain across the entire 135–470 MHz spectrum. This ensures uniform performance for both VHF and UHF communications without the need for multiple antenna systems.
• Rapid Tactical Mobilization: The specialized design allows for a complete field assembly in less than 5 minutes. With two-segment removable elements and a compact 1.15-meter shipping length, it is the ideal aperture for "Quick-Reaction" tactical teams and mobile command units.
• Architectural-Grade Durability: Constructed from 6063T6 ultra-corrosion-resistant aluminum alloy and reinforced with extra spacers between support booms, this antenna is built to withstand extreme mechanical stress and high wind loads up to 200 Km/Hr.
• Total Environmental Protection: The dual-layer protection of architectural anodization followed by an epoxy-based powder coating ensures the antenna remains immune to salt-spray corrosion in coastal areas and chemical degradation in industrial theaters.
• High Power Projection: Capable of handling 300 Watts standard (and up to 1.5 KW optional), the LP-135-470 allows for high-intensity signal transmission, providing the "punch" required for long-range data links and high-power jamming.
• Direct Ground Lightning Safety: The antenna operates at D.C. ground, providing a low-resistance discharge path. This not only protects sensitive radio hardware from lightning strikes but also significantly reduces static noise for clearer reception.

Key Benefits: Operational Efficiency

• Logistics Simplification: A single LP-135-470 replaces the need for carrying multiple narrowband antennas, significantly reducing the weight and volume of a tactical gear load-out.
• Zero Loading Loss: Because the antenna uses a pure log-periodic dipole array rather than size-reduction loading coils, there is no internal signal loss, resulting in maximum radiation efficiency.
• High Signal-to-Noise Ratio (SNR): The 18 dB Front-to-Back ratio ensures that the antenna focuses exclusively on the target, effectively "nulling" out interference from the rear and sides.
• All-Weather Reliability: Certified to MIL-STD-810G, the antenna performs flawlessly in temperatures ranging from -40°C to +80°C, ensuring mission success in arctic, desert, or tropical environments.

Key Applications: Mission-Critical Deployments

• Tactical Communications: High-reliability wideband links for VHF/UHF ground-to-ground and ground-to-air tactical voice and data networks.
• Electronic Warfare (EW) & Jamming: Optimized as a directional high-power source for jamming tactical radio communications, RCIED triggers, and data links in the 135-470 MHz window.
• Signals Intelligence (SIGINT): Ideal for wide-spectrum monitoring, scanning, and direction finding (DF). Its high gain and narrow beamwidth allow for the precise triangulation of rogue emitters.
• Public Safety & Search and Rescue: Used by emergency response units for wideband interoperable communications during disaster recovery where multiple frequency bands are in use simultaneously.
• Mobile Command Posts: Mounted on vehicles or tactical masts to provide a rapidly deployable directional link for field headquarters and remote surveillance outposts.
• Coastal & Maritime Surveillance: Specifically designed for long-term deployment in saline environments to monitor maritime traffic and offshore communication bands.

EW, SIGINT & Monitoring Compatibility

• Electronic Warfare (EW): Acts as a high-intensity directional source for jamming VHF and UHF tactical data links and voice communications.
• Signals Intelligence (SIGINT): The highly directional 50° Horizontal / 45° Vertical beamwidth allows for accurate emitter triangulation and the interception of weak, long-range signals across a wide spectrum.
• Spectrum Scanning: Its broad frequency response (135-470 MHz) makes it a "single-antenna" solution for persistent monitoring and persistent situational awareness.

ELECTRICAL SPECIFICATIONS:

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