LP-30-118

The LP-30-118 is a military-grade, high-gain Log Periodic Dipole Antenna (LPDA) engineered for relentless directional performance across the 30–118 MHz VHF spectrum. This frequency range is the operational backbone for legacy tactical ground nets, SINCGARS, and low-band military aviation. Built from 6063T6 architectural aluminum and featuring a rapid-deployment foldable design, it is a primary asset for high-power jamming, SIGINT, and wideband scanning in theater-level tactical environments.

Design: Tactical VHF Dominance & Rapid Logistics

The LP-30-118 is optimized for the lower VHF spectrum where long-range, rugged communication is a mission-critical requirement.

• Ultra-High Power Option: While the standard unit handles 500 Watts, the LPHP-30-118 variant is engineered for massive 4KW power handling. It utilizes specialized Times Microwave coaxial cables with low-density PTFE dielectric and DIN-Female connectors to sustain intense Electronic Countermeasures (ECM).
• Rapid Tactical Response: Despite its expansive 5-meter width, the antenna features foldable elements and a segmented design. Two technicians can fully assemble the array in less than 5 minutes, making it ideal for "jump" missions and mobile command posts.
• Non-Loaded Efficiency: By utilizing full-sized radiating elements rather than lossy loading techniques, the LP-30-118 maintains a stable 8 dBi gain and high radiation efficiency across the entire 88 MHz bandwidth.

Construction: Combat-Tier Hardening

Constructed from 6063T6 architectural anodized aluminum alloy, the LP-30-118 is built for a long service life in active combat zones.

• MIL-STD-810G Certified: Rigorously tested for extreme temperature, shock, vibration, and salt fog. It is specifically designed to thrive in coastal, monsoon, or desert environments.
• Marine-Grade Durability: All hardware is made of Type 316 marine-grade stainless steel. The entire array is protected by an epoxy-based Olive Green powder coating for total corrosion resistance in saline air.
• Integrated Safety: Operates at D.C. ground, providing a low-resistance path for lightning protection and suppressing atmospheric static for an ultra-quiet noise floor during sensitive SIGINT operations.

Technical Features

• Tactical 30–118 MHz Coverage: Replaces multiple antennas for legacy and modern tactical VHF.
• Massive 4KW Power Handling: Optional LPHP version for strategic high-intensity jamming.
• High-Efficiency 8 dBi Gain: Focused directional precision for long-range intercepts.
• Rapid 5-Minute Assembly: Foldable/segmented elements for streamlined tactical logistics.
• Shipping Length of 2.6 Meters: Fits easily into standard tactical transport containers.
• Center-Boom Mounting: Securely fits 50mm to 100mm (2-4 inch) heavy-duty masts.
• Polarization Agility: Permits both Vertical and Horizontal orientation. 

Integration Guide: Strategic VHF Intercept

1. Defeating Signal Diffraction

At 30–118 MHz, signals have long wavelengths that can bend or "diffract" over hills.

• The Tactical Edge: Most ground whips are vertical, but terrain causes polarization rotation. The LP-30-118’s ability to switch to horizontal polarization allows you to "find" the strongest signal path in mountainous or heavily forested regions.

2. High-Power Jamming (EW)

Projecting 4KW at 118 MHz allows for broad-sector suppression of enemy tactical networks. The 90-degree horizontal beamwidth acts as a directional floodlight, exponentially increasing your Effective Radiated Power (ERP) compared to an omnidirectional antenna.

3. Site Protection & Front-to-Back Isolation

High-power transmission requires site safety. The 15 dB Front-to-Back ratio ensures that while 4KW is projected at the target, the monitoring team behind the boom remains shielded, protecting their own sensitive SIGINT equipment.

Strategic EW & SIGINT Guide: 30–118 MHz Tactical VHF Dominance

The LP-30-118 is a heavy-duty tactical asset designed for the 30–118 MHz range, the primary spectrum for military tactical ground nets (including SINCGARS) and low-band military aviation. In this frequency band, radio waves exhibit unique propagation characteristics that allow for beyond-line-of-sight communication, making the LP-30-118’s raw power and directional precision a mandatory requirement for mission success.

1. Exploiting Diffraction & Ground-Wave Propagation

Signals in the 30–118 MHz range have wavelengths between 2.5 and 10 meters. These waves have the unique ability to "diffract"—literally bending over the horizon or around large obstacles like mountains and dense forests.

• The Polarization Advantage: While most tactical vehicle whips are vertically polarized, terrain and foliage can cause significant signal rotation.
• Tactical Diversity: The LP-30-118 allows operators to quickly switch to Horizontal polarization. In heavily wooded or mountainous terrain, this can often "find" a cleaner, stronger signal path that a standard vertical whip would miss entirely.

2. High-Power Jamming (EW) & J/S Ratio Optimization

To successfully disrupt an adversary’s frequency-hopping tactical net, you must achieve a superior Jamming-to-Signal (J/S) ratio at the victim’s receiver across a wide area.

• 4KW Strategic Power: With the LPHP-30-118 (4KW) option, this antenna becomes a formidable wide-area suppressor. Its 90-degree horizontal beamwidth acts as a massive RF "floodlight," allowing a single site to deny communication to an entire enemy sector.
• Denial of Service: By projecting 4000 Watts of focused energy, you saturate the victim's receiver front-end, making it impossible for their radio to maintain "sync" with a hopping sequence, effectively blacking out their command and control.

3. SIGINT "Fingerprinting" & Triangulation

The LP-30-118’s 8 dBi gain allows for the intercept of weak tactical signals from far beyond the range of standard monitoring stations.

• Distance Intercept: Every 6 dB of gain effectively doubles your reception range. The 8 dBi gain allows you to "hear" tactical nets and identify troop movements long before they enter your immediate operational area.
• Directional Intelligence: The directional pattern helps SIGINT teams "triangulate" the location of enemy command posts by identifying the exact bearing of the transmission.

4. Site Protection: The 15 dB Shield

When transmitting at 4000 Watts, "Self-Jamming" and RF safety are critical concerns for the operators and their equipment.

• The Rear "Null": The 15 dB Front-to-Back ratio ensures that while 4KW is projected at the enemy, the energy levels directly behind the antenna are significantly reduced. This protects the monitoring team’s own sensitive SIGINT receivers and command links from being overwhelmed by their own high-power transmission.

Tactical Deployment Checklist

• High-Power Cable Management: For the 4KW version, use the supplied Times Microwave low-loss cable. At these power levels, standard coax will overheat. Ensure all DIN-Female connectors are clean and torqued to prevent arcing.
• Rapid 5-Minute Assembly: Utilize the foldable elements. In a tactical "jump," speed is survival. Ensure the stainless steel studs are locked; at 5 meters wide, loose elements will degrade the VSWR and cause dangerous power reflection at high wattages.
• Mast Stability & Grounding: At 18 Kgs and 5 meters wide, the antenna requires a stable mast (up to 4 inches). Ensure the Direct Ground is connected to a copper earth stake to provide lightning protection and bleed off static.
• Polarization Matching: Always verify the polarization of the target net. If the adversary is using aircraft (vertical whips) or specialized ground relays (horizontal), match the LP-30-118 orientation to maximize intercept probability.