LP-30-88

The LP-30-88 is a heavy-duty, military-grade Log Periodic Dipole Antenna (LPDA) engineered for high-power directional transmission and reception across the 30–88 MHz VHF band. Specifically designed for tactical ground-to-ground and ground-to-air communications, this antenna is a primary asset for SINCGARS, tactical frequency hopping, and high-wattage jamming. Its non-loaded, all-aluminum 6063T6 architecture ensures a consistent 8 dBi gain and extreme mechanical survivability, while its foldable, segmented design allows for rapid deployment in under 10 minutes.

Design: Tactical VHF Power & Rapid Deployment

The LP-30-88 is optimized for the lower VHF spectrum where long-range, rugged communication is vital for theater-level operations.

• High-Power Capacity: The standard version handles 500 Watts, while the LPHP-30-88 high-power variant utilizes Times Microwave FBT-400 coaxial cable and specialized connectors (DIN-Female or 1 5/8” EIA) to handle a massive 4KW power rating.
• Rapid Tactical Logistics: Despite its large 5m x 5m footprint, the antenna features foldable elements and a segmented design. With a shipping length of only 2.6 meters, it is highly mobile and can be fully assembled by two technicians in less than 10 minutes.
• Unloaded Element Integrity: By avoiding lossy loading techniques, the LP-30-88 maintains a stable 6 to 8 dBi gain across the entire bandwidth, providing superior directional performance for frequency-hopping tactical radios.

Construction: Combat-Tier Hardening

Constructed from 6063T6 architectural anodized aluminum alloy, the LP-30-88 is built for a long service life in the world’s harshest combat zones.

• MIL-STD-810G Certified: Rigorously tested for extreme temperature, shock, vibration, humidity, and salt fog, ensuring the antenna remains operational in monsoon, desert, or coastal environments.
• Marine-Grade Hardware: All fasteners are 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.
• Polarization Agility: The center-boom mounting arrangement allows for rapid switching between Horizontal and Vertical polarization, essential for matching signal types in diverse tactical scenarios.

Technical Features

• Tactical 30–88 MHz Bandwidth: Ideal for SINCGARS, tactical VHF nets, and low-band jamming.
• Massive 4KW Power Handling: Optional LPHP version for high-intensity Electronic Warfare.
• High-Efficiency 8 dBi Gain: Consistent directional precision for long-range communication.
• MIL-STD-810G Compliance: Engineered for extreme environmental survivability.
• Fast 10-Minute Assembly: Foldable/segmented elements for streamlined tactical logistics.
• Center-Boom Mounting: Fits heavy-duty masts from 63mm to 100mm (2.25-4 inches).
• Direct Ground Protection: Integrated lightning protection and enhanced noise immunity.

Integration Guide: Dominating the Tactical VHF Spectrum

1. Defeating Signal Fading & Obstacles

At 30–88 MHz, signals have long wavelengths that can "diffract" or wrap over hills and around large obstacles.

• The Polarization Advantage: Tactical ground units typically use vertical whips. However, in heavy terrain, reflecting signals can rotate. The LP-30-88’s ability to switch to horizontal polarization can often "find" a cleaner signal path in mountainous or heavily forested regions.

2. High-Power Jamming (EW) Strategy

With the 4KW optional power handling, the LP-30-88 becomes a formidable Electronic Countermeasure (ECM) tool. The wide 95-degree horizontal beamwidth allows for broad-sector suppression of enemy tactical nets, ensuring total dominance over a large operational area.

3. Site Protection & Safety

Projecting 4KW of VHF energy requires strict site safety. The 15 dB Front-to-Back ratio is critical for protecting the SIGINT team and their equipment. By focusing energy forward and "nulling" it behind the boom, you ensure that your own command-and-control links remain operational while jamming the target.

EW & Monitoring Guide: 30–88 MHz Tactical VHF Dominance

The LP-30-88 is a specialized strategic asset for the 30–88 MHz range, the primary spectrum for military tactical VHF networks (including SINCGARS). In this frequency band, radio waves exhibit "ground-wave" and "sky-wave" characteristics that allow for beyond-line-of-sight communication. For Electronic Warfare (EW) and SIGINT, the LP-30-88 provides the raw power and directional precision needed to dominate the tactical battlespace.

1. Exploiting Ground-Wave & Diffraction

Signals in the 30–88 MHz range have long wavelengths (3.4 to 10 meters). These waves have the unique ability to "diffract" or bend over the horizon and around large obstacles like hills and mountains.

• The Polarization Advantage: While most tactical vehicle whips are vertically polarized, terrain and foliage can cause significant signal rotation.
• Tactical Diversity: The LP-30-88’s ability to switch between Horizontal and Vertical polarization allows an operator to optimize for the strongest signal path. In a heavily forested or mountainous region, horizontal polarization can often "find" a cleaner path with less attenuation than a standard vertical whip.

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

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

• 4KW Strategic Power: With the LPHP-30-88 (4KW) option, this antenna becomes a formidable wide-area suppressor. The 95-degree horizontal beamwidth acts as a massive RF "floodlight," allowing a single site to deny communication to an entire enemy battalion or mechanized company.
• 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 sync with the hopping frequency, effectively "blacking out" their command and control.

3. SIGINT "Fingerprinting" at Long Range

The LP-30-88’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.
• Source Identification: 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.

• 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 high-frequency (HF) command links from being overwhelmed by their own transmission.

Tactical Deployment Checklist

• High-Power Cable Management: For the 4KW version, use the supplied Times Microwave FBT-400 cable. At these power levels, standard coax will melt. Ensure all DIN-Female or 1 5/8” EIA connectors are clean and torqued to prevent arcing.
• Rapid 10-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 power reflection.
• Mast Stability & Grounding: At 30 Kgs and 5 meters in length, the antenna requires a heavy-duty mast (up to 4 inches). Ensure the Direct Ground is connected to a copper earth stake to bleed off static and provide lightning protection for the expensive 4KW transmitter.
• Polarization Matching: Always verify the polarization of the target net. If the adversary is using aircraft (vertical whips) or ground relays (sometimes horizontal), match the LP-30-88 orientation to maximize intercept probability.