APT-4734

The APT-4734 is the high-gain flagship of the NATO Band IV microwave series, featuring a massive 1.6-meter reflector designed for long-distance link stability and elite signal precision.

Advanced Features and Precision

The APT-4734 is a high-performance tactical microwave antenna engineered for the 4400–5000 MHz range (NATO Band IV). Its primary feature is a large 1.6-meter (5.3 feet) diameter parabolic reflector that produces an incredibly narrow 3.0-degree half-power beam-width. This surgical precision is further enhanced by an integrated +/-5 degrees elevation tracking mechanism, allowing operators to fine-tune the vertical signal path for long-range point-to-point links. Designed for both tactical and fixed-station use, the antenna allows for seamless switching between vertical and horizontal polarization to adapt to specific mission requirements.

Rugged Construction and Durability

Built to survive the most punishing environmental conditions, the APT-4734 is fabricated from 6063T6 ultra-corrosion-resistant architectural anodized aluminum alloy. The structure is finished with a powder-coated olive army green paint to provide a secondary layer of protection against the elements. It is fully compliant with MIL-STD-810G standards, having undergone rigorous testing for salt fog, heavy rain, and extreme temperatures ranging from -40°C to +80°C. Despite its large aperture, the antenna maintains a wind rating of 160 Km/Hr, and all hardware is made of marine-grade stainless steel to prevent oxidation in coastal or humid environments.

Operational Efficiency

Efficiency in the APT-4734 is defined by its massive 33.5 dBi mid-band gain, which provides the high link margin necessary for long-distance high-bandwidth data transmission. With a 32 dB Front-to-Back ratio, the antenna effectively isolates the intended signal and eliminates interference from co-sited equipment. The system is designed for field efficiency; while its size requires two operators for safe installation, the quick-fastener system for the primary feed and the direct D.C. ground for lightning protection ensure that the link is both fast to deploy and electrically secure against noise and surges.

RF & Electrical Performance

• Broadband Coverage: Operates across the full NATO Band IV (4.4 – 5.0 GHz).
• Elite Isotropic Gain: Delivers a powerful 33.5 dBi mid-band gain for long-haul microwave relay.
• Ultra-Narrow Beam: Features a 3.0° (+/-1.5°) half-power beam-width for high-security, directional communication.
• Superior Isolation: 32 dB Front-to-Back ratio ensures maximum signal rejection from the rear and sides.
• Power Handling: Capable of handling up to 100 Watts of RF power.
• Lightning Protection: Integrated D.C. Grounding provides a low-resistance path for discharge and noise immunity.

Mechanical & Structural Design

• Large Aperture Reflector: 1.6-meter (5.3-foot) diameter grid parabolic dish for maximum signal capture.
• Elevation Tracking: Integrated +/-5° elevation adjustment for precise vertical alignment over long distances.
• Premium Materials: Constructed from 6063T6 Anodized Aluminum Alloy with Marine Grade Stainless Steel fasteners.
• Polarization Flexibility: Field-adjustable for Vertical or Horizontal polarization via rear mounting hardware.
• Weight & Mounting: Gross weight of 22 Kgs, mountable on pipes up to 52 mm (2 inches) in diameter.

Environmental & Global Compliance

• MIL-STD-810G Testing: Compliant with standards for Salt Fog (Method 509.5), Rain (Method 506.5), and Shock (Method 516.6).
• Thermal Resilience: Operational in temperatures from -30°C to +70°C.
• Wind Loading: Rated for structural integrity in winds up to 160 Km/Hr.
• Ingress Protection IP66: Designed to withstand high humidity and blown rain, ensuring the feed remains operational in monsoon conditions.

EU Environmental & Safety Compliances

To meet international regulatory and environmental safety standards for global deployment, the antenna adheres to the following:

• RoHS Compliant: Restricted use of hazardous substances (Lead, Mercury, Cadmium, etc.) in all electronic components and solder joints.
• REACH Compliant: Ensures all chemical substances used in the fiberglass radome are registered and safe for human health and the environment.
• WEEE Directive: Designed for high-end lifecycle management with recyclable aluminum and copper materials, facilitating sustainable disposal.
• CE Mark: Fully compliant with EU safety, health, and environmental protection requirements.

The APT-4734 is a high-gain flagship within the NATO Band IV microwave series. With its massive 1.6-meter (5.3-foot) reflector, it is engineered to provide the high "link margin" required for long-distance data trunks and high-capacity tactical backhaul.

Key Advantages

• Extreme Isotropic Gain (33.5 dBi): The standout advantage of the APT-4734 is its massive 33.5 dBi gain. This allows for significantly longer "hops" between radio relay stations, reducing the need for intermediate repeaters in difficult terrain and ensuring stable high-speed data transmission over vast distances.
• Precision Targeting (3° Beam-width): By focusing RF energy into an ultra-narrow 3-degree beam, the antenna ensures that the signal is concentrated solely on the receiver. This high directivity makes the link extremely difficult to intercept or jam from the side, providing an inherent layer of electronic security (TRANSEC).
• Integrated Elevation Tracking (+/-5°): Large-aperture antennas require absolute precision in alignment. The built-in elevation tracking mechanism allows operators to make fine vertical adjustments without moving the entire mast. This is essential for long-range links where even a 1-degree misalignment at the source can result in total signal loss at the destination.
• High Interference Rejection (32 dB F/B Ratio): In "congested" electromagnetic environments—such as a central command hub with dozens of active radios—the 32 dB Front-to-Back ratio ensures the antenna does not pick up noise from behind or the sides. This leads to a much cleaner signal and higher throughput.
• Superior Environmental Hardening: Designed for high-salinity and high-humidity environments, the anodized 6063T6 aluminum and marine-grade stainless steel construction ensure the antenna remains operational for decades. It is fully tested to MIL-STD-810G for salt fog, rain, and thermal shock.

Key Applications

1. Strategic Microwave Backhaul

The APT-4734 serves as the primary "data pipe" for divisional headquarters. It is used to carry massive volumes of encrypted data, including real-time C4I, high-definition ISR (Intelligence, Surveillance, and Reconnaissance) video, and multi-channel VoIP across the battlefield.

2. Long-Range Coastal & Border Security

Due to its high gain and corrosion resistance, this model is the preferred choice for maritime surveillance. It can transmit high-resolution radar data from remote coastal towers back to a central operations center over long over-water spans where signal fading is common.

3. NATO Band IV Joint Operations

Fully compliant with NATO Band IV (4.4 - 5.0 GHz), the APT-4734 is a standardized solution for allied forces. It ensures that different national units can establish a unified, high-speed communication backbone during joint theater operations.

4. Electronic Warfare (EW) Defense

In a contested spectrum where the enemy is actively using jammers, the 33.5 dBi gain of the APT-4734 provides the necessary power to "burn through" interference. Its high directivity also minimizes the antenna's own electronic signature to side-looking enemy sensors.

5. Disaster Infrastructure Restoration

When fixed fiber-optic lines are severed during a conflict or natural disaster, a pair of APT-4734 antennas can be deployed to create an "instant" high-capacity wireless bridge, restoring critical internet and communication services to an entire region.

Technical Performance Summary