A superb antenna.

The SmarTech 27DL4 is designed for important installations and for those who expect high-level performance from their equipment. It is a model that belongs to our Extreme Line range.

The SmarTech 'Extreme' product line is specifically engineered for high-performance applications, performing unique design elements, advanced materials, and advanced manufacturing processes that set them apart from our other product lines. Our Extreme Line products are designed and tested to withstand even the most challenging environments, with exceptional durability and resilience. We subject these products to rigorous electrical and mechanical testing using highly precise quality control processes to ensure that they meet the highest standards for performance andreliability.

An highly accurate numerical modeling, combined with a specialized mechanical structure, provides the 27DL4 with the two essential characteristics required for every antenna system: high performance and mechanical strength.

Although modeling software has become commonly used, achieving stable models with excellent performance is not solely the result of accurate calculations. It also requires particularly complex optimization techniques, which are especially critical for loop antennas with a high number of elements.
The SmarTech 27DL4 antenna is the result of several days of modeling work. The subsequent prototyping stage enabled the definition of the final physical model through further measurement and optimization cycles, ensuring perfect convergence between numerical and physical models.

In terms of mechanical engineering, the antenna is made using the SmarTech HD Technology, with parts even made of stainless steel and the best aluminum alloy. This results in a structure that is both elastic and exceptionally strong, providing the necessary support and stability for the antenna to perform at its highest level.

Aluminum systems offer a significantly longer lifespan and better resistance to wind loads compared to fiberglass structures. This ensures the antenna geometry (shape) remains intact, preventing sudden changes in impedance and efficiency, and maintaining overall performance levels.

The SmarTech 27DL4 Delta Loop antenna boasts excellent low noise qualities, thanks to its closed ring configuration and DC Grounded property of each element, which effectively eliminate electrostatic currents. This particular design ensures that the antenna maintains optimum efficiency even in conditions where other antenna systems fail.
Moreover, the absence of electrostatic currents, combined with the Gamma Match decoupling function, provides unparalleled protection against electric shocks to the RTX. These shocks can cause significant damage, or even complete destruction, to the transceiver's front-end stages.
The advanced design and engineering of the SmarTech 27DL4 offer superior performance and protection, even in the most demanding environments.

The SmarTech Delta Loop antennas are designed to achieve the best configuration for maximum forward gain, improved Front-to-Back ratio, improved Front-to-Side ratio, and a cleaner radiation pattern. This is possible because simulation approaches are not constrained by the limitations of 50 ohm (or any other) impedance configurations, as is the case with direct feed antennas using coaxial cable. The constraints imposed by specific project impedances significantly limit the selection of optimal solutions, which result in the adoption of lower-quality configurations with greater performance compromises.
The Delta Loop SmarTech antennas, on the other hand, are designed using the most advanced calculation methods. The impedance matching is performed by a specific and high-quality gamma match system, ensuring the best signal transfer and extremely high efficiency levels of the whole antenna system.

MATERIALS

The antenna main structure is made of aluminium alloy EN AW-6060/82 UNI 9006/1 (Anticorodal 60/100), which provides excellent long-term durability against the most severe weather (ice, water, UV rays, fine particles, acid rain), and better resistance to heavy wind load.

The Delta Loop is supplied with stainless steel parts AISI 304 (Inox Austenitic UNI / EN 10088) and steel S235JR2 (UNI 100 series), certified according to 2000/53 / CE + RoHs standards.

Insulators are made of Polypropylene PPC 5660, resistant to remarkable thermic excursions (certified for temperatures from -20°C to +130°C), with high load at break (ultimate tensile strength 25Mpa), excellent abrasion-resistant and volume resistivity > 1018

The horizontal wire is one of the most important components of the antenna. Here flows the highest current and RF radiation is maximum. Therefore the quality of the material most determines the system efficiency.

For this, SMARTECH has focused its utmost care and efforts for the production of a specific, special wire consisting of 99.99% pure copper with antioxidation coating and insulated with a special polymer.

The wire is also used for military and aerospace applications because of its excellent dielectric properties (insulation better than glass), abrasion and tear resistant, UV rays resistant, chemical solvent attack resistant. IDT 8 kV. Operating temperatures -65+150°C.

The antenna is made to obtain the maximum electrical efficiency, the best mechanical resistance and durability, thanks to its high quality materials. It is also suitable for installation in mountain areas and coastal (corrosive) areas.

SmarTech antennas are designed with the minimum necessary electrical/mechanical joints. So, parasitic resistances are the lowest possible so as to minimize unwanted RF dissipations.

In order to maintain its best performances, each Delta Loop is individually checked before shipment.

If shipping costs to your destination are not included during the ordering process, please contact us. We will send you a quotation for the fastest, safest and cheapest shipping solution.

Antenna is fantastic. Logbook full today including several south American contacts. Speaking to people others from my country couldn't even hear. Superb. This antenna can sniff out weak signals whilst ignoring local strong stations. To say I'm delighted with this antenna compared to my previous UK made 4 element Yagi is an understatement. Best money I've spent in a long time. 68FW029, Stan - N. Ireland

Setup by Mr. Serafino R. - Italy

Ph. credits: Mr. Luciano 1AT802 - ITALY

Ph. credits: Mr. Erich 13EK102 - GERMANY