The SmarTech 27DL2 is the Delta Loop that, above all, responds to the needs of those who are looking for a small, lightweight, and high-performing system.

It is a low-noise antenna and it is free from electrostatic noise. Thanks to its excellent signal-to-noise ratio and electrostatic noise rejection, the 27DL2 is perfectly efficient, even when other types of antennas are practically unusable. Additionally, the antenna can be mounted on a lightweight support such as a TV pole or small rotor, and it reaches its characteristic performance even at low heights above the soil.

The radiation patterns clearly demonstrate that the 27DL2 is suitable for both long-distance DX and medium/short-range contests. For more details, please refer to the antenna patterns.

This antenna boasts a flat VSWR curve, covering the whole 27 MHz band with less than VSWR 1.5:1

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.

The main structure of the antenna is made of an aluminum alloy EN AW-6060/82 UNI9006/1 (Anticorodal 60/100), which provides greater durability against aggressive atmospheric agents (ice, water, UV rays, fine dust, acid rain), and better resistance to the mechanical stresses of wind.

SmarTech antennas are also supplied, depending on the model and specific mechanical requirements, with parts in Aisi 304 stainless steel (Austenitic Stainless Steel UNI/EN 10088) and parts in steel compliant with the resistance classes designated by the EN ISO 898-1 standard: 2013.

The horizontal wire is one of the most important components of the antenna, as it carries the highest current, and the RF radiation is maximum. Therefore, the quality of the material determines the system efficiency to a great extent.

SMARTECH has focused its utmost care and efforts on producing a specific, special wire consisting of 99.99% pure copper with an antioxidation coating and insulated with a special polymer. The wire is also used in military and aerospace applications due to its excellent dielectric properties (better insulation than glass), abrasion and tear resistance, UV resistance, and chemical solvent attack resistance. It has an IDT of 8 kV and can operate at temperatures ranging from -65°C to +150°C.

A high-efficiency Gamma Match is used to adapt the 27DL2 (relative dielectric constant εr=2.0 @1 MHz - with better dielectric properties than fiberglass and polyethylene, and a dielectric strength of 600kV) to 50 ohms. The power rating can go up to 5 kW (optional).

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.

Ph. credits: Mr. Nicolas M. - FRANCE

My 2 el. Delta Loop Smartech during the Alfa Tango IPA activation of Piacenza province. Very easy to mount and operating in portable activity. Giuliano 1AT468 - ITALY

Hi, I wanted to congratulate you for the superb DL 2 el that I have assembled with satisfaction. SWR flat on the whole band. Excellent yield and reception. Thanks so much. Stefano 1DL109 - N. Italy

Ph. credits: Mr. Ioann V. - FRANCE

Hallo! Here is a photo of my 2 element delta loop Smartech under the snow and after the strong storm of last night. As you can see the antenna is perfectly intact. Giuliano 1AT468 - ITALY