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BIG SIGNAL DL-20
Full-Wave Monoband Delta Loop for 20-Meter DX
Full-Wave Monoband Delta Loop for 20-Meter DX
The BIG SIGNAL DL-20 is a full-wave monoband Delta Loop antenna specifically developed for the 20-meter band, one of the most popular HF bands for long-distance DX communications.
Its combination of efficiency, clean reception, easy installation, and low weight makes it an excellent choice for permanent stations and especially for portable operation, expeditions, and POTA and SOTA activations.
Its combination of efficiency, clean reception, easy installation, and low weight makes it an excellent choice for permanent stations and especially for portable operation, expeditions, and POTA and SOTA activations.
Band: 20 meters
Configuration: Full-wave Delta Loop
Recommended Use: DX / Portable / POTA / SOTA / Expeditions
Installation: Quick and easy
Recommended Mast Height: approximately 7–8 m / 23–26 ft minimum
Configuration: Full-wave Delta Loop
Recommended Use: DX / Portable / POTA / SOTA / Expeditions
Installation: Quick and easy
Recommended Mast Height: approximately 7–8 m / 23–26 ft minimum
Key Features
• Full-Wave Design for 20 Meters
The DL-20 uses a full-wave closed loop, providing an efficient configuration for both transmit and receive while making full use of the 20-meter band.
The DL-20 uses a full-wave closed loop, providing an efficient configuration for both transmit and receive while making full use of the 20-meter band.
• Designed for DX
Its Delta Loop geometry and horizontal polarization provide radiation characteristics well suited for long-distance communications. Final takeoff angle will depend on installation height and local terrain conditions.
Its Delta Loop geometry and horizontal polarization provide radiation characteristics well suited for long-distance communications. Final takeoff angle will depend on installation height and local terrain conditions.
• Cleaner Reception
As an electrically closed loop, it can provide a favorable signal-to-noise ratio against certain types of interference and electrical noise, an especially useful characteristic when receiving weak DX signals.
As an electrically closed loop, it can provide a favorable signal-to-noise ratio against certain types of interference and electrical noise, an especially useful characteristic when receiving weak DX signals.
• Setup in Under 5 Minutes
Its mounting system is designed for rapid field deployment: raise the upper support point and tension the attachment points to form the loop and get the antenna ready for operation.
Its mounting system is designed for rapid field deployment: raise the upper support point and tension the attachment points to form the loop and get the antenna ready for operation.
• Ideal for Portable Operation
An especially practical solution for POTA, SOTA, expeditions, contests, and field operations, where a high-efficiency antenna that can be deployed quickly is a major advantage.
An especially practical solution for POTA, SOTA, expeditions, contests, and field operations, where a high-efficiency antenna that can be deployed quickly is a major advantage.
• Built for Outdoor Use
Manufactured from materials selected for repeated outdoor use, providing a lightweight, simple, and durable antenna system.
Manufactured from materials selected for repeated outdoor use, providing a lightweight, simple, and durable antenna system.
Why Choose a Delta Loop for 20 Meters?
• Full-wave element for the 20-meter band.
• Excellent choice for DX communications.
• Closed-loop design with a favorable signal-to-noise ratio under certain conditions.
• Full-wave alternative to dipoles and other wire antennas.
• Fast deployment for temporary installations.
• Especially well suited for POTA, SOTA, and DXpeditions.
20 Meters. Full Wave. Ready to Get on the Air.
The BIG SIGNAL DL-20 combines the advantages of a full-wave Delta Loop with the simplicity demanded by portable operation: quick to deploy, efficient, and designed for DX. A practical antenna for getting the most out of 20 meters at your home station or on your next activation.
Technical Specifications
Band: 14 MHz / 20-Meter Band
Gain: 3.37 dBi (Free Space)
Polarization: Horizontal
SWR: 1.1:1 – 1.5:1
Impedance: 50 Ω
Maximum Power: 1,000 W or 2,000 W, depending on version
Minimum Mast Height: approximately 7.5 m / 24.6 ft
Total Height: 6 m / 19.7 ft
Total Width: 7.2 m / 23.6 ft
Weight: 2 kg / 4.41 lb
Wind Survival: > 200 km/h / 124 mph
Gain: 3.37 dBi (Free Space)
Polarization: Horizontal
SWR: 1.1:1 – 1.5:1
Impedance: 50 Ω
Maximum Power: 1,000 W or 2,000 W, depending on version
Minimum Mast Height: approximately 7.5 m / 24.6 ft
Total Height: 6 m / 19.7 ft
Total Width: 7.2 m / 23.6 ft
Weight: 2 kg / 4.41 lb
Wind Survival: > 200 km/h / 124 mph
Power: available in 1,000 W and 2,000 W versions. Select the appropriate configuration from the available product options.
Configuration & Installation
• Full-Wave Delta Loop
Specifically designed for the 20-meter / 14 MHz band, the DL-20 uses a full-wave closed-loop element with horizontal polarization.
Specifically designed for the 20-meter / 14 MHz band, the DL-20 uses a full-wave closed-loop element with horizontal polarization.
• Installation Height
Requires a mast approximately 7.5 m / 24.6 ft minimum. Once deployed, the antenna occupies approximately 6 m / 19.7 ft in height and 7.2 m / 23.6 ft in width.
Requires a mast approximately 7.5 m / 24.6 ft minimum. Once deployed, the antenna occupies approximately 6 m / 19.7 ft in height and 7.2 m / 23.6 ft in width.
• Simple Deployment System
Its three-point support configuration allows the loop to be formed simply by raising and tensioning the antenna with support rope, making it suitable for both permanent installations and portable operation.
Its three-point support configuration allows the loop to be formed simply by raising and tensioning the antenna with support rope, making it suitable for both permanent installations and portable operation.
Construction & Materials
• Insulator System
Includes 3 fiberglass insulators that allow the Delta Loop geometry to be formed and maintained by tensioning the antenna with support rope.
Includes 3 fiberglass insulators that allow the Delta Loop geometry to be formed and maintained by tensioning the antenna with support rope.
• Feedpoint Enclosure
Made from anodized aluminum, providing a lightweight and durable solution for outdoor installations.
Made from anodized aluminum, providing a lightweight and durable solution for outdoor installations.
• BIG SIGNAL Wire
Special copper wire with a polyethylene (PE) jacket, designed to provide excellent weather protection and high mechanical durability for outdoor use.
Special copper wire with a polyethylene (PE) jacket, designed to provide excellent weather protection and high mechanical durability for outdoor use.
• RF Feed
50 Ω feed system with an SO-239 (UHF female) connector.
50 Ω feed system with an SO-239 (UHF female) connector.
Full-Wave Performance on 20 Meters at Just 2 kg / 4.41 lb.
The BIG SIGNAL DL-20 combines a full-wave loop for 14 MHz with lightweight construction and a simple deployment system. Weighing only 2 kg / 4.41 lb and available in versions rated up to 2,000 W, it is an especially attractive solution for DX, portable operation, POTA, SOTA, and expeditions.
Reviews
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Una antena muy sencilla de montar en portable, capta poco ruido, es liviana, sencilla de ajustar y da buenos resultados. La fabricación y los materiales utilizados para ello son de buena calidad. Tengo varias antenas de ésta marca y tanto el producto como la atención al cliente es muy positiva.
Ayer la monté en un mástil de 10m, roe 1.09 en 14.030 y 1.36 en 14.200. Nivel de QRM cero (también estoy en una aldea vacía). Pude hacer buenos DX y con grandes reportes. Relación calidad/rendimiento/precio imbatible. Eso sí, es monobanda de verdad, en el resto de bandas aunque recibe bien roe por las nubes.
Usamos desde el Radio Club Henares [EA4RCH] una DL-20 en algunos concursos Internacionales montandola en el patio del Radioclub logrando rescatar señales muy bajas y con bastante menos ruido, esta genial, fácil de montar.
Tras la compra de la Delta Loop de 40 metros para mis actividades y ver el rendimiento que me daba no lo pensé más y compré este modelo para la banda de 20 metros y muy contento. Recuerdo el primer día que la estrené que me llamó una estación de USA a mi actividad en una Ermita. También la monto en mi tejado para los concursos como antena de apoyo RX/TX. Suerte y que disfrutéis cómo yo con esta antena.
Las antenas tendidas en un árbol a menos de 3-4 metros del suelo y recibiendo señales de 59+. Cada aparición de C91GBA era romper esquemas. Impresionante el rendimiento en condiciones precarias, FT857 con 80 W.