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Prices 21 % less for customers outside of EU (World Wide Shipping)

· Availability: OK
· Estimated delivery time: STOCK - IMMEDIATE SHIPPING

161,16 € (195,00 € TAX Inc.)
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BIG SIGNAL DeltaFlex
Redefining portable performance

Meet the BIG SIGNAL DeltaFlex — the next generation of portable antennas for SOTA, POTA, and field operations. Engineered for hams who love taking their radio adventures outdoors, the DeltaFlex delivers exceptional performance, true flexibility, and unmatched portability.


Key advantages

- Fully adaptable: Adjust its height, width, and angle to fit any environment — mountains, forests, beaches, or rooftops.
- Multi-band coverage (40–10 m): Switch bands instantly without changing antennas or using a tuner.
- Quick setup: Deploy in minutes with any 6–7 m (20–23 ft) mast. No tools, no hassle.
- Lightweight & durable: Only 500 g (1.1 lbs) and rated for up to 300 W — built to travel anywhere.


Why choose DeltaFlex

Experience full-wave performance on 40 meters for stronger signals and higher efficiency than traditional portable antennas.
Its closed-loop design ensures low-noise reception, while vertical polarization and a low radiation angle make it perfect for long-distance DX — even in challenging conditions.


Take it anywhere. Reach farther.
BIG SIGNAL DeltaFlex — your ultimate companion for true portable DXing.



Specifications:

· Bands: 40 / 20 / 15 / 10 meters (Selectable). *12/17/30 m. with tunner.
· Gain: 3.2 dBi (Free space).
· Polarization: Vertical.
· SWR: 1.1:1 ~ 2.0:1
· Maximum Power: 300 W. PEP.
· Total Width: 16 ~ 18 meters / 52.49
 ~ 59.06 ft.
· Minimum Required Mast Height: From 6 meters / 19.69 ft
· Weight: 500 grams. / 1.10231 lb 
· Wind Resistance: > 200 km/h. / 124.27 mph

Manufacturing:

· Mounting: Consists of 2 fiberglass insulators that, when tensioned with insulating cord, shape the antenna.
· Cable: BIG SIGNAL - Wire. Special copper cable with polyethylene (PE) sheath for excellent weather protection and mechanical resistance.
· Feed: PL-UHF.



Reviews

  1. Benjamín Leyva (XE1BLA)15 Oct, 2024 - 10:23

    De lo mejor que he comprado para operaciones de campo, montada en un mástil de 6 metros de altura trabajó muy bien las bandas ofrecidas.
    Enrollada cabe en cualquier bolso y muy ligera .
    De mis favoritas para trabajar POTA en México.
    No duden en comprar la suya !! 73

  2. Jose David (NP3JD) (NP3JD)29 Ene, 2024 - 10:59

    He tenido la oportunidad de probar la antena durante aproximadamente una semana y los resultados han sido altamente satisfactorios. Esta antena, diseñada para uso flexible tanto portátil como en base, abarca las bandas de 10, 15, 20 y 40 metros. Su instalación ha sido un éxito, logrando un montaje firme con un mástil de al menos 35 pies (11 metros) y vientos.

    Lo notable es que no se requiere un sintonizador adicional; simplemente cambiando la banda mediante el conmutador de la antena, evitas la necesidad de utilizar equipos adicionales. La antena es liviana y presenta terminaciones muy profesionales. La he instalado de forma independiente y he podido trabajar varios DX en distintos modos como CW, RTTY, FONIA y FT4 en las diversas bandas, ya sea con 100 watts o con un amplificador (HLA 300 Black RM Italy).

    Lo más impresionante es la calidad del sonido de recepción: nítido y prístino. En algunas ocasiones, he logrado ingresar a pile-ups con informes positivos. Esta antena resulta perfecta para actividades como POTA, BOTA, Field days, y otras situaciones donde se requiera una antena multibanda práctica, liviana, flexible y fácil de montar. Una vez sintonizada cerca de los 7.100 MHz, las demás bandas quedan afinadas automáticamente.

    En resumen, después de una semana de pruebas, la antena ha demostrado mantener consistentemente buenos resultados en DX y ha recibido excelentes informes. Comparto un enlace a un QSO entre Puerto Rico y España (EA5CCY) en fonía 20m: [enlace del video](https://youtu.be/FQXGEe8u0cU?si=k7D4UFr9vRzkW93O).

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QSO between NP3JD and EA5CCY using the BIG SIGNAL DeltaFlex.

The purchase of the products is always made on request. We manufacture all products, so manufacturing times can be added. That is why the final price of the purchase, as the final price of the shipping costs will be confirmed in an email sent afterwards.

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