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BIG SIGNAL SpaceQuad
Portable Quad Antenna for VHF/UHF Satellite Operations
The BIG SIGNAL SpaceQuad is a portable directional antenna designed for satellite operations and terrestrial communications on VHF and UHF. Its low weight, compact dimensions, and quick assembly make it comfortable to operate with one hand during portable activations and satellite passes.
Bands: VHF / UHF
Optimized Frequencies: 145.8 MHz / 435.5 MHz
Elements: 2 Quad elements on VHF / 4 Quad elements on UHF
Impedance: 50 Ω
Weight: approximately 430 g / 0.95 lb
Boom Length: 56 cm / 22.05 in
Assembly: less than 5 minutes, no tools required
Recommended Use: Satellites / Portable / VHF-UHF
Optimized Frequencies: 145.8 MHz / 435.5 MHz
Elements: 2 Quad elements on VHF / 4 Quad elements on UHF
Impedance: 50 Ω
Weight: approximately 430 g / 0.95 lb
Boom Length: 56 cm / 22.05 in
Assembly: less than 5 minutes, no tools required
Recommended Use: Satellites / Portable / VHF-UHF
Key Features
• Extremely Lightweight and Easy to Handle
At approximately 430 g / 0.95 lb, the SpaceQuad can be comfortably operated with one hand during extended satellite passes.
At approximately 430 g / 0.95 lb, the SpaceQuad can be comfortably operated with one hand during extended satellite passes.
• Compact Design for Portable Operations
Its boom measures only 56 cm / 22.05 in, making it easy to transport while providing a directional VHF/UHF antenna without the need for a bulky structure.
Its boom measures only 56 cm / 22.05 in, making it easy to transport while providing a directional VHF/UHF antenna without the need for a bulky structure.
• Fast, Tool-Free Assembly
The antenna can be ready for operation in less than 5 minutes, simplifying field activations, portable operation, and quick satellite setups.
The antenna can be ready for operation in less than 5 minutes, simplifying field activations, portable operation, and quick satellite setups.
• Full-Wave Quad Elements
The SpaceQuad incorporates 2 Quad elements for VHF and 4 Quad elements for UHF, optimized for the satellite segments around 145.8 and 435.5 MHz.
The SpaceQuad incorporates 2 Quad elements for VHF and 4 Quad elements for UHF, optimized for the satellite segments around 145.8 and 435.5 MHz.
• Direct 50 Ω Feed
Its design provides a nominal impedance of 50 Ω, eliminating the need for additional impedance transformers.
Its design provides a nominal impedance of 50 Ω, eliminating the need for additional impedance transformers.
• Stable Performance During Satellite Passes
The Quad geometry can provide favorable polarization behavior during satellite operation, helping maintain more stable signals as orientation and polarization change throughout a pass.
The Quad geometry can provide favorable polarization behavior during satellite operation, helping maintain more stable signals as orientation and polarization change throughout a pass.
SpaceQuad Advantages
• Only approximately 430 g / 0.95 lb.
• Compact boom measuring just 56 cm / 22.05 in.
• Assembly in less than 5 minutes.
• 2 Quad elements on VHF.
• 4 Quad elements on UHF.
• Direct 50 Ω feed.
• Designed for satellite and portable VHF/UHF operation.
• Compact boom measuring just 56 cm / 22.05 in.
• Assembly in less than 5 minutes.
• 2 Quad elements on VHF.
• 4 Quad elements on UHF.
• Direct 50 Ω feed.
• Designed for satellite and portable VHF/UHF operation.
True Portability for Satellite Operation.
BIG SIGNAL SpaceQuad – a lightweight, compact, and fast-deploying VHF/UHF Quad antenna designed to enjoy satellite communications from virtually anywhere.
Technical Specifications
Frequencies: 145.8 MHz / 435.5 MHz
Elements: 2 on VHF / 4 on UHF
Gain: 7.9 dBi / 9.5 dBi (Free Space)
Front-to-Back Ratio (F/B): 18.2 dB / 22.97 dB
Beamwidth: 72° / 45°
SWR: 1.1:1 – 1.5:1
Maximum Power: 300 W
Boom Length: 56 cm / 22.05 in
Weight: approximately 430 g / 0.95 lb
Shipping Dimensions: 72 × 4 × 4 cm / 28.35 × 1.57 × 1.57 in
Assembly Time: approximately 5 minutes
Elements: 2 on VHF / 4 on UHF
Gain: 7.9 dBi / 9.5 dBi (Free Space)
Front-to-Back Ratio (F/B): 18.2 dB / 22.97 dB
Beamwidth: 72° / 45°
SWR: 1.1:1 – 1.5:1
Maximum Power: 300 W
Boom Length: 56 cm / 22.05 in
Weight: approximately 430 g / 0.95 lb
Shipping Dimensions: 72 × 4 × 4 cm / 28.35 × 1.57 × 1.57 in
Assembly Time: approximately 5 minutes
Note: For specifications shown as paired values, the first value corresponds to VHF (145.8 MHz) and the second to UHF (435.5 MHz).
Independent VHF / UHF Feed System
• Two Independent Feed Lines
The SpaceQuad features one independent coaxial connection for VHF and another for UHF, allowing each band to be connected directly to the radio or used with the most suitable transceiver configuration for satellite operation.
The SpaceQuad features one independent coaxial connection for VHF and another for UHF, allowing each band to be connected directly to the radio or used with the most suitable transceiver configuration for satellite operation.
• BNC Connectors
Equipped with 2 female BNC connectors, one dedicated to VHF and the other to UHF.
Equipped with 2 female BNC connectors, one dedicated to VHF and the other to UHF.
Construction & Materials
• Boom
Square profile measuring 15 × 1 mm / 0.59 × 0.04 in, designed to keep the antenna structure lightweight and compact.
Square profile measuring 15 × 1 mm / 0.59 × 0.04 in, designed to keep the antenna structure lightweight and compact.
• Quad Elements
Made from 6 × 4 mm / 0.24 × 0.16 in fiberglass tubing, combining low weight, flexibility, and mechanical strength for portable operation.
Made from 6 × 4 mm / 0.24 × 0.16 in fiberglass tubing, combining low weight, flexibility, and mechanical strength for portable operation.
• Designed for Easy Transport
When disassembled, the antenna measures approximately 72 × 4 × 4 cm / 28.35 × 1.57 × 1.57 in and weighs only 430 g / 0.95 lb, making it easy to carry for portable and satellite operations.
When disassembled, the antenna measures approximately 72 × 4 × 4 cm / 28.35 × 1.57 × 1.57 in and weighs only 430 g / 0.95 lb, making it easy to carry for portable and satellite operations.
Reviews
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BIG SIGNAL SpaceQuad
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.
The form of payment will be made once the email is received, so at all times you can cancel the order informing us of the process.
Excelente antena para satelites!
Hice el esfuerzo de levantar un ahorro y ahora la tengo en casa, dure menos de 1hr armando la antena ya que repase la guia y segui los pasos que envia Big Signal, pero todo fue perfecto!
He empezado a experimentar con la antena y que maravilla! Contactos en satelites IO-86, ISS en FM y ahora en SSB RS-44 he logrado romper mi propio record con una estacion de Argentina casi a los -1 Grados de elevacion, es fenomenal!
Como Costa Rica es un pais montañoso es dificil hacer contactos via VHF localmente, y he logrado batir record de mas de 49km con elevaciones de por medio. Recomiendo esta antena para todos aquellos que quieran experimentar el rendimiento excepcional de una antena cubica para satelites o comunicacion local en VHF Y UHF!
Después de cinco años buscando y probando distintas antenas, ¡por fin he encontrado una que realmente funciona en condiciones extremadamente exigentes! Estoy encantado con la Big Signal SpaceQuad: no solo ofrece un rendimiento sobresaliente, sino que además es increíblemente ligera y prácticamente inmune al viento cuando se sostiene a mano.
Aquí, en Märket Reef, donde el viento rara vez baja de los 7 m/s y a menudo supera los 10 m/s, cada gramo y cada forma cuentan. Esta antena ha superado todas mis expectativas: es fácil de manejar, resistente a los elementos y está diseñada para operadores que necesitan portabilidad sin renunciar al rendimiento. Por fin, una solución fiable para condiciones extremas
After five years of searching and testing different antennas, I?ve finally found one that truly works in extremely challenging conditions! I?m thrilled with the Big Signal SpaceQuad?it not only delivers outstanding performance but is also incredibly lightweight and practically unaffected by wind when held by hand.
Here at Märket Reef, where the wind rarely drops below 7 m/s and often exceeds 10 m/s, every gram and every shape matters. This antenna has exceeded all expectations: it?s easy to handle, resistant to the elements, and built for operators who need portability without sacrificing performance. Finally, a reliable solution for extreme conditions.
Antena con una excelente oreja y fácil de transportar. La uso principalmente para dispersión meteórica y DX en VHF. Montada sobre un trípode dentro de casa junto a la ventana con horizonte este-sur.
La recomiendo para quien necesite una solución fácil de montar y desmontar, ligera, sin apenas QRM muy útil en barridos con equipos SDR desde la ciudad.
Tuve el privilegio de probar una unidad en Iberradio como AO1IBR, por gentileza de Juan Pedro, EA5GJ.
Es una pequeña GRAN ANTENA, la utilizamos en varios pases de diferentes satélites, pero la prueba de fuego fue en el JO-97, en un pase rozando al horizonte (7 grados de elevación máxima), y casi detrás de algunos edificios! Llegábamos al satélite sin problemas!
Es muy ligera, y al ser el boom corto, el centro de gravedad no está lejos de la empuñadura, por lo que no se siente ningún tipo de fatiga en lo que dura un pase.
En fin materiales de primera calidad y una vez desmontada (se monta y desmonta en pocos minutos), "casi" cabe en un bolsillo. ;-)
100% recomendable!