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Quadrifilar antenna VL23 (220-400 MHz)

Q: What is an electronic warfare (EW) antenna, and what is it used for?

An EW antenna is a component of an electronic warfare system used to transmit jamming signals within a specific frequency range. Such antennas are designed to affect UAV control channels, telemetry links, and data transmission systems.

Q: What antennas are used in EW systems?

EW systems use quadrifilar, sector, omnidirectional, and other specialized antennas operating across different frequency ranges. The choice of antenna type depends on the mission, the required coverage sector, and the types of UAVs the system is designed to counter.

Q: What is the difference between an omnidirectional and a sector antenna?

An omnidirectional antenna radiates a signal in a full 360-degree pattern, providing circular coverage around itself. A sector antenna concentrates the signal within a defined sector, enabling higher efficiency and stronger performance in a specific direction.

Q: What are quadrifilar antennas used for?

Quadrifilar antennas are used in dome-type electronic warfare systems to create a wide coverage area. Thanks to circular polarization, they ensure stable performance against UAVs regardless of their orientation in space.

Q: How to choose an antenna for an EW system?

When selecting an antenna, it is important to consider the operating frequency range, target type, system use case, and required coverage area. It is also essential to take into account polarization type, gain level, and allowable power handling.

Q: What frequencies do BlueBird Tech EW antennas support?

Depending on the model, BlueBird Tech antennas operate across different frequency ranges from 160 MHz to 6 GHz. This allows them to be used in systems designed to counter FPV drones, various types of UAVs, and other wireless communication systems.

Q: What does antenna gain mean?

Antenna gain indicates how effectively an antenna focuses the signal in a specific direction. The higher the dBi value, the more efficiently the antenna concentrates radiated energy into a defined area.

Q: Why is choosing the correct antenna polarization important?

Polarization affects system performance and interaction with the target. Depending on the type of UAV and the operational scenario, antennas with circular, vertical, or horizontal polarization may be used.

Q: What antennas are suitable for dome-type EW systems?

Quadrifilar antennas with circular polarization are most commonly used in dome-type electronic warfare systems. They enable uniform coverage around an object and provide protection from multiple directions.

Q: Can one antenna be used for different frequency ranges?

Each antenna is designed to operate within a specific frequency range. For maximum efficiency, it is necessary to use models whose specifications match the EW system’s operating parameters.

The VL23 quadrifilar antenna is a dome-shaped antenna for EW systems designed to counter DJI Mavic drones, featuring RHCP circular polarization and a power handling capability of up to 120 W.

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177 $
* with VAT

148 $
* excluding VAT

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* Price excluding VAT for:

government customers in the defense sector
with an end-user certificate,
where the final recipient of the goods is law enforcement agencies,
Ministry of Defense, Armed Forces of Ukraine, state customers in the defense sector.
The procedure for completing a VAT-exempt purchase for military personnel is provided in the "Frequently Asked Questions" section at the bottom of the page. If you still have questions after reviewing this information, please contact a BlueBird Tech manager.

Technical characteristics

Parameter	Specification
Nominal frequency	210–600 MHz
Operating range	220–400 MHz
SWR	< 1.5
Polarization	Circular (RHCP)
Impedance	50 Ohm
Gain	3.2 – 6.5 dBi
Radiation pattern	Quasi-spherical
Maximum input power	120 W
Connector	N-type (female)
Material	Aluminum
Temperature range	−40…+80 °C
Weight	~4 kg
Dimensions	390 (H) ×440 (W) мм

What kind of device is this?

The VL23 quadrifilar antenna by BlueBird Tech is a dome-type quadrifilar helix antenna (QHA) with RHCP circular polarization, designed to operate in the 220–400 MHz frequency range. Thanks to its geometry, the antenna provides effective performance against aerial targets such as drones and aircraft. It is used as part of dome-type EW systems to create a radio suppression zone and neutralize communication and control channels of unmanned aerial vehicles.

Functions of the VL23 quadrifilar antenna by BlueBird Tech

Formation of a quasi-spherical radiation pattern to provide coverage of the space around the antenna.
Effective operation against fast-moving targets or those changing orientation.
Stable performance at power levels up to 120 W.
Coverage of the upper hemisphere for countering aerial targets.
Ability to integrate into mobile and stationary EW systems.

Operating principle of the VL23 quadrifilar antenna by BlueBird Tech

Thanks to its quadrifilar design, RHCP circular polarization is generated, enabling effective interaction with drone signals regardless of their spatial orientation.
The antenna creates a quasi-spherical electromagnetic field with emphasis on the upper hemisphere, ensuring effective coverage of the aerial space.
It affects communication, control, and data transmission channels within the operating frequency range.

By purchasing the VL23 quadrifilar antenna in the official kit, you will receive:

VL23 quadrifilar antenna (220–400 MHz) — 1 pc.

Delivery terms for the VL23 quadrifilar antenna

Delivery is carried out exclusively via Nova Poshta. Other delivery services are not used.

Warranty for the VL23 quadrifilar antenna

Warranty for the VL23 quadrifilar antenna – 12 months from the date of purchase.

Warranty service is provided by the manufacturer’s service center – BlueBird Tech.

The warranty does not apply if the device has defects resulting from:

mechanical damage (impacts, drops, submersion in water, housing deformation, etc.);
improper or careless handling of the device;
violation of operating, transportation, or storage requirements;
unauthorized modification or tampering with the device structure.

Return and exchange conditions for the VL23 quadrifilar antenna

The company processes returns and exchanges in accordance with applicable legal requirements.

Return terms

Returns are possible within 14 days after receipt (for goods of proper quality).

Return shipping is arranged in accordance with prior agreement.

According to applicable legislation, you may return a product of proper quality or exchange it if:

The product has not been used and shows no signs of use by the consumer, such as scratches, chips, abrasions, stains, etc.
The product is fully complete and the original factory packaging is intact.
The product retains its commercial appearance and consumer properties.

Payment methods for the VL23 quadrifilar antenna

Full payment

You pay for the order in full and pick it up at the post office.

Why users choose the VL23 quadrifilar antenna

Quasi-spherical spatial coverage.
RHCP circular polarization.
Operation with moving targets.
Ukrainian development by BlueBird Tech.

About the manufacturer of the VL23 quadrifilar antenna

BlueBird Tech is a Ukrainian manufacturer of defense engineering electronics that develops and produces serial defense solutions. Our goal is to create technologies that protect lives and ensure Ukraine’s advantage on the battlefield.

To learn more about us and our journey, please visit the “About Us” page.

About Us

App Store & Google Market

5K+

downloads

Mobile application “BLueBird tech”

Firmware update
drone detector

Offline access to instructions,
news and useful materials

The VL23 quadrifilar antenna is used in EW systems for countering aerial targets.

For military units, to cover forward positions, equipment, and personnel, create a drone signal suppression zone, reduce the risk of FPV attacks, and increase safety in combat areas.

For volunteer organizations, to equip units in field conditions, upgrade existing EW systems, enhance their effectiveness, and provide additional protection against unmanned aerial vehicles.

For critical infrastructure facilities, to protect strategic sites, industrial enterprises, energy and logistics hubs, ensure stable system operation, and reduce risks from aerial threats.

Quadrifilar VL23 antenna by BlueBird Tech

main indicators

Frequency range: 210–600 MHz
Operating band: 220–400 MHz
Gain: from 3,2 to 6,5 dBi
Weight: ~4 kg

Do you have any questions about the VL23 quadrifilar antenna?

Call us – we will explain the technical details and advise you on how to integrate the VL23 quadrifilar antenna into your existing protection system. Phone: +38 073 864 04 07 For safety, please use only the official communication channels listed on this website.

Phone Number

+38 073 864 04 07

Please note

that our original BlueBird Tech devices can only be purchased from us, on the manufacturer’s official website: blue-bird.tech

and on the official websites of our partners: flasharmy.com.ua, market.brave1.gov.ua, bezpeka.pro

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FAQ

What is an electronic warfare (EW) antenna, and what is it used for?

An EW antenna is a component of an electronic warfare system used to transmit jamming signals within a specific frequency range. Such antennas are designed to affect UAV control channels, telemetry links, and data transmission systems.

What antennas are used in EW systems?

EW systems use quadrifilar, sector, omnidirectional, and other specialized antennas operating across different frequency ranges. The choice of antenna type depends on the mission, the required coverage sector, and the types of UAVs the system is designed to counter.

What is the difference between an omnidirectional and a sector antenna?

An omnidirectional antenna radiates a signal in a full 360-degree pattern, providing circular coverage around itself. A sector antenna concentrates the signal within a defined sector, enabling higher efficiency and stronger performance in a specific direction.

What are quadrifilar antennas used for?

Quadrifilar antennas are used in dome-type electronic warfare systems to create a wide coverage area. Thanks to circular polarization, they ensure stable performance against UAVs regardless of their orientation in space.

How to choose an antenna for an EW system?

When selecting an antenna, it is important to consider the operating frequency range, target type, system use case, and required coverage area. It is also essential to take into account polarization type, gain level, and allowable power handling.

What frequencies do BlueBird Tech EW antennas support?

Depending on the model, BlueBird Tech antennas operate across different frequency ranges from 160 MHz to 6 GHz. This allows them to be used in systems designed to counter FPV drones, various types of UAVs, and other wireless communication systems.

What does antenna gain mean?

Antenna gain indicates how effectively an antenna focuses the signal in a specific direction. The higher the dBi value, the more efficiently the antenna concentrates radiated energy into a defined area.

Why is choosing the correct antenna polarization important?

Polarization affects system performance and interaction with the target. Depending on the type of UAV and the operational scenario, antennas with circular, vertical, or horizontal polarization may be used.

What antennas are suitable for dome-type EW systems?

Quadrifilar antennas with circular polarization are most commonly used in dome-type electronic warfare systems. They enable uniform coverage around an object and provide protection from multiple directions.

Can one antenna be used for different frequency ranges?

Each antenna is designed to operate within a specific frequency range. For maximum efficiency, it is necessary to use models whose specifications match the EW system’s operating parameters.

Where can I buy antennas for EW systems?

Antennas for EW systems, including quadrifilar, sector, omnidirectional, and specialized models, can be purchased through official BlueBird Tech channels. When selecting an antenna, it is important to consider the type of system, operating frequency range, and environmental conditions.