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Light EW Hrets 4M

“Hrets 4M” is a lightweight EW system designed to counter FPV drones, providing signal suppression at distances of 70–400 m.

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4 118 $
* with VAT

3 432 $
* excluding VAT

Get a price excluding VAT
with the presence of an end-user certificate

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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
Frequency ranges	470-530, 700-1050 MHz
Power source	from 220 V (or optional 28 V)
Number of antennas	4 pcs
Antenna mounting brackets	for a vehicle or mast
Connection cables for each frequency band	4 pcs × 2 m
Dimensions	380 × 330 × 150 mm
Total power output	up to 200 W
Power consumption	up to 600 W
Effective operating distance	Depends on the distance to the hostile operator and the FPV drone frequency: from 70 to 400 m
Weight of the electronic warfare system without battery	12 kg

What kind of device is this?

The “Hrets” 4M light electronic warfare system by BlueBird Tech is an EW solution designed to counter FPV drones by suppressing control channels within operating frequency ranges. The system operates in the 470–530 MHz and 700–1050 MHz bands, features four separate jamming channels, and supports simultaneous blocking of the most commonly used FPV transmitters.

The device can be used in various conditions, and thanks to its compact size, rugged housing, cooling system, and IP54 protection rating, it ensures stable operation in field environments.

Functions

Operates within selected frequency ranges: 470–530 MHz, 700–820 MHz, 800–920 MHz, 900–1050 MHz.
Enables blocking of multiple popular FPV transmitter frequencies and effectively counters various control channels.
Supports simultaneous activation of all channels to create a dense electronic suppression field.
Equipped with a heat-dissipating housing and a cooling system to prevent overheating during extended operation.

Principle of operation

After connecting to a power source, the system activates and enters operational mode.
The operator can switch on all channels simultaneously or configure the device according to specific deployment conditions.
The system begins generating interference within the selected frequency ranges, affecting FPV drone control channels.
Depending on the type of installed antennas, the device provides effective coverage according to operational requirements.
The system operates continuously, maintaining the specified parameters across the selected bands.

By purchasing the “Hrets” 4M electronic warfare system in its branded packaging, you will receive:

“Hrets” 4M electronic warfare system.
Four antennas.
220 V power cable.
Mounting bracket for installing 4 antennas on a vehicle or mast.
Antenna extension patch cables for each frequency band (4 pcs, 2 m each).
User manual: Hrets 4M.

Delivery terms for the “Hrets” 4M EW system

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

Warranty for the “Hrets” 4M EW system

Warranty for the “Hrets” 4M electronic warfare system is 12 months from the date of purchase.

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

The warranty does not cover defects resulting from:

Mechanical damage (impacts, drops, immersion in liquid, casing 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 terms for the “Hrets” 4M EW system

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

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 or exchange a product of proper quality 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 preserved.
The product retains its commercial appearance and consumer properties.

Payment method for the “Hrets” 4M EW system

Full payment

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

Why users choose the “Hrets” 4M EW system by BlueBird Tech

Support for four separate suppression bands.
Operation across a wide frequency range to counter popular FPV transmitters.
Compatibility with different types of antennas.
Ukrainian development by BlueBird Tech.

About the manufacturer of the “Hrets” 4M EW system

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.

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 “Hrets” 4M EW system is used to neutralize the impact of FPV drones in various conditions

For mobile units and crews to enhance safety during movement and mission execution.

For medical and evacuation transport to reduce the risk of damage while operating in hazardous areas.

For stationary positions and field sites to protect equipment, personnel, and infrastructure facilitie

Light EW system “Hrets” 4M by BlueBird Tech

main indicators

Frequency ranges: 470–530 MHz and 700–1050 MHz (4 bands)
Neutralization: FPV drones
Weight: 12 kg

Do you have any questions about the “Hrets” 4M EW system?

Call us – we will explain the technical details and advise on how to integrate the “Hrets” 4M electronic warfare system into your existing protection system. Phone: +38 073 864 04 07 For safety, 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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Поширені питання

What is the EW system “Hrets” 4M, and what is it used for?

The “Hrets” 4M is a lightweight electronic warfare system designed to suppress FPV drone control channels in the 470–1050 MHz range. The device operates across 4 frequency bands and is used to block UAV control signals. The system is suitable for mobile and stationary deployment

How does the “Hrets” 4M block FPV drone and quadcopter signals?

The “Hrets” 4M generates radio interference across four independent frequency bands used for FPV drone control. The system suppresses communication links, making UAV control more difficult. Effectiveness depends on terrain conditions, signal frequency, and distance to the drone operator.

What is the power and signal jamming range of the “Grets” 4M?

The system’s total output power is up to 200 W with power consumption of up to 600 W. The effective operating range is from 70 to 400 m depending on the FPV drone frequency, terrain, and distance to the signal source.

How many channels does the EW system “Hrets” 4M support?

The “Hrets” 4M supports 4 independent frequency bands: 470–530 MHz, 700–820 MHz, 800–920 MHz, and 900–1050 MHz. This enables effective suppression of different FPV drone control channels and allows the system to be adapted to various types of threats.

What types of power supply and cooling are used in the “Hrets” 4M?

The system operates from a 220 V mains supply and also supports connection to a 28 V autonomous power source. The “Hrets” 4M is equipped with active cooling, which ensures stable continuous operation under prolonged load in field conditions.

How effective is the “Hrets” 4M in mobile and stationary conditions?

The “Hrets” 4M is designed for use both on vehicles and at stationary positions. The system has compact dimensions of 380×330×150 mm and a weight of 12 kg without a battery, which facilitates transport and rapid deployment. Effectiveness depends on proper antenna placement and the electronic warfare environment.

Where can I buy the EW system “Hrets” 4M?

The original EW system “Hrets” 4M by BlueBird Tech is available for order through the manufacturer’s official website. For consultation regarding configuration, specifications, and delivery terms, you can contact the company’s managers.