Grets 4M dome EW with quadrifilar antennas
EW with dome antennas, to counter FPV UAVs operating in the 470-750 MHz, 700-1050 MHz frequency band
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158 000 uah.
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Functions
The “Grets 4M” device is an electronic warfare (EW) tool designed to counter FPV UAVs operating in the 470-530 MHz and 700-1050 MHz frequency bands. It has four separate jamming bands on dome antennas and can jam all bands simultaneously, blocking communication for the most popular FPV transmitters.
The GRETS 4M EW system is a reliable and powerful tool for protection against electronic interference. Combining multiple functions, a wide operating frequency range, and compact dimensions, it is an indispensable component of any security system.
A key advantage of the model is its weight of 7 kg and its body dimensions of 370x295x134 mm, ensuring ease of transport and storage.
The model is designed to operate in a wide temperature range from -30°C to +50°C. The housing is made of heat-dissipating materials and equipped with a cooling system to prevent overheating. The IP54 dust and moisture protection level ensures that no dust or moisture enters the housing.
Thanks to its features and advantages, the GRETS 4M EW system becomes an essential tool for ensuring the safety of military installations, infrastructure, and people.
Technical characteristics:
| Parameter | Value |
|---|---|
| Frequency range | 470-530, 700-1050 MHz |
| Power supply | 220 V or 28 V |
| Number of antennas | 4 pcs. |
| Bracket for mounting 4 antennas on a vehicle or stand | 1 pc. |
| Connecting cables | 4 pcs., 2 m each |
| Housing dimensions | 370x295x134 mm |
| Total length when assembled | 830/630 mm |
| Antenna length | 600/400 mm |
| Total power | (50+50+50+50) W |
| Power consumption | (150+150+150+150) W |
| Effective range | from 70 m to 400 m, depending on distance to enemy pilot, FPV drone frequency, and other factors |
| EW system weight without battery | 7 kg |
It Grets 4M dome EW with quadrifilar antennas includes:
| 1. EW device. 2. Four quadrifilar antennas for frequencies 420-750 MHz, 700-850 MHz, 800-950 MHz, 900-1050 MHz. 3. 220V power cable. 4. Bracket for mounting 4 antennas on a vehicle or stand. 5. Patch extension cable for each frequency band (4 pcs., 2 m each). 6. User manual: Grets 4M. |
Optionally can be added:
| Parameter | Value |
|---|---|
| Springs for antenna mounting on a vehicle | 4 pcs. |
| Remote control | 1 pc. |
| Additional antennas | – |
Installation Requirements
- Connection to an external power source: 220V or 28V (optional).
- Absence of physical damage to the device, antennas, and power supply cable.
- Proper connection of the corresponding included antennas.
- Antennas must be positioned vertically.
- Ambient temperature must not be lower than -30°C or higher than +50°C.
Delivery Methods
The primary delivery method is via Nova Poshta. We also ship via Ukrposhta or Meest Express.
Payment Methods
You can choose from several payment options:
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Full Payment:
Pay for the order in full and collect it at the post office. -
Cash on Delivery:
Partial prepayment is required. If the item is not in stock, we start the production process. Afterward, we send the item and provide you with the tracking number. To collect the order from the post office, you will need to pay the remaining balance upon receipt. -
Partial Payment:
Reserve your order, and we begin the production process. Once your order is ready for shipment, you pay the remaining balance. We then send the item and provide you with the tracking number.
Advantages of Our Electronic Warfare Systems
- Affordable pricing.
- Covers the frequency ranges requested by the military, not outdated ranges from six months ago.
- Combined solution: adaptable for both vehicle-mounted and trench-based electronic warfare thanks to specialized springs and antennas.
- Selection of optimal antenna equipment to ensure the safety of various positions.
- Commitment to creating real dome-shaped protection.
- Thorough diagnostics of the equipment before shipment.
Return and Exchange Policy
Our company processes returns and exchanges in accordance with legal requirements.
Return Period:
Returns are accepted within 14 days of receipt (for items of proper quality).
Return Delivery:
Return shipping is carried out as per prior agreement.
In accordance with current legislation, you may return or exchange items of proper quality if:
- The item has not been used and shows no signs of use by the consumer, such as scratches, chips, scuffs, stains, etc.
- The item is fully complete, and the factory packaging is intact.
- The item retains its commercial appearance and consumer properties.
HOW DIFFERENT TYPES OF ANTENNAS WORK
Collinear antennas – on a moving object (Fig. A). The drone enters the effective range of the electronic warfare device while it is moving, unable to fly over the moving unit. They provide a greater range of interference propagation.
Dome-type antennas – on stationary positions (Fig. B). They provide better coverage over the protected object but have a shorter range.
PRODUCT DESCRIPTION:
Power Supply:
The device operates on 220V power supply and optionally 28V, with separate inputs for each.
The 220V connection uses an IEC 60320 / C7 (figure-eight) connector, and a cable is included.
The 28V connection uses a TX60 (yellow) connector – optional. Consultation for use is MANDATORY when ordering.
Controls:
The controls consist of buttons on the body for power supply and for turning each interference band on or off separately/together.
Power Button – turns the device on and off.
- Lower position: turns on the device. If the power button indicator is illuminated, the device is receiving power and is ready for use.
- Upper position: turns off the device. The indicator light is off.
Button “1” – turns the 700-820 MHz interference band on and off.
- Lower position: turns on the 700-820 MHz interference band. If the button “1” indicator is illuminated, the first interference band is active.
- Upper position: turns off the 700-820 MHz interference band. The indicator light is off.
Button “2” – turns the 800-920 MHz interference band on and off.
- Lower position: turns on the 800-920 MHz interference band. If the button “2” indicator is illuminated, the first interference band is active.
- Upper position: turns off the 800-920 MHz interference band. The indicator light is off.
Button “3” – turns the 900-1050 MHz interference band on and off.
- Lower position: turns on the 900-1050 MHz interference band. If the button “3” indicator is illuminated, the second interference band is active.
- Upper position: turns off the 900-1050 MHz interference band. The indicator light is off.
Button “4” – turns the 410-490 MHz interference band on and off.
- Lower position: turns on the 410-490 MHz interference band. If the button “4” indicator is illuminated, the third interference band is active.
- Upper position: turns off the 410-490 MHz interference band. The indicator light is off.
LED Button – turns the illumination of the interference band button indicators on and off.
On standard models, pressing the buttons is accompanied by light indicators, but in some versions, this feature may be absent.
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