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8 Antennas Indoors & Car use VHF/UHF Signal Jammer EST-502F8

SKU: #001 - In Stock

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This powerful 8 antennas VHF/UHF signal jammer adopted advanced technology, widely covers UHF/VHF frequency, within 1-40 meters radius. Creating a shielding range for you to avoid car positioning and track positioning, with car adapter, you can use this jammer in mobile vehicle such as bus, car, truck, etc. For organization and personnel who needs not to be surveillance, and tracking.


(1) Frequency bands

① VHF radio 1: 30-50MHz

② VHF radio 2: 50-80MHz

③ VHF radio 3: 80-110MHz

④ VHF radio 4: 110-135MHz

⑤ VHF radio 5: 135-175MHz

⑥ VHF radio 6: 175-230MHz

⑦ VHF radio 7: 230-270MHz

⑧ VHF radio 8: 270-300MHz

(2) Colour: black

(3) Antennas: 8 omnidirectional antennas

(4) Shielding Radius: 0-40m adjustable (@-75dBm, still depends on the signal strength in given area)

① 【the Cellular 2G/3G signal must ≤-75dBm in the location】

② 【the Cellular 4G signal must ≤-115dBm in the location】

(5) Single Output Power(each band): ≤ 33dBm / 2W (adjustable with power adjustment knob)

(6) Power supply: AC/DC adapter(Input: AC100-240V; Output: DC27V 10A)

(7) Dimension: 376*235*58 mm (excluding antennas)

(8) Weight: 3.5kg (main unit) / 4.65kg (full set net weight)

(9) Package Weight(G.W.): about 6kg

(10) Working Temperature: -40 to +55℃

(11) Relative humidity: ≤90%(RH)

(12) Air pressure: 86~106kPa

(13) Safety regulation:  AC Adapter UL (E190582)  /  CSA (LR112971 Level 3)


(1) Five fans excellent cooling system, with high heat dissipation aluminum plate.

(2) 24/7 continuously working is available in well-ventilated place.

(3) 8 high gain omnidirectional antennas, widely covers mobile phone signal frequency.

(4) Each band working independently, can turn off one band without influence others.

(5) The output power of each band can be adjusted independently with adjustment knob.

(6) Stable shielding performance.

(7) Low noise while working.

(8) Could be use in car directly, with car adapter(optional).

(9) Only effect on UHF/VHF signal, do not disturb other electronic devices working, harmless to human body.

Operation instruction

(1) Open the package and take out the devices.

(2) Install the antennas to the right position according to the indicated number, then plug in.(important, otherwise the jammer can not work)

(3) Connect with electricity with power adapter, switch on the power button, if the indicators light on, the jammer is working.

(4) If the shielding range decreases, it means the battery is running low, please charge the battery in time.

(5) The valid scope is a round space spread from the jammer, to achieve the most efficiency, please put the jammer in the center.

(6) Please keep the jammer away from electromagnetic and heat sources to ensure maximum efficiency and stable long-tern operation.

(7) After using, please switch off the jammer for normal usage of mobile phones.

(8) While using the jammer outdoors, please be aware of water and damp.

(9) It is normal phenomenon the main unit heated while working, please do not put other sundries on it.


(1) The jammer needs no special maintenance.

(2) For storage, please avoid caustic gases and liquids, make the jammer dust-proof and moisture-proof to prevent the aging of the inside components be accelerated.

(3) For storage, please contain the jammer in dry and ventilated places to avoid salty mist and noxious gases.

(4) The warranty period is 1 year.

Application situation

Conference room, jail, school, residential zone, government building, car, bus, boat, yacht, mobile vehicle. Places where information security and high confidentiality is required.

Packing list

(1) EST-502F8 main unit ————————-1 piece

(2) Antenna ————————————1set (8 pieces)

(3) AC/DC adapter————————-1 piece

(4) Car adapter ——————————1 piece

(5) Remote control——————————–1 piece

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