8 Band Digital Portable Signal Jammer Block Mobile Phone Signal 2.5dBi Omni Antennas

Basic Information
Place of Origin: China
Brand Name: GREETWIN
Certification: SGS, ISO9001
Model Number: GW-JN8DGN
Minimum Order Quantity: 1pcs
Price: Negotiable
Packaging Details: Box with PE Foam
Delivery Time: 3 Working Days After Received Payment
Payment Terms: T/T, L/C, Western Union, MoneyGram
Supply Ability: 20000pcs per Month
Product Name: Digital 8 Band Handheld Jammer Jamming Range: 10 - 30 Meters Depending On Mobile Signal Strength
Advantage: Pseudo Random Gaussian White Noise Technology Dimension: 93x38x156mm
Power Adapter: Used In Car Directly Antennas: 4PCS 2.5dBi Omni Antennas
Trademark: GREETWIN Working Voltage: 12V-24V
High Light:

handheld signal jammer


handy signal jammer

8 Band Digital Portable Signal Jammer Block Mobile Phone Signal 2.5dBi Omni Antennas



This portable signal jammer GW-JN8DGN design 8 channels with 4 antennas.

digital noise technology jamming range is very high, 2 times stronger than VCO technology jammer.

Digital Gaussian white noise is essentially a pseudo random signal, signal characteristics consistent with a random function. Strong Anti-interference ability, there is no need high power interference radiation power, influence and damage to the electromagnetic environment is very small, can bear long distance loss. Long-term cases, interference stability. Mechanism causes due to interference, interference by external environment (such as wind, rain, ice, variations on space) change is not obvious.

There are 3 types RF Jammers.
1. VCO(voltage controlled oscillator) Technology
2. DDS (Direct Digital Synthesis)Technology

3. Pseudo random digital Gaussian white noise technology.


General speaking,
1. VCO(voltage controlled oscillator) Technology
Requirements for the jamming range is not high, extremely sensitive civilian consumption levels of low cost, but efficiencies are not very strict scene.
2. DDS (Direct Digital Synthesis)Technology
Requirements for the jammer need wideband frequency range, and choose different frequency range, such as 20-3000MHz NO gap jamming.
3. Pseudo random digital Gaussian white noise technology.
Requirements for the jamming range is very high, can accept high cost, national security and military, have strict requirements for jamming range.



Portable Signal Jammer Basic Features:
(1) Compact Size and easy carry
(2) Multiple bands ,Individual channel on/off selector switches
(3) Long battery life (>1.5hours)

(4) Don't put the jammer into the water or fire to avoid using in the bad Condition like over-wet, over-hot, high voltage and high magnetism.

(5) jamming 8 channels with 4 antennas.

(6) with Digital Gaussian White Noise Technology.


Portable Signal Jammer Applications:

Border control units, checkpoint personnel, Meeting rooms, Hospitals,

Banks, Churches, Conference Rooms, etc


Portable Signal Jammer Specifications:


Type Output port Frequency Output power(±1dBm)




8 Band Digital Handheld Jammer

LTE800 791-821MHz 31dBm
GSM900 925-960MHz 30dBm
GPS L2 1227.6±2MHz 24dBm
GPS L1 1575.4±2MHz 26dBm





WCDMA 3G 2110-2170MHz 29.5dBm
WiFi 2.4G 2400-2500MHz 29.5dBm
LTE2600 2620-2690MHz 29.5dBm
Can customize frequency LTE2300 2300-2400MHz 29.5dBm
CDMA800 851-894MHz 31dBm
LTE700 725-770MHz 31dBm
Power supply: 50 to 60Hz, AC 100 to 240V
With AC adapter (DC12-24V), Built-in Battery 4300mAh
Total Output power: 6.5Watt
Working time: 1.5 hours
Recharging Time of Battery: 3 hours with 12V/2A adapter
10-30M @ depending on the Signal strength

Weight: 950g
Dimension: 90x38x156mm and not include antennas

Packing Dimension: 70x210x240mm

4pcs External Omni-directional Antennas
Running temperature: -10'C to +55'C

8 Band Digital Portable Signal Jammer Block Mobile Phone Signal 2.5dBi Omni Antennas 0




Contact Details
Hawk Greetwin

Phone Number : +8613005164071

WhatsApp : +8615112267605