Handheld Digital Signal Jammer Block GPS Glonass 4G With 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: L/C, T/T, PayPal, Western Union, MoneyGram
Supply Ability: 20000PCS per Month
Product Name: 8 Frequency Band Economical Digital Handheld Jammer Special: Jamming 8 RF Frequencies With 4 Antennas
Advantage: Pseudo Random Gaussian White Noise Technology Applications: Exam Room, Churches, Temples, Gas Station, Cars, Train Or Many Others
Power Adapter: Can Used In Car Directly Antennas:: 4PCS 2.5dBi Omni Antennas
Warranty: One Year Coverage Area: 300- 3000 Suqare Meters Depending On Cell Phone Signal Strength
High Light:

mobile phone scrambler


mobile phone blocker jammer

Handheld Digital Signal Jammer Block GPS Glonass 4G With 2.5dBi Omni Antennas


The signal Jammers 6.5Watt is designed to block communications between two RF Wireless equipment like Mobile phones and Cellular base station, Glonass, GPS, Wi-Fi 11 a/b/g/n, WIFI, SAT Cell phones, Radio Phones or Remote Controls without interfering with other communication systems.


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

Each signal frequency was controlled by DIP switch independently.

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



Handheld Signal Blocker Features:

(1) Compact Size and easy carry

(2) Multiple bands ,Individual channel on/off with selector switches

(3) Long battery life (>1.5hours)

(4) The digital signals modulated to VCO, produce RF signals, resemble noise signals in the RF spectrum, guarantee the interference efficiency between the traditional VCO and digital interference source.

(5) jamming eight RF frequencies with four antennas.

(6) UWB frequency matching technology employed to reduce the antennas quantity and enhance the working efficiency.

(7) Do not turn on device until antenna fixed.


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.



Specification of Antennas with Frequency Range:

Antennal 1 channel: 791~821MHz&925~960MHz

Antennal 2 channel: GPSL2&GPSL1

Antennal 3 channel: 1805~1880MHz&2110~2170MHz

Antennal 4 channel: 2400~2485MHz&2620~2690MHz



Handheld Signal Blocker 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


Handheld Signal Blocker Applications:

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

Banks, Churches, Conference Rooms, etc


Handheld Digital Signal Jammer Block GPS Glonass 4G With 2.5dBi Omni Antennas 0



Contact Details

Phone Number : +8615112267605

WhatsApp : +8615112267605