4-Band GPS & 3G GPRS Cell Phone Jammer

SKU: B38


Out of stock

This is a powerful GPS GPRS tracking jammer. Built with 4-band, it features a portable size design. Professional function for all of the vehicles which might have been tracked. Jam trackers, loggers, and navigators. It also covers 2G and 3G mobile signals. Built-in cooling fan and effective cooler. Works 24/7 continuously.


This portable 4-band tracking jammer was built for blocking GPRS and GPS trackers, 2G and 3G Cell Phones. It also provides a perfect solution for drivers that hope to prevent unwanted trackers.

Not only does it block GPS L1 trackers, but it also cancels GSM trackers and GPRS trackers. This amazing 4 bands jammer works on all kinds of GPS loggers and GPS navigators.

4 channel DIP switch is pre-installed below power switch on the right panel. The user can turn on or turn off each band separately according to the conditions. The related indicator, located right above the switch, will turn on/off isochronously.

Jammer B38 has a built-in cooling fan, effective cooler and the alloy case comes with air slots. The enhanced power circuit system allows 24/7 continuous working on the power adapter. The internal battery pack supports 1.5~2 hours of working time. A full recharge takes 4 hours after switching it off. In order to get an additional 2 hours of the operation time, you can connect the device to a 4000mah battery pack.

Features of B38 – 4-band 3G GPS GPRS Tracking Jammer

  1. New design created in the year 2012
  2. 4-band antenna and portable size
  3. Enhanced solution to prevent GPRS/GPS trackers
  4. Covers both 2G and 3G cell phones
  5. Typical coverage is 5~15 meters
  6. Effective cooling fans and air slots
  7. Works directly on power adapters
  8. DIP switches for turning on/off each band separately
  9. Antennas and sockets are numbered – easy installation
  10. 12 months quality warranty

Applications of B38 – 4-band 3G GPS GPRS Tracker Blocker

Prevent Trackers: Auto cars, trucks, buses, motorcycles, trains, ships and boats;
Prevent Mobiles Phones: Meeting rooms, museums, galleries, theatres, concert halls, churches, temples, factories, banks.

Frequency Applications

The European version is for Europe, Australia, Middle East, South East, Africa, and Brazil.
The American version is applicable for use in Canada, USA and South America (except Brazil).

Package includes

  • 1 x B38 – 4-Band Tracker Preventer
  • 4 x SMA Whip Antenna
  • 1 x Easy Carry Bag
  • 1 x AC Power Adapter (Wall Charger)
  • 1 x Car Adapter

Technical specifications

Product Code: B38
European Frequencies: GPS L1, GSM900+CDMA850, GSM1800 and 3G
American Frequencies: GPS L1, CDMA850+GSM900, GSM1900 and 3G
Working Object:
  • GPS trackers
  • Real-time trackers
  • GPS loggers
  • GPS navigators
  • Mobile phones
  • 3G phones
  • GSM trackers
  • GPRS trackers
Signal Source: PLL Synthesized
Output Power: 1040mW
Jamming Range: 5~15 Meters
Antenna Interface: 4 x Strong Omni SMA 3dB antennas
Remote Control: N/A
Working Current: 2800~3400mA
Power Supply: Battery and power adapters
Battery: Lithium-ion battery 8.4V 5200mAh - Battery life 1.5-2 hours - Full recharge 4 hours
Power Adapter: Wall charger 110-250V 12VDC 2000mA - Car charger 12-24V 12VDC 2000mA

Extra Info

Color: Black or Silver
Brand: Jammers
Dimensions (LxWxD): 110/189 x 63 x 34.5 mm
Package: Neutral blank brown box with polyfoam
Operating Temperature: 0-50 degree
Humidity: 5% - 80%
Warranty: 1 Year