Wide Range / Correctional Facilities


The GTG/JD18 is a wide band Hi-power cellular jammer especially designed for correctional facilities. It is a high power outdoor jamming device that has the ability to jam cellular phone communications remotely using the control unit in the prison’s administrator computer.


  • Blocks all cellular bands Wi-Fi and Bluetooth communications simultaneously
  • Operation from a distance remote control computer Indoor/Outdoor casing
  • Various types of mounting and deployment options
  • Separate communication for each Jammer
  • Each jammer has its own controllers that communicate with the server computer
  • Wide frequency coverage (700-2690) MHz
  • No interference to nearby frequency bands
  • Various modulation types jamming capability VSWR & thermal protection
  • Overheat protection: 75°C cease operation, 71°C resume of operation
  • Operational Power: 90 – 260 volts ac
  • Optional battery backup
  • Weight: approx. 38Kg
  • Antennas: Directional High Gain antennas


  • Visualisation of the jammers operation upon a scanned topographic/zone maps
  • A Selective operation for each band
  • Ability to control up to 128 jammers from a control room
  • Ability to define/change groups for easy operation
  • Operational – individual /groups or altogethers
  • Optional – operation from distance computer by authorized user
  • Automatic failure Indication operate / communication failure
  • Operational language on demand