SMJ1890 – Cellular GSM Jammer

SMJ1890 – Cellular GSM Jammer


Up to 200W Adjustable Output Power/Band

The SMJ1890 was designed for blocking GSM cellular network and all kinds of cellular standards in the world. The SMJ1890 uses state-of-the-art technology for maximum performance. The unit is controlled by a microprocessor for PPL & DDS programming.

The unit was designed with the capabilities of jamming specific channels inside the cellular networks bands only. Additionally, jamming of downlink & uplink is possible at the same time. The unit is based on a DDS that can be programmed to transmit up to 36 channels per band, by fast-sweeping between each other. The channel bandwidth is 250 KHz.

The user can control the output power of each band via a programmable attenuator.

Output power can vary from 5W to 100W within 1dB steps. The SMJ1890 transmits a noise signal, which cuts-off all cellular communication between mobile phones and cellular base stations.

The jamming radius depends on the signal strength in a given area. All cellular mobiles in proximity to the SMJ1890 will be totally blocked and will not be able to receive or dial outgoing calls.

Prison solutions


  • Prisons
  • Military Units
  • Special Police Units
  • Governmental Facilities
  • Sensitive Areas


  • Jamming up to 60 channels inside the cellular band
  • Easy to use programming interface
  • Programmable output power for each band
  • High VSWR protection
  • Built-in filter for minimum RF interference outside the jamming bands
  • Installation in IP54/66 enclosure cabinets suited for continuous outdoor operation, with protection against dust and precipitations
  • Controlled by PHANTOM-JCMS – Jamming Control Management Software


RF Characteristics

Max. Output Power per BandUp to 200W per band
Min. Output Power per Band5W5Wv
Output Power Control Steps1dB
Internal ModulationFM Hopping frequency
Signal SourceDDS & PLL synthesized
Modules Per UnitUp to 8 Bands
Programming ControlTCP/IP Protocol

Jamming Frequency Range

Frequency BandAll cellular and Wi Fi frequencies
Channel Band Width250KHz
Channel Spacing200KHz

Physical Data

DimensionsIP54/64 Enclosure –
Weight 25-45 Kg

Environment of operation

Operating Temp-10ºC – +65ºC
Humidity5% – 80%

Optional Accessories

Rechargeable Battery24VDC / 70AH
Control Cable Via PCTCP/IP Protocol Via LAN Port

*Specifications are subject to change without prior notice

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