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.


  • 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 Band Up to 200W per band
Min. Output Power per Band 5W5Wv
Output Power Control Steps 1dB
Internal Modulation FM Hopping frequency
Signal Source DDS & PLL synthesized
Modules Per Unit Up to 8 Bands
Programming Control TCP/IP Protocol

Jamming Frequency Range

Frequency Band All cellular and Wi Fi frequencies
Channel Band Width 250KHz
Channel Spacing 200KHz

Physical Data

Dimensions IP54/64 Enclosure –
Weight 25-45 Kg

Environment of operation

Operating Temp -10ºC – +65ºC
Humidity 5% – 80%

Optional Accessories

Rechargeable Battery 24VDC / 70AH
Control Cable Via PC TCP/IP Protocol Via LAN Port

*Specifications are subject to change without prior notice


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