The SMJ1890 has been designed for blocking GSM cellular network and all kinds of cellular standards in the world.
The SMJ1890 is using state-of-art technology for
The unit controlled by Microprocessor for PLL & DDS programming.
The unit has been designed with the capabilities of jamming specific channels inside the cellular networks bands only.
Jamming of downlink & uplink is possible in the same time.
The unit based on DDS that can be programmable to transmits up to 36 channels in the band, by fast sweeping between each other.
Channel bandwidth is 250 KHz, and can not be changed.
The user can control output power of each band by
Output power can be varied from 5W up to 100W within 1dB steps.
The SMJ1890 transmits noise signal which cut-off all cellular communication between mobile phones and cellular cells.
The jamming radius depends on the strength signal in given area.
All cellular mobile in vicinity of SMJ1890 will be totally BLOCKED and will not be able to receive or dial outgoing calls.