Cell Block Jammer
The Cell-block® jammer system is a modular design in which different combinations of
amplifiers and digitally controlled frequency generation units may be fitted according to the
threat and level of the jamming required.
The jamming frequency band of each chain is strictly determined by the bandwidth of the
antennas and not the bandwidth of the amplifiers. Digital RF has a wide range of antennas
available to cover all frequency bands allowing the full output power to be radiated.
Cell-block® uses a proprietary technique of jamming signal which steps a modulated
‘direct synthesised frequency’ or ‘Programmable DAC/VCO’ across specific bands of threat
and combines the best of sequential and barrage jamming in a complex scenario.
Whilst each chain can be swept across the whole of its frequency band, each chain has the
facility to create adjustable frequency windows which can be pre- programmed in width from
the Digital RF ‘RF CentrI ’ monitor and control software to target specific threats. Each
window can be turned ON/OFF. This information is stored in the internal processor unit for
future use.
Remote operation of the jammer is provided as standard via an Ethernet connection to a
central computer. ‘RF CentrI ’ can control all the features of each jammer remotely as well
as provide engineering control for adjusting frequency/level of each unit. An activity log of
each event is stored showing when a detector and/or jammer has been activated. The log
can be analyzed by the operators to assess the effectiveness of the security procedures and
areas of activity.
Selective windows can be enhanced giving a higher protection in certain bands by using the
‘Spectrum Enhancement Software’ facility. In this mode the enhanced window is swept
more times than the total frequency bands.