Radio Jammers are used to block radio signals. Radio Jammers like the VIP-300d work to defeat rcied threats by transmitting radio jamming electromagnetic energy through a series of antennas on many different frequencies.
 
Can Radio Jammers transmit and block all radio signals? Can Radio Jammers permit some signals while blocking others? The VIP-300d contains the Radio Jammers latest programmable feature for radio jamming upon command. When a bomb squad or bomb detection team enters an area that is suspected of containing an RCIED or remote controlled improvised explosive device, the Radio Jammers they use should be able to cover an area with radio jamming interference while permit some radio signals to flow unhindered. Not all Radio Jammers have the ability to open and close this type of communication window.

The VIP-300d is the choice that bomb squad and bomb detection teams require. When an EOD bomb detection team or bomb squad respond to a crises, the Radio Jammers they use will now offer more control over the transmitting of radio jamming energy as the VIP-300d is a digitally controlled and programmable modular Electronic Countermeasure System or ECM.  The BombJammer ™ VIP-300d uses sophisticated RF technology to transmit a digitally controlled Spot Jamming and / or Barrage Jamming technique. This method employs frequency hopping across a list of frequencies and frequency sub bands, which interferes with the operation of the radio controlled transmissions used to detonate bombs.