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The RCIED (Radio Controlled Improvised Explosive Device ) is an electronically initiated explosive that uses a wireless detonation method consisting of a transmitter and a receiver. Examples include radios, cordless phones, key fobs, or any over-the-air technology that can transmit a RF signal to an electronic receiving unit. In this application, an RCIED transmitter sends a signal to the threat receiver which is modified to send an initiating signal to an explosive initiator (for example, electric blasting cap). Successful transmission and reception of the initiating RF signal will result in detonation of the RCIED. RCIEDs have been effectively used in many regions and conflicts including Israel, the Balkans, Chechnya, Afghanistan (Operation Enduring Freedom) and Iraq (Operation Iraqi Freedom).
RF Jammers or Bomb Jammers use RF jamming signals to defeat remote controlled improvised explosive devices or RCIEDs. The RF Jammer theory of operation is the same as an IED Jammer in that they both involve sending out RF Jamming signals to cause radio interference and attack the radio receiver of an improvised explosive device or IED and help prevent it from detonating. RF Jamming or IED Jamming of HF, VHF, UHF and Microwave radio frequencies enable the RF Jammer to reduce the risk of remote controlled improvised explosive devices from triggering.
RCIED/Bomb Defeat, consists of three basic components; Transmitters, Receivers, and RF Jammers.

1.    Transmitter:

  • Simple transmitters can operate on only a signal or limited range of frequencies with limited modulation or wave forms.

  • More complex transmitters are capable of being tuned to a variety of different frequencies. May be capable of transmitting a wide range of modulations or wave forms.

  • While an RCIED consists of a threat transmitter and a threat receiver, designation of high- and low-power threats evaluates the transmit signal of the threat transmitter. An RCIED designated as a low-power RCIED has a transmitter that emits signals measured at less than one watt.


2.    Receiver:

  • The receiving end of a communications channel from a transmitter; receiver communications link.

  • Tuned to specific frequencies and capable of interpreting the signal on those frequencies.

  • In an RCIED the receiver is modified to send an initiating signal to an explosive initiator.


3.    RF Jammer:

  • A jammer is a special transmitter that prevents a receiver from receiving a recognizable signal from the intended transmitter.

  • The jammer does this by transmitting on the same frequency as the target transmitter/receiver, but with higher power or specialized waveforms (techniques jamming). This action prevents the receiver from hearing or correctly interpreting the transmitter’s signal thus preventing the output signal being sent from the receiver to the IED initiator.

NDR RCIED/Bomb Defeat and Jamming Systems use two fundamental types of jammers: both Active and Reactive.

1.    Active Jamming:

  • Active jamming constantly transmits jamming signals on one or more frequencies or bandwidths programmed into the system (barrage jamming). Since each jammer is loaded with multiple programmed frequencies, it is able to defeat multiple threats simultaneously.

  • Active jamming can be effective against both high- and low-power RCIEDs; however, they are most commonly employed against low power threats.

  • Active jammers are programmed to continuously jam on pre-programmed frequencies. Active jammers can either spread available power across all programmed frequency bands (barrage jamming), or they can cycle power through programmed frequency bands (sweep jamming) at a revisit rate quick enough to deny service of the target.

  • In barrage jamming, when systems are programmed to jam all frequencies simultaneously, the available jamming power is shared over a desired frequency range. It is imperative that the system’s programming load considers the available power on each target, as reduced power on target may severely effect system effectiveness.

  • In sweep jamming, the power of the transmission is swept across the programmed frequency range. The sweep technique enables maximum watts per MHz; however, when it is moving in a sweep pattern with a cycle rate, it is possible for a signal to “sneak” in, during the time period that a frequency is not actively jammed.


2.    Reactive Jamming:

  • Reactive jamming utilizes detection technologies and algorithms to minimize radiated jamming signals.

  • Reactive jamming scans programmed frequency ranges or sets of individual frequencies to detect signal activity. When a potential threat is detected, the jammer processes the signal data and only then transmits a jamming signal against that perceived threat. This method of reactive jamming enables the system to focus more power on the targeted frequency.

  • Since increased power on a target normally provides more reliable suppression of the RCIED, reactive jamming is more effective in defeating high-power RCIEDs. However, as many RCIED transmission signals are at power levels below the resident EM environment, reactive jamming must be coupled with active jamming to provide full coverage against an array of high- and low-power RCIEDs.

  • Reactive jamming uses a receiver to scan a frequency range to detect signal activity. Upon detection of an active signal the jammer focuses its transmission power directly on the active signal’s frequency. This power-sharing technique allows the jammer to bring the maximum amount of power on target at any one time.

NDR RCIED/Bomb Defeat and Jamming Systems are not restricted to a single method of jamming and may integrate multiple and varying methods into a single system. A system that utilizes barrage jamming may actually vary the power on each target, based on the loaded mission profile. Likewise, a system utilizing a sweep technique may also incorporate an element of barrage jamming. In determining the appropriate mission profile for jamming, the operational planners will take into consideration the effectiveness of various techniques and the capabilities of the NDR RCIED/Bomb Defeat and Jamming System.
NDR is pleased to introduce our line of Radio Controlled Improvised Explosive Device (RCIED) Defeat/Jamming Systems which have been designed to provide the maximum capability to counter continuously changing threats from Radio Controlled Improvised Explosive Device. Radio Controlled Improvised Explosive Device (RCIED) Defeat Systems are the preferred RCIED solution of Coalition and Partner Nation combat forces engaged in the Global War on Terror.
The design of our RCIED Jamming Systems incorporates modular construction to provide ease of maintenance, and upgrade / expansion to meet future requirements.  
  • Agile architecture to counter evolving threats

  • Combat-Proven, Designed for rugged environments

  • Flexible updateable capability for maximum protection

  • Superior in-field logistic support, training and representative program available

  • Authorized Military, Law Enforcement, Government Agency Clients Only

*The above descriptions of our products and systems are published for informative purposes only. All Bomb Jamming devices are strictly regulated by the US Department of State in accordance with the guidelines in the International Traffic in Arms (ITAR) per title 22, Code of Federal Regulations (CFR), Parts 120-130. If you are outside the United States of America, an export license should be obtained.
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