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Escort Car Convoy Signal Jammer
The Madoors USA ECJ-350W High Power Convoy Jammer is a vehicle-mounted, multi-channel IED jamming system engineered to protect escort convoys, VIP vehicles, military personnel transport, and security force vehicles against remotely triggered improvised explosive devices — creating a 360-degree secure bubble of RF jamming coverage around the jammer vehicle through military-grade broadband antennas radiating effectively in all directions simultaneously. Available in 200W, 300W, 350W, and 500W output power configurations with an effective jamming radius of 150 meters minimum, the ECJ-350W blocks the full spectrum of remote detonation frequencies — mobile phones, GSM, Thuraya and satellite phones, Wi-Fi, RF, VHF, UHF, radio, vehicle remotes, toy remotes, and door controls — while providing synthesized barrage jamming and programmable digital waveforming through a laptop GUI interface for mission-specific frequency targeting.
Quickly roof-mounted on any vehicle type, continuously charged from the vehicle electrical system, optionally solar-charged, and expandable with additional modules upon field deployment, the ECJ-350W is a universal, project-based system used by military forces, security forces, law enforcement officers, and VIP protection details worldwide. The internal RF jamming telemetry ensures even power distribution across all antenna elements, and the optimum cooling system with gas cooler connected to the vehicle provides reliable operation in desert climate conditions.
TECHNICAL SPECIFICATIONS
The ECJ-350W is built on a multi-channel jamming transmitter chassis — with each channel module configured to cover a specific sub-band of frequencies corresponding to confirmed IED trigger threats. The modular architecture allows additional frequency modules to be incorporated upon field deployment as threat intelligence identifies new or previously uncovered frequency threats, maintaining continuous protection relevance as adversary trigger technology evolves.
Output power is available in four configurations — 200W, 300W, 350W, and 500W — with the power level selected based on the required jamming radius, vehicle profile, and power supply capacity of each specific deployment scenario. The minimum effective jamming radius is 150 meters from the jammer vehicle — creating a 300-meter diameter secure bubble through which no covered-frequency RF signal can pass to activate a remotely triggered IED in the convoy's path or vicinity.
Internal RF jamming telemetry monitors and balances power distribution across all antenna elements in real time — ensuring consistent coverage across the full 360-degree antenna array without directional gaps or hotspots that could create unprotected corridors in the jamming envelope.
The optimum cooling system — incorporating a gas cooler connected to the vehicle cooling infrastructure — manages thermal output during sustained high-power jamming operation in desert climate conditions, maintaining system performance and component reliability at the ambient temperatures of the most demanding deployment environments.
Advanced control is provided through a laptop GUI interface — enabling synthesized barrage jamming mode for comprehensive full-spectrum coverage, programmable digital waveforming for mission-specific threat frequency targeting, communications notch programming to preserve selected friendly communication channels within the jammer vehicle's own operational frequency bands, and real-time mission adaptation as threat intelligence changes during the operation.
KEY FEATURES
360-Degree Secure Bubble — All-Direction Coverage
The ECJ-350W creates a complete 360-degree RF jamming bubble around the jammer vehicle through military-grade broadband antennas radiating effectively in all directions simultaneously. This omnidirectional coverage eliminates the directional vulnerability of single or dual-antenna systems that leave unprotected sectors in the jamming envelope — ensuring that no IED trigger signal can reach a remotely detonated device from any direction relative to the convoy.
Multi-Channel Modular Architecture — Threat-Specific Sub-Band Coverage
The multi-channel transmitter chassis uses separate modules for each sub-band of the threat frequency spectrum — with each module optimized for its specific frequency range rather than providing diluted power across the full spectrum from a single broadband transmitter. This modular approach delivers higher effective jamming power within each sub-band and allows the frequency coverage to be precisely matched to the confirmed threat frequency profile of the specific operational area.
200W to 500W Output — 150-Meter Minimum Radius
Four output power levels — 200W, 300W, 350W, and 500W — provide jamming radius flexibility from standard convoy protection through to maximum-coverage VIP and high-threat military transport scenarios. The 150-meter minimum effective radius at standard power levels creates a protective bubble extending well beyond the immediate vicinity of the convoy vehicles — covering IED placement zones on approach routes, bridge underpasses, roadside positions, and elevated placement points within the threat radius.
Full Frequency Coverage — IED Triggers, Mobile, Satellite, Wi-Fi & Remote Control
The ECJ-350W covers the complete spectrum of RF frequencies used by IED trigger systems and hostile communications — mobile phones and GSM networks used as IED triggers, Thuraya and satellite phone detonation systems, Wi-Fi and RF remote triggers, VHF and UHF radio detonators, vehicle and toy remote control frequencies used in improvised trigger systems, and door control frequencies used in sophisticated command-wire-free IED systems. This comprehensive frequency coverage ensures that no trigger technology within the covered spectrum can activate an IED in the convoy's protected zone.
Synthesized Barrage Jamming — Comprehensive Spectrum Coverage
The synthesized barrage jamming mode provides continuous, simultaneous jamming across all covered frequency bands — delivering maximum protection against all known and potential threat frequencies within the covered spectrum without requiring specific pre-knowledge of the IED trigger frequency in use. Barrage mode is the default operational configuration for maximum protection when the specific trigger frequency is unknown.
Programmable Digital Waveforming — Mission-Specific Frequency Targeting
The programmable digital waveforming capability allows the jammer to be configured for specific threat frequencies identified through intelligence — concentrating transmitted power on confirmed threat frequencies for maximum jamming effectiveness against known trigger systems while preserving power availability for other bands. Mission-specific waveform programming through the laptop GUI allows the ECJ-350W to be reconfigured between missions as threat intelligence is updated.
Communications Notch Programming — Friendly Channel Preservation
User-programmable communications notches allow specific friendly communication frequencies to be excluded from the jamming envelope — preserving the jammer vehicle crew's own radio communications, GPS navigation, and command and control connectivity within the notched channels while maintaining full jamming coverage across all remaining covered frequencies. This selective notching capability is essential for operational effectiveness — the convoy protection system must not deny the convoy's own communications while protecting against IED triggers.
Laptop GUI Interface — Real-Time Mission Control
The laptop GUI interface provides the user with real-time control of all jammer parameters — power output per channel, active frequency modules, communications notch configuration, barrage or targeted waveform selection, and system status monitoring. This interface allows mission parameters to be adjusted in real time as the operational situation evolves — increasing coverage in high-threat zones, opening communications notches for coordination calls, and reconfiguring frequency targets as intelligence updates are received during the mission.
Quick Roof Mounting — Universal Vehicle Compatibility
The ECJ-350W is quickly mounted on the roof of any vehicle type — passenger cars, SUVs, military trucks, armored vehicles, and escort vehicles — without requiring permanent vehicle modification or specialized installation equipment. This rapid mounting capability allows the jammer to be transferred between vehicles as convoy composition changes or reallocated to the highest-priority vehicle in a mixed fleet.
Vehicle Battery Charging — Uninterrupted Operation
The ECJ-350W charges continuously from the vehicle electrical system during operation — maintaining battery charge throughout the mission without requiring external charging stops. This continuous vehicle charging ensures uninterrupted jamming coverage for the full mission duration regardless of mission length. Optional solar charging is available for extended static deployment scenarios where vehicle engine operation is minimized.
Internal RF Telemetry — Even Power Distribution
Internal RF jamming telemetry continuously monitors transmitted power across all antenna elements and adjusts output to maintain even power distribution — ensuring that the 360-degree jamming envelope has consistent coverage without directional gaps or power imbalances that could create exploitable weak points in the protection bubble.
Gas Cooler — Desert Climate Operation
The gas cooler connected to the vehicle cooling system provides active thermal management for high-power sustained jamming in the elevated ambient temperatures of desert and hot-climate deployment environments — maintaining all system components within their operational temperature range during extended high-power operation in conditions where passive cooling would result in thermal shutdown.
REGULATORY NOTICE
The ECJ-350W convoy jammer system is published for informational purposes. Jammer systems are project-based systems — optimal configuration is determined by on-site frequency measurement in the deployment region using Madoors USA licensed measuring devices and antennas, ensuring that the system is precisely configured for the threat frequency profile and regulatory environment of the specific operational area. The ECJ-350W is designed and supplied for authorized military, security force, law enforcement, and government protection details operating under appropriate legal authority.
DEPLOYMENT SCENARIOS & USE CASES
Madoors USA ECJ-350W Escort Car Convoy Signal Jammers are deployed across the full range of military convoy, VIP protection, counter-terrorism, and security force operations requiring mobile IED jamming coverage.
- Military personnel transport convoy IED protection
- VIP and head of state motorcade electronic protection
- Security escort convoy IED jamming coverage
- Military logistics convoy IED protection through hostile territory
- Law enforcement counter-terrorism vehicle convoy protection
- Presidential and government official vehicle convoy protection
- Embassy and diplomatic convoy IED jamming
- Military patrol vehicle IED protection in active threat zones
- Border security vehicle convoy protection
- Critical infrastructure inspection vehicle convoy IED protection
- Counter-IED route clearance convoy support jamming
- Military exercise convoy IED protection training support
- Emergency response convoy protection in threat environments
- Special forces vehicle convoy IED protection
- Peacekeeping mission vehicle convoy IED jamming
- Category: Signal Jammers & GSM Blockers