JC-108-174

The JC-108-174 is a professional-grade, VHF Fiber Glass Jammer Collinear Antenna specifically engineered for the 108–174 MHz spectrum. This ruggedized aperture is optimized for neutralizing VHF triggers and disrupting tactical radio communications across the entire air-band and maritime VHF range. Featuring a high-strength fiberglass radome and a standardized NATO mounting interface, the JC-108-174 provides persistent electronic protection for military vehicles and fixed-site installations.

Design: Wide-Angle VHF Spectrum Dominance

The JC-108-174 is optimized for mission-critical Electronic Warfare (EW) hubs requiring a broad "denial bubble" in the lower frequency bands.

• Hemispherical Coverage: Boasting a wide 78-degree vertical beamwidth, this antenna ensures consistent signal saturation of the surrounding area, even when the vehicle is traversing uneven terrain or steep inclines.
• High-Power Capacity: Rated for 150 Watts of continuous-duty RF transmission, providing the necessary energy density to suppress modern VHF triggers and voice communications.
• Advanced Feed Architecture: Utilizes specialized co-axial stub and spark gap techniques to maintain a smooth VSWR and constant gain across the entire 66 MHz bandwidth without field tuning.

Construction: MIL-SPEC Environmental Hardening

Built for 24/7 survivability in the world’s most punishing theaters, from arctic freezes to desert combat.

• Ruggedized Fiber Glass Radome: The radiating core, consisting of vertically stacked brass elements, is fully protected by a 44 mm diameter fiberglass housing. This enclosure offers superior RF transparency and mechanical robustness against physical impact and UV radiation.
• Aerospace-Grade Materials: Constructed using high-class aluminum alloy for the support structure and all-brass internal radiators. The antenna is finished in Military Olive Green for a low visual signature.
• NATO Interface Ready: Equipped with a standard NATO 4-hole pattern base for rapid bolt-on installation on armored vehicles. Optional pole-mounting hardware is available for fixed-site base station applications.

EW, SIGINT & Monitoring Compatibility

• Electronic Warfare (EW): Primary defense against RCIED (Remote Controlled IED) triggers and high-power signal denial for tactical VHF radios and air-traffic control bands.
• Signals Intelligence (SIGINT): The clean noise floor and omni-directional pattern allow for the intercept of tactical voice comms and the monitoring of signal activity across the 108–174 MHz window.
• Theater Awareness: The 360-degree horizontal coverage ensures total situational dominance, acting as a persistent electronic "tripwire" for early warning systems.

Global Compliances & MIL-STD Hardening

The JC-108-174 is engineered for survivability in the most hostile environments:

• Thermal Tolerance: Operational from -30°C to +70°C, covering all global operational theaters.
• Wind Stability: Aerodynamic profile rated for structural integrity in winds up to 200 Km/Hr.
• Humidity Resilience: 0 to 95% RH rating for tropical and high-salinity maritime environments.

Key Advantages

• Unified VHF Solution: Broad 108–174 MHz coverage eliminates the need for multiple antennas for air-band and tactical VHF jamming.
• 78° Vertical Aperture: Provides superior signal saturation for ground-based and low-altitude targets regardless of platform orientation.
• Zero Maintenance: Factory-tuned architecture requires no periodic calibration or field adjustments.
• Weather-Shielded Termination: The N-Female connector is recessed at the bottom of the antenna for total environmental protection.

Key Applications

• RCIED Defeat: Mobile jamming to neutralize VHF triggers and protect tactical convoys.
• Tactical Comms Denial: Disruption of adversary VHF hand-held and vehicle-mounted radio networks.
• Air-Band Security: Protection of high-value assets from unauthorized air-traffic frequency use.
• Fixed Base Defense: Persistent electronic shield for forward operating bases (FOBs).