Available to buy online (USD) — cards, PayPal & bank wire accepted.

The mainstream GN-JS04-S1 is a commercial-grade CRPA antenna and CRPA anti-jammer that adds two more elements for seven adaptive nulling directions and ≥110 dB rejection — the sweet spot for multi-threat environments where several interferers may be active at once. This anti-jamming antenna protects UAVs, autonomous systems, and critical infrastructure against high-power GNSS jamming and spoofing.

Key Specifications

Array	4-element CRPA
Nulling directions	3 (N-1 rule)
GNSS bands	GPS L1/L2/L5, GLONASS, BDS, Galileo
Single-interference rejection	≥110 dB
Protection	IP67
Operating temp	−40 °C ~ +70 °C
Weight	410 g
Interface	SMA / J30J

Built For

Multi-jammer environments
UAV / drone navigation
Maritime & offshore
Tactical communications

Integration & Drawings

CAD and three-view mechanical drawings are available on request for integration evaluation — drone OEMs and system integrators are welcome. Final mechanical release is provided after project confirmation.

Compliance & Intended Use

This product is a defensive signal-protection and positioning-integrity device intended for civil, industrial and perimeter-safety applications — including critical-infrastructure protection, anti-spoofing for navigation, and authorized search & rescue. It is not a weapon and is not designed to cause harm. All exports are handled in accordance with applicable national export-control regulations; restricted items require end-use certification. Procurement is subject to compliance review.

Ordering & Inquiries

This product is available to buy online in USD (cards, PayPal, and bank wire). For stock availability, bulk or volume pricing, lead times, or any questions about this product, please contact our team via WhatsApp, Telegram, or Message — we will confirm details and shipping.

UAV Protection

GN-JS04-S1 4-Element CRPA Antenna