Jammer Antenna Shock-absorbing Drum Spring Omnidirectional Fiberglass Antenna This high-performance omnidirectional antenna features a shock-absorbing drum spring design, making it ideal for backpack countermeasure equipment and vehicle-mounted suitcase-type devices. Engineered for shock resistance and 360° communication coverage, it delivers reliable performance across multiple security and wireless communication scenarios. Key Features Construction: Shock-absorbing drum